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Hou N, Yang X, Wang W, Sardans J, Yin X, Jiang F, Song Z, Li Z, Tian J, Ding X, Zhou J, Tariq A, Peñuelas J. Mangrove wetland recovery enhances soil carbon sequestration capacity of soil aggregates and microbial network stability in southeastern China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 951:175586. [PMID: 39154998 DOI: 10.1016/j.scitotenv.2024.175586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 08/13/2024] [Accepted: 08/15/2024] [Indexed: 08/20/2024]
Abstract
Mangrove wetlands are highly productive ecosystems in tropical and subtropical coastal zones, play crucial roles in water purification, biodiversity maintenance, and carbon sequestration. Recent years have seen the implementation of pond return initiatives, which have facilitated the gradual recovery of mangrove areas in China. However, the implications of these initiatives for soil aggregate stability, microbial community structure, and network interactions remain unclear. This study assesses the impacts of converting ponds to mangroves-both in natural and artificially restored settings-on soil aggregate stability and microbial networks at typical mangrove restoration sites along China's southeastern coast. Our observations confirmed our hypothesis that pond-to-mangrove conversions resulted in an increase in the proportion of large aggregates (>0.25 mm), improved soil aggregate structural stability, and increased carbon sequestration. However, mangrove recovery led to a decrease in the abundance and diversity of soil fungi communities. In terms of co-occurrence networks, naturally restored mangrove wetlands exhibited more nodes and edges. The naturally recovered mangrove wetlands demonstrated a higher level of community symbiosis compared to those that were manually restored. Conversely, bacterial networks showed a different pattern, with significant shifts in key taxa related to carbon sequestration functions. For instance, the proportion of bacterial Desulfobacterota and fungi Basidiomycota in natural recovery mangrove increased by 15.03 % and 7.82 %, respectively, compared with that in aquaculture ponds. Soil fungi and bacteria communities, as well as carbon sequestration by aggregates, were all positively correlated with soil total carbon content (P < 0.05). Both bacterial and fungal communities contributed to soil aggregate stability. Our study highlights the complex relationships between soil microbial communities, aggregate stability, and the carbon cycle before and after land-use changes. These findings underscore the potential benefits of restoring mangrove wetlands, as such efforts can enhance carbon storage capacity and significantly contribute to climate change mitigation.
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Affiliation(s)
- Ning Hou
- Key Laboratory of Humid Subtropical Ecological-Geographical Processes, Ministry of Education, Fujian Normal University, Fuzhou, Fujian 350117, China
| | - Xiang Yang
- Key Laboratory of Humid Subtropical Ecological-Geographical Processes, Ministry of Education, Fujian Normal University, Fuzhou, Fujian 350117, China
| | - Weiqi Wang
- Key Laboratory of Humid Subtropical Ecological-Geographical Processes, Ministry of Education, Fujian Normal University, Fuzhou, Fujian 350117, China.
| | - Jordi Sardans
- CSIC, Global Ecology Unit, CREAF-CSIC-UAB, Bellaterra, 08193 Barcelona, Catalonia, Spain; CREAF, Cerdanyola del Vallès, 08193 Barcelona, Catalonia, Spain
| | - Xiaolei Yin
- Institute of Northeast Geography and Agroecology, Chinese Academy of Sciences, Changchun, Jilin 130102, China
| | - Fangzhi Jiang
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environment and Ecology, Jiangnan University, Wuxi 214122, China
| | - Zhaoliang Song
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300192, China
| | - Zimin Li
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
| | - Jianqing Tian
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Xueli Ding
- School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Jingyun Zhou
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300192, China
| | - Akash Tariq
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Josep Peñuelas
- CSIC, Global Ecology Unit, CREAF-CSIC-UAB, Bellaterra, 08193 Barcelona, Catalonia, Spain; CREAF, Cerdanyola del Vallès, 08193 Barcelona, Catalonia, Spain
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Wang Z, Wang G, Li Y, Zhang Z. Determinants of carbon sequestration in thinned forests. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 951:175540. [PMID: 39151612 DOI: 10.1016/j.scitotenv.2024.175540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 08/08/2024] [Accepted: 08/13/2024] [Indexed: 08/19/2024]
Abstract
Given global climate change and the projected increases in the greenhouse effect, enhancing the carbon storage capacity of forest ecosystems is especially critical. To fully realize the potential carbon sequestration, it is imperative to understand the drivers affecting carbon storage in forest ecosystems, particularly with disturbances that disrupt existing balance. In this study, we explored the effects of stem-only harvest at various thinning intensities on forest structure and carbon density in middle-aged natural secondary forests, located in the northern temperate zone. Carbon density included aboveground carbon density (ACD), soil organic carbon stocks (SOCD), and total carbon density (TCD), which was the sum of ACD and SOCD. We employed the random forest analysis method to identify significant variables influencing changes in carbon density. Structural equation modelling (SEM) was then used to determine the drivers of changes in forest carbon density. The results showed that moderate thinning (20 %-35 % trees removed), is an effective management practice for increasing the TCD in forests. Although heavy thinning (35.1 %-59.9 % trees removed) accelerated individual growth, it did not fully offset the carbon removed due to thinning. It is noteworthy that light thinning (0-19.9 % trees removed) not only reduced the species richness but also caused a significant number of tree deaths. Large live trees were an important direct determining factor of ACD, but not the only one. In addition, thinning indirectly influenced ACD by reducing canopy density and deformed tree density. The increase in dead tree density had an adverse impact on SOCD, and this phenomenon increased with the passage of recovery time. Conversely, greater thinning intensity enhanced SOCD. Moreover, TCD was directly influenced by tree height, large live trees, and stand density. Furthermore, thinning altered the conifer ratio, thereby influencing tree growth and indirectly controlling the TCD. We believe that this knowledge will be highly beneficial for successful forest management and enhancing the carbon sequestration capacity of forest ecosystems.
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Affiliation(s)
- Zichun Wang
- College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin 150040, China; Department of Forest Resources Management, University of British Columbia, Vancouver, Canada
| | - Guangyu Wang
- Department of Forest Resources Management, University of British Columbia, Vancouver, Canada
| | - Yaoxiang Li
- College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin 150040, China.
| | - Zheyu Zhang
- College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin 150040, China
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Feeney CJ, Bentley L, De Rosa D, Panagos P, Emmett BA, Thomas A, Robinson DA. Benchmarking soil organic carbon (SOC) concentration provides more robust soil health assessment than the SOC/clay ratio at European scale. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 951:175642. [PMID: 39163941 DOI: 10.1016/j.scitotenv.2024.175642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Revised: 07/19/2024] [Accepted: 08/17/2024] [Indexed: 08/22/2024]
Abstract
Increasing soil organic carbon (SOC) confers benefits to soil health, biodiversity, underpins carbon sequestration and ameliorates land degradation. One recommendation is to increase SOC such that the SOC to clay ratio (SOC/clay) exceeds 1/13, yet normalising SOC levels based on clay alone gives misleading indications of soil structure and the potential to store additional carbon. Building on work by Poeplau & Don (2023) to benchmark observed against predicted SOC, we advance an alternative indicator: the ratio between observed and "typical" SOC (O/T SOC) for pan-European application. Here, "typical" SOC is the average concentration in different pedo-climate zones, PCZs (which, unlike existing SOC indicators, incorporate land cover and climate, alongside soil texture) across Europe, determined from mineral (<20 % organic matter) topsoils (0-20 cm) sampled during 2009-2018 in LUCAS, Europe's largest soil monitoring scheme (n = 19,855). Regression tree modelling derived 12 PCZs, with typical SOC values ranging 5.99-39.65 g kg-1. New index classes for comparison with SOC/clay grades were established from the quartiles of each PCZ's O/T SOC distribution; these were termed: "Low" (below the 25th percentile), "Intermediate" (between the 25th and 50th percentiles), "High" (between the 50th and 75th percentiles), and "Very high" (above the 75th percentile). Compared with SOC/clay, O/T SOC was less sensitive to clay content, land cover, and climate, less geographically skewed, and better reflected differences in soil porosity and SOC stock, supporting 2 EU Soil Health Mission objectives (consolidating SOC stocks; improving soil structure for crops and biota). These patterns held for 2 independent datasets, and O/T SOC grades were sensitive enough to reflect land management differences across several long-term field experiments. O/T SOC used in conjunction with several other physical, chemical and biological soil health indicators can help support the EU Soil Monitoring Law and achieve several United Nations Sustainable Development Goals.
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Affiliation(s)
- Christopher J Feeney
- UK Centre for Ecology and Hydrology, Environment Centre Wales, Deiniol Road, Bangor, Gwynedd LL57 2UW, UK.
| | - Laura Bentley
- UK Centre for Ecology and Hydrology, Environment Centre Wales, Deiniol Road, Bangor, Gwynedd LL57 2UW, UK
| | - Daniele De Rosa
- School of Agriculture, Forestry, Food and Environmental Sciences, University of Basilicata, 85100 Potenza, Italy
| | - Panos Panagos
- European Commission - Joint Research Centre, Via Enrico Fermi, 2749, 21027 Ispra, VA, Italy
| | - Bridget A Emmett
- UK Centre for Ecology and Hydrology, Environment Centre Wales, Deiniol Road, Bangor, Gwynedd LL57 2UW, UK
| | - Amy Thomas
- UK Centre for Ecology and Hydrology, Environment Centre Wales, Deiniol Road, Bangor, Gwynedd LL57 2UW, UK
| | - David A Robinson
- UK Centre for Ecology and Hydrology, Environment Centre Wales, Deiniol Road, Bangor, Gwynedd LL57 2UW, UK
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Zeng J, Li X, Song R, Xie H, Li X, Liu W, Liu H, Du Y, Xu M, Ren C, Yang G, Han X. Mechanisms of litter input changes on soil organic carbon dynamics: a microbial carbon use efficiency-based perspective. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 949:175092. [PMID: 39079645 DOI: 10.1016/j.scitotenv.2024.175092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2024] [Revised: 07/23/2024] [Accepted: 07/25/2024] [Indexed: 08/03/2024]
Abstract
Plant litter is an important source of soil organic carbon (SOC) in terrestrial ecosystems, and the pattern of litter inputs is also influenced by global change and human activities. However, the current understanding of the impact of changes in litter inputs on SOC dynamics remains contentious, and the mechanisms by which changes in litter inputs affect SOC have rarely been investigated from the perspective of microbial carbon use efficiency (CUE). We conducted a 1-year experiment with litter treatments (no aboveground litter (NL), natural aboveground litter (CK), and double aboveground litter (DL)) in Robinia pseudoacacia plantation forest on the Loess Plateau. The objective was to assess how changes in litter input affect SOC accumulation in forest soils from the perspective of microbial CUE. Results showed that NL increased soil microbial C limitation by 77.11 % (0-10 cm) compared to CK, while it had a negligible effect on nitrogen and phosphorus limitation. In contrast, DL had no significant effect on soil microbial nutrient limitation. Furthermore, NL was found to significantly increase microbial CUE and decrease microbial metabolic quotient (QCO2), while the opposite was observed with DL. It is noteworthy that NL significantly contributed to an increase in SOC of 30.72 %, while DL had no significant effect on SOC. Correlation analysis showed that CUE was directly proportional to SOC and inversely proportional to QCO2. The partial least squares pathway model indicated that NL indirectly regulated the accumulation of SOC, mainly through two pathways: promoting microbial CUE increase and reducing QCO2. Overall, this study elucidates the mechanism and novel insights regarding SOC accumulation under changes in litter input from the perspective of microbial CUE. These findings are critical for further comprehension of soil carbon dynamics and the terrestrial C-cycle.
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Affiliation(s)
- Jia Zeng
- College of Agronomy, Northwest Agriculture & Forestry University, Yangling 712100, Shaanxi, PR China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling 712100, Shaanxi, PR China
| | - Xiangyang Li
- College of Agronomy, Northwest Agriculture & Forestry University, Yangling 712100, Shaanxi, PR China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling 712100, Shaanxi, PR China
| | - Rui Song
- College of Agronomy, Northwest Agriculture & Forestry University, Yangling 712100, Shaanxi, PR China
| | - Haoxuan Xie
- College of Agronomy, Northwest Agriculture & Forestry University, Yangling 712100, Shaanxi, PR China
| | - Xiangnan Li
- College of Agronomy, Northwest Agriculture & Forestry University, Yangling 712100, Shaanxi, PR China
| | - Weichao Liu
- College of Agronomy, Northwest Agriculture & Forestry University, Yangling 712100, Shaanxi, PR China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling 712100, Shaanxi, PR China
| | - Hanyu Liu
- College of Agronomy, Northwest Agriculture & Forestry University, Yangling 712100, Shaanxi, PR China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling 712100, Shaanxi, PR China
| | - Yaoyao Du
- College of Agronomy, Northwest Agriculture & Forestry University, Yangling 712100, Shaanxi, PR China
| | - Miaoping Xu
- Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, Shaanxi, PR China
| | - Chengjie Ren
- College of Agronomy, Northwest Agriculture & Forestry University, Yangling 712100, Shaanxi, PR China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling 712100, Shaanxi, PR China
| | - Gaihe Yang
- College of Agronomy, Northwest Agriculture & Forestry University, Yangling 712100, Shaanxi, PR China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling 712100, Shaanxi, PR China
| | - Xinhui Han
- College of Agronomy, Northwest Agriculture & Forestry University, Yangling 712100, Shaanxi, PR China.
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Qin H, Liu Y, Chen C, Chen A, Liang Y, Cornell CR, Guo X, Bai E, Hou H, Wang D, Zhang L, Wang J, Yao D, Wei X, Zhou J, Tan Z, Zhu B. Differential contribution of microbial and plant-derived organic matter to soil organic carbon sequestration over two decades of natural revegetation and cropping. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 949:174960. [PMID: 39089383 DOI: 10.1016/j.scitotenv.2024.174960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2024] [Revised: 07/16/2024] [Accepted: 07/20/2024] [Indexed: 08/04/2024]
Abstract
Both natural revegetation and cropping have great impact on long-term soil carbon (C) sequestration, yet the differences in their underlying mechanisms remain unclear. In this study, we investigated trends in soil organic C (SOC) accumulation during natural revegetation (VR) and cropping processes over 24 years, and explored the contributions of microbial necromass and plant-derived C to SOC formation and their primary controls. Over the course of 24 years of land use/cover change (LUCC) from 1995, SOC content exhibited a more substantial increase in VR (0.31 g kg-1 a-1) than in cropland (0.14 g kg-1 a-1) during Stage II (>10 y after LUCC), and recalcitrant organic carbon explained more of the SOC variation than easily oxidizable carbon. The higher SOC content in VR was attributed to a greater contribution of plant-derived C (14-28 %) than that in cropland (3-11 %) to SOC and a consistently lower ratio of cinnamyl (C)- to vanillyl (V)-type phenols in VR across all the assessed years. Although there were higher proportion of microbial necromass of SOC (41-84 %) in cropland than in VR, the differences were not significant. The dominant bacterial phylum of Chloroflexi and soil nitrogen content were the primary biotic and abiotic factors regulating microbial-derived and plant-derived C in both cropland and VR. However, soil phosphorus content was the main factor in cropland, while climatic factors such as mean annual precipitation were more important in VR. These results provided evidence that long-term natural revegetation enhanced SOC sequestration by greater contribution of plant-derived C to SOC formation compared to cropping. These findings underscore the synergistic contribution of vegetation and microorganisms to long-term SOC sequestration, offering insights into the different mechanisms of carbon formation during VR and cropping processes, and providing support for optimizing land management to achieve global carbon neutrality goals.
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Affiliation(s)
- Hongling Qin
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
| | - Yi Liu
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
| | - Chunlan Chen
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
| | - Anlei Chen
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
| | - Yuting Liang
- Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Carolyn R Cornell
- Department of Civil and Environmental Engineering, Rice University, Houston, TX, USA
| | - Xue Guo
- Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Edith Bai
- Key Laboratory of Geographical Processes and Ecological Security of Changbai Mountains, Ministry of Education, Northeast Normal University, Changchun 130024, China
| | - Haijun Hou
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
| | - Dou Wang
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
| | - Leyan Zhang
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
| | - Jingyuan Wang
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
| | - Dongliang Yao
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
| | - Xiaomeng Wei
- College of Resources and Environment, Northwest Agriculture and Forestry University, Yangling 712100, China
| | - Jizhong Zhou
- Institute for Environmental Genomics and Department of Microbiology and Plant Biology, University of Oklahoma, Norman, OK, USA
| | - Zhiliang Tan
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
| | - Baoli Zhu
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China.
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Mendes RG, do Valle Junior RF, Feitosa THS, de Melo Silva MMAP, Fernandes LFS, Pacheco FAL, Pissarra TCT, Lana RMQ, de Melo MC, Valera CA. Carbon footprints of tailings dams' disasters: A study in the Brumadinho region (Brazil). THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 949:175026. [PMID: 39097022 DOI: 10.1016/j.scitotenv.2024.175026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 07/22/2024] [Accepted: 07/23/2024] [Indexed: 08/05/2024]
Abstract
Tailings dams' breaks are environmental disasters with direct and intense degradation of soil. This study analyzed the impacts of B1 tailings dam rupture occurred in the Ribeirão Ferro-Carvão watershed (Brumadinho, Brazil) in January 25, 2019. Soil organic carbon (SOC) approached environmental degradation. The analysis encompassed wetlands (high-SOC pools) located in the so-called Zones of Decreasing Destructive Capacity (DCZ5 to DCZ1) defined along the Ferro-Carvão's stream bed and banks after the disaster. Remote sensed water indices were extracted from Landsat 8 and Sentinel-2 satellite images spanning the 2017-2021 period and used to distinguish the wetlands from other land covers. The annual SOC was extracted from the MapBiomas repository inside and outside the DCZs in the same period, and assessed in the field in 2023. Before the dam collapse, the DCZs maintained stable levels of SOC, while afterwards they decreased substantially reaching minimum values in 2023. The reductions were abrupt: for example, in the DCZ3 the decrease was from 51.28 ton/ha in 2017 to 4.19 ton/ha in 2023. Besides, the SOC increased from DCZs located near to DCZs located farther from the dam site, a result attributed to differences in the percentages of clay and silt in the tailings, which also increased in the same direction. The Ferro-Carvão stream watershed as whole also experienced a slight reduction in the average SOC levels after the dam collapse, from nearly 43 ton/ha in 2017 to 38 ton/ha in 2021. This result was attributed to land use changes related with the management of tailings, namely opening of accesses to remove them from the stream valley, creation of spaces for temporary deposits, among others. Overall, the study highlighted the footprints of tailings dams' accidents on SOC, which affect not only the areas impacted with the mudflow but systemically the surrounding watersheds. This is noteworthy.
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Affiliation(s)
- Rafaella Gouveia Mendes
- Federal Institute of Triângulo Mineiro (IFTM), Uberaba Campus, Geoprocessing Laboratory, Uberaba, MG 38064-790, Brazil
| | - Renato Farias do Valle Junior
- Federal Institute of Triângulo Mineiro (IFTM), Uberaba Campus, Geoprocessing Laboratory, Uberaba, MG 38064-790, Brazil.
| | | | | | - Luís Filipe Sanches Fernandes
- Center for Research and Agro-environmental and Biological Technologies (CITAB), University of Trás-os-Montes e Alto Douro, Ap. 1013, 5001-801 Vila Real, Portugal.
| | - Fernando António Leal Pacheco
- Center of Chemistry of Vila Real (CQVR), University of Trás-os-Montes e Alto Douro, Ap. 1013, 5001-801 Vila Real, Portugal.
| | - Teresa Cristina Tarlé Pissarra
- Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane, s/n, Jaboticabal, SP 14884-900, Brazil.
| | - Regina Maria Quintão Lana
- Programa de Pós Graduação Agronomia, Universidade Federal de Uberlândia, Uberlândia, MG 38400-902, Brazil
| | - Marília Carvalho de Melo
- Secretaria de Estado de Meio Ambiente e Desenvolvimento Sustentável, Cidade Administrativa do Estado de Minas Gerais, Rodovia João Paulo II, 4143, Bairro Serra Verde - Belo Horizonte, Minas Gerais, Brazil.
| | - Carlos Alberto Valera
- Coordenadoria Regional das Promotorias de Justiça do Meio Ambiente das Bacias dos Rios Paranaíba e Baixo Rio Grande, Rua Coronel Antônio Rios, 951, Uberaba, MG 38061-150, Brazil.
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Khaledi V, Baatz R, Antonijević D, Hoffmann M, Dietrich O, Lischeid G, Davies MF, Merz C, Nendel C. Evaluating MONICA's capability to simulate water, carbon and nitrogen fluxes in a wet grassland at contrasting water tables. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 949:174995. [PMID: 39053527 DOI: 10.1016/j.scitotenv.2024.174995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 07/16/2024] [Accepted: 07/21/2024] [Indexed: 07/27/2024]
Abstract
Wet grasslands, which are vital for water and nutrient regulation, are characterised by distinct water, carbon (C) and nitrogen (N) dynamics, and their interactions. Due to their shallow groundwater table, wet grasslands promote a strong interconnection between diverse vegetation and soil water. Researchers have investigated how wet grasslands respond to environmental changes, using various simulation models to understand how these sites contribute to water, C and N dynamics. However, a comprehensive, simultaneous study of all three of these dynamics is still lacking. This study makes use of a grassland lysimeter study with differently managed groundwater levels and employs the process-based MOdel for NItrogen and Carbon dynamics in Agroecosystems (MONICA) to simulate these dynamics. By using SPOTPY (Statistical Parameter Optimization Tool) to optimise the relevant parameters, we find that MONICA performs well in simulating vegetation growth (aboveground biomass), and elements of the water (evapotranspiration), C (gross primary productivity, ecosystem respiration) and N (N in aboveground biomass, nitrate in soil solution, Nitrous oxide emissions) balance, with Willmott's Refined Index of Agreement always larger than 0.35. This level of accuracy demonstrates that MONICA is ready to be applied for scenario simulations of groundwater management and climate change to evaluate their impact on greenhouse gas emissions and long-term carbon storage, as well as water and nitrogen losses in wet grasslands.
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Affiliation(s)
- Valeh Khaledi
- Leibniz Centre for Agricultural Landscape Research (ZALF), Eberswalder Str. 84, 15374 Müncheberg, Germany; Institute of Biochemistry and Biology, University of Potsdam, Am Mühlenberg 3, 14476 Potsdam, Germany.
| | - Roland Baatz
- Leibniz Centre for Agricultural Landscape Research (ZALF), Eberswalder Str. 84, 15374 Müncheberg, Germany
| | - Danica Antonijević
- Leibniz Centre for Agricultural Landscape Research (ZALF), Eberswalder Str. 84, 15374 Müncheberg, Germany
| | - Mathias Hoffmann
- Leibniz Centre for Agricultural Landscape Research (ZALF), Eberswalder Str. 84, 15374 Müncheberg, Germany
| | - Ottfried Dietrich
- Leibniz Centre for Agricultural Landscape Research (ZALF), Eberswalder Str. 84, 15374 Müncheberg, Germany
| | - Gunnar Lischeid
- Leibniz Centre for Agricultural Landscape Research (ZALF), Eberswalder Str. 84, 15374 Müncheberg, Germany; Institute of Environmental Science and Geography, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
| | - Mariel F Davies
- Leibniz Centre for Agricultural Landscape Research (ZALF), Eberswalder Str. 84, 15374 Müncheberg, Germany
| | - Christoph Merz
- Leibniz Centre for Agricultural Landscape Research (ZALF), Eberswalder Str. 84, 15374 Müncheberg, Germany
| | - Claas Nendel
- Leibniz Centre for Agricultural Landscape Research (ZALF), Eberswalder Str. 84, 15374 Müncheberg, Germany; Institute of Biochemistry and Biology, University of Potsdam, Am Mühlenberg 3, 14476 Potsdam, Germany; Global Change Research Institute, Czech Academy of Sciences, Bělidla 986/4a, 603 00 Brno, Czech Republic
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Xiong Y, Du Y, Liu M, Deng Y, Shi H, Gan Y, Wang Y. Revealing degradation pathways of soluble and dissolved organic matter in alluvial-lacustrine aquifer systems impacted by high levels of geogenic ammonium. WATER RESEARCH 2024; 264:122215. [PMID: 39154536 DOI: 10.1016/j.watres.2024.122215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 07/24/2024] [Accepted: 08/03/2024] [Indexed: 08/20/2024]
Abstract
The excessive presence of geogenic ammonium (NH4+) in groundwater poses a global environmental concern, commonly linked to the degradation of nitrogen-containing dissolved organic matter (DOM). However, there is a gap in systematic studies on the combination of soluble organic matter (SOM) in sediments and DOM in groundwater, with few indoor incubation experiments to validate their degradation pathways. This study utilized ultrahigh-resolution Fourier transform ion cyclotron resonance mass spectrometry to analyze the molecular characteristics of DOM and SOM in aquifer systems affected by geogenic NH4+. Subsequently, indoor incubation experiments spanning up to 140 d were conducted to verify the degradation pathways. The experimental results revealed a two-phase degradation process for both the DOM and SOM. The initial stage was characterized by the degradation of aliphatic compounds (ALC) with the production of polyphenols (PPE) and highly unsaturated compounds (HUC). The second stage was dominated by the degradation of PPE and HUC, accompanied by the re-consumption of some ALC, while more recalcitrant HUC persisted. Notably, the first stage of SOM degradation exceeded that of DOM degradation, indicating that SOM exhibited greater resistance to aging. This phenomenon may be attributed to a wider range of active enzymes in sediments, the rapid replenishment of SOM by organic matter in sediments, or the accelerated degradation of DOM. The experimental results aligned with the molecular characterization of DOM and SOM in actual aquifer systems. It is hypothesized that NH4+ produced through the direct mineralization of SOM may contribute more to the enrichment of NH4+ in groundwater than that produced through the mineralization of DOM. This study is the first to analyze DOM and SOM together in aquifer systems and validate their degradation pathways through incubation experiments, thereby providing novel insights into the enrichment of geogenic NH4+ in groundwater.
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Affiliation(s)
- Yaojin Xiong
- Key Laboratory of Groundwater Quality and Health (China University of Geosciences), Ministry of Education, Wuhan 430078, China; State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution, School of Environmental Studies, Wuhan 430078, China
| | - Yao Du
- Key Laboratory of Groundwater Quality and Health (China University of Geosciences), Ministry of Education, Wuhan 430078, China; State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution, School of Environmental Studies, Wuhan 430078, China.
| | - Meihui Liu
- Key Laboratory of Groundwater Quality and Health (China University of Geosciences), Ministry of Education, Wuhan 430078, China; State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution, School of Environmental Studies, Wuhan 430078, China
| | - Yamin Deng
- Key Laboratory of Groundwater Quality and Health (China University of Geosciences), Ministry of Education, Wuhan 430078, China; State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution, School of Environmental Studies, Wuhan 430078, China
| | - Huanhuan Shi
- Key Laboratory of Groundwater Quality and Health (China University of Geosciences), Ministry of Education, Wuhan 430078, China; State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution, School of Environmental Studies, Wuhan 430078, China
| | - Yiqun Gan
- Key Laboratory of Groundwater Quality and Health (China University of Geosciences), Ministry of Education, Wuhan 430078, China; State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution, School of Environmental Studies, Wuhan 430078, China
| | - Yanxin Wang
- Key Laboratory of Groundwater Quality and Health (China University of Geosciences), Ministry of Education, Wuhan 430078, China; State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution, School of Environmental Studies, Wuhan 430078, China
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9
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Ni H, Hu H, Zohner CM, Huang W, Chen J, Sun Y, Ding J, Zhou J, Yan X, Zhang J, Liang Y, Crowther TW. Effects of winter soil warming on crop biomass carbon loss from organic matter degradation. Nat Commun 2024; 15:8847. [PMID: 39397050 PMCID: PMC11471830 DOI: 10.1038/s41467-024-53216-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Accepted: 10/07/2024] [Indexed: 10/15/2024] Open
Abstract
Global warming poses an unprecedented threat to agroecosystems. Although temperature increases are more pronounced during winter than in other seasons, the impact of winter warming on crop biomass carbon has not been elucidated. Here we integrate global observational data with a decade-long field experiment to uncover a significant negative correlation between winter soil temperature and crop biomass carbon. For every degree Celsius increase in winter soil temperature, straw and grain biomass carbon decreased by 6.6 ( ± 1.7) g kg-1 and 10.2 ( ± 2.3) g kg-1, respectively. This decline is primarily attributed to the loss of soil organic matter and micronutrients induced by warming. Ignoring the adverse effects of winter warming on crop biomass carbon could result in an overestimation of total food production by 4% to 19% under future warming scenarios. Our research highlights the critical need to incorporate winter warming into agricultural productivity models for more effective climate adaptation strategies.
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Affiliation(s)
- Haowei Ni
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Han Hu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Constantin M Zohner
- Department of Environmental Systems Science, Institute of Integrative Biology, ETH, Zurich, Switzerland
| | - Weigen Huang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Ji Chen
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
- Department of Agroecology, Aarhus University, Tjele, Tjele, Denmark
- iCLIMATE Interdisciplinary Centre for Climate Change, Aarhus University, Roskilde, Denmark
| | - Yishen Sun
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jixian Ding
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Jizhong Zhou
- School of Biological Sciences, University of Oklahoma, Oklahoma, Oklahoma, USA
| | - Xiaoyuan Yan
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Jiabao Zhang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Yuting Liang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China.
| | - Thomas W Crowther
- Department of Environmental Systems Science, Institute of Integrative Biology, ETH, Zurich, Switzerland
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10
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Arrigo F, De Marchi L, Meucci V, Piccione G, Soares AMVM, Faggio C, Freitas R. Mytilus galloprovincialis: A valuable bioindicator species for understanding the effects of diclofenac under warming conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 946:173809. [PMID: 38848913 DOI: 10.1016/j.scitotenv.2024.173809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 06/02/2024] [Accepted: 06/04/2024] [Indexed: 06/09/2024]
Abstract
Drugs are chemical compounds used to treat and improve organic dysfunctions caused by diseases. These include analgesics, antibiotics, antidepressants, and antineoplastics. They can enter aquatic environments through wastewater streams, where their physico-chemical properties allow metabolites to distribute and accumulate. Current climate change and associated extreme weather events may significantly impact these substances' toxicity and aquatic organisms' sensitivity. Among the chemicals present in aquatic environments is the non-steroidal anti-inflammatory drug diclofenac (DIC), which the EU monitors due to its concentration levels. This study investigated the influence of temperature (control at 17 °C vs. 21 °C) on the effects of DIC (0 μg/L vs. 1 μg/L) in the mussel species Mytilus galloprovincialis. Significant results were observed between 17 and 21 °C. Organisms exposed to the higher temperature showed a decrease in several parameters, including metabolic capacity and detoxification, particularly with prolonged exposure. However, in some parameters, after 21 days, the M. galloprovincialis showed no differences from the control, indicating adaptation to the stress. The results of this study confirm that DIC concentrations in the environment, particularly when combined with increased temperatures, can produce oxidative stress and adversely affect M. galloprovincialis biochemical and physiological performance. This study also validates this species as a bioindicator for assessing environmental contamination with DIC. Beyond its direct impact on aquatic organisms, the presence of pharmaceuticals like DIC in the environment highlights the interconnectedness of human, animal, and ecosystem health, underscoring the One Health approach to understanding and mitigating environmental pollution.
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Affiliation(s)
- Federica Arrigo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 S. Agata-Messina, Italy
| | - Lucia De Marchi
- Veterinary Teaching Hospital, Department of Veterinary Sciences, University of Pisa, 56122 Pisa, Italy
| | - Valentina Meucci
- Veterinary Teaching Hospital, Department of Veterinary Sciences, University of Pisa, 56122 Pisa, Italy
| | - Giuseppe Piccione
- Department of Veterinary Sciences, University of Messina, Viale Giovanni Palatucci snc, 98168 Messina, Italy
| | - Amadeu M V M Soares
- Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Caterina Faggio
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 S. Agata-Messina, Italy; Department of Ecosustainable Marine Biotechnology, Stazione Zoologica Anton Dohrn, Naples, Italy
| | - Rosa Freitas
- Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
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11
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Yang S, Zhao X, Wang Q, Tian P. Greater influences of nitrogen addition on priming effect in forest subsoil than topsoil regardless of incubation warming. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 946:174308. [PMID: 38936708 DOI: 10.1016/j.scitotenv.2024.174308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 06/24/2024] [Accepted: 06/24/2024] [Indexed: 06/29/2024]
Abstract
Subsoil (below 20 cm), storing over 50 % of soil organics carbon (SOC) within the 1 m depth, plays a critical role in regulating climate and ecosystem function. However, little was known on the changes in SOC decomposition induced by exogenous C input (i.e., priming effect) across the whole soil profile under nitrogen (N) enrichment and climate warming. We designed an incubation system of soil columns with minor physical disturbance, which allows the manual additions of exogenous C and N and incubation under ambient or elevated temperature. A negative priming effect by glucose was observed in all layers of ambient soil, while the negative priming effect was enhanced by soil depth but inhibited by warming. Nitrogen addition shifted the priming effect from negative to positive under ambient temperature, and decreased the magnitude of negative priming effect under elevated temperature. Nitrogen uplift effect on priming effect was more pronounced in subsoil compared to topsoil, while this effect diminished with rising temperature. Soil microbial activity (e.g., the CO2 production within 3 days) and acid phosphatase activity had important roles in regulating the variations in priming effect across the soil profile. Our results indicated that increase in labile substrate (e.g., exogenous C input) input would not lead to native SOC destabilization in subsoil, N addition shifted the priming effect from negative to positive, increasing the SOC decomposition under ambient temperature, while labile C input together with N addition benefited SOC sequestration by inducing negative priming effects in forest soil under warming climate.
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Affiliation(s)
- Shaobo Yang
- Anhui Province Key Laboratory of Forest Resources and Silviculture, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei 230036, China
| | - Xuechao Zhao
- Anhui Province Key Laboratory of Forest Resources and Silviculture, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei 230036, China
| | - Qingkui Wang
- Anhui Province Key Laboratory of Forest Resources and Silviculture, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei 230036, China; Huitong Experimental Station of Forest Ecology, CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Shenyang 110016, China.
| | - Peng Tian
- Anhui Province Key Laboratory of Forest Resources and Silviculture, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei 230036, China.
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12
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Pei J, Fang C, Li B, Nie M, Li J. Direct Evidence for Microbial Regulation of the Temperature Sensitivity of Soil Carbon Decomposition. GLOBAL CHANGE BIOLOGY 2024; 30:e17523. [PMID: 39377428 DOI: 10.1111/gcb.17523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 08/26/2024] [Accepted: 09/07/2024] [Indexed: 10/09/2024]
Abstract
Soil physicochemical protection, substrates, and microorganisms are thought to modulate the temperature sensitivity of soil carbon decomposition (Q10), but their regulatory roles have yet to be distinguished because of the confounding effects of concurrent changes of them. Here, we sought to differentiate these effects through microorganism reciprocal transplant and aggregate disruption experiments using soils collected from seven sites along a 5000-km latitudinal transect encompassing a wide range of climatic conditions and from a 4-year laboratory incubation experiment. We found direct microbial regulation of Q10, with a higher Q10 being associated with greater fungal:bacterial ratios. However, no significant direct effects of physicochemical protection and substrate were observed on the variation in Q10 along the latitudinal transect or among different incubation time points. These findings highlight that we should move forward from physicochemical protection and substrate to microbial mechanisms regulating soil carbon decomposition temperature sensitivity to understand and better predict soil carbon-climate feedback.
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Affiliation(s)
- Junmin Pei
- Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Institute of Biodiversity Science and Institute of Eco-Chongming, School of Life Sciences, Fudan University, Shanghai, China
- College of Life Sciences, Shanghai Normal University, Shanghai, China
| | - Changming Fang
- Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Institute of Biodiversity Science and Institute of Eco-Chongming, School of Life Sciences, Fudan University, Shanghai, China
| | - Bo Li
- Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Institute of Biodiversity Science and Institute of Eco-Chongming, School of Life Sciences, Fudan University, Shanghai, China
- Ministry of Education Key Laboratory for Transboundary Ecosecurity of Southwest China, Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology and Centre for Invasion Biology, Institute of Biodiversity, School of Ecology and Environmental Science, Yunnan University, Kunming, Yunnan, China
| | - Ming Nie
- Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Institute of Biodiversity Science and Institute of Eco-Chongming, School of Life Sciences, Fudan University, Shanghai, China
| | - Jinquan Li
- Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Institute of Biodiversity Science and Institute of Eco-Chongming, School of Life Sciences, Fudan University, Shanghai, China
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13
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Hou N, Zeng Q, Wang W, Zheng Y, Sardans J, Xue K, Zeng F, Tariq A, Peñuelas J. Soil carbon pools and microbial network stability depletion associated with wetland conversion into aquaculture ponds in Southeast China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 954:176492. [PMID: 39362542 DOI: 10.1016/j.scitotenv.2024.176492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 09/20/2024] [Accepted: 09/22/2024] [Indexed: 10/05/2024]
Abstract
Wetlands, which are ecosystems with the highest soil surface carbon density, have been severely degraded and replaced by artificial reclamation for fish and shrimp ponds in recent years. This transformation is causing intricate shifts in soil carbon pools and microbial stability. In this study, we examined natural wetlands and reclaimed aquaculture ponds in Southeast China to analyze the structure and network stability of soil microbial communities following the reclamation of estuarine wetlands and to elucidate the microbial-mediated mechanisms for regulating soil organic carbon (SOC). The aquaculture ponds presented significantly less average SOC content than the natural wetlands (p < 0.05). ACE, Chao1, and Shannon's indices of bacteria and fungi were decreased in aquaculture ponds. Less numbers of nodes and edge links in the co-occurrence network of soil fungi and bacteria in aquaculture ponds. This suggests reduced correlation and stability within the microbial network of aquaculture ponds. Decomposers in soil fungi (e.g. Dung Saprotroph) reduced. Reduced proportions of key phyla Ascomycota, Basidiomycota and Rozellomycota in the soil fungal network. Reduced proportions of key phyla Proteobacteria, Chloroflexi and Desulfobacterota in the soil bacterial network. In conclusion, our results suggest that converting wetland paddocks to intensive aquaculture ponds results in carbon pool loss and reduces soil microbial network stability. The results highlight the importance of protecting or moderately restoring mangrove wetlands along the coast of southeastern China. It is also predicted that such measures may enhance the storage capacity of soil carbon pools and improve the stability of carbon sequestration by soil microorganisms, thus offering a potential solution for mitigating global climate change.
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Affiliation(s)
- Ning Hou
- Key Laboratory of Humid Subtropical Ecological-Geographical Processes, Ministry of Education, Fujian Normal University, Fuzhou, Fujian 350117, China
| | - Qingsong Zeng
- College of Life Science, Fujian Normal University, Fuzhou 350117, China
| | - Weiqi Wang
- Key Laboratory of Humid Subtropical Ecological-Geographical Processes, Ministry of Education, Fujian Normal University, Fuzhou, Fujian 350117, China.
| | - Yi Zheng
- College of Life Science, Fujian Normal University, Fuzhou 350117, China
| | - Jordi Sardans
- CSIC, Global Ecology Unit, CREAF-CSIC-UAB, Bellaterra, 08193 Barcelona, Catalonia, Spain
| | - Katherine Xue
- Sydney Institute of Agriculture, The University of Sydney, Sydney, NSW 2006, Australia
| | - Fanjiang Zeng
- Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Akash Tariq
- Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Josep Peñuelas
- CSIC, Global Ecology Unit, CREAF-CSIC-UAB, Bellaterra, 08193 Barcelona, Catalonia, Spain
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14
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Ye M, Zhang W, Zhao S, Zhang J, Li Y, Pan H, Jiang Z, Li J, Xie X. Coupled transformation pathways of iron minerals and natural organic matter related to iodine mobilization in alluvial-lacustrine aquifer. JOURNAL OF HAZARDOUS MATERIALS 2024; 480:135944. [PMID: 39332257 DOI: 10.1016/j.jhazmat.2024.135944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2024] [Revised: 09/14/2024] [Accepted: 09/22/2024] [Indexed: 09/29/2024]
Abstract
The complex of natural organic matter (NOM) and iron minerals in sediment is the main host and source of groundwater iodine. However, the transformation pathways of the complex remain unclear. The groundwater and sediment from the Hetao Basin were collected in this study to analyze multi-isotopes, NOM molecular characteristics, and iron mineral phases. The results showed that high-iodine groundwater was mainly observed in the discharge area, where biodegradation of NOM, sulfate reduction and methanogenesis occurred. Compared to the shallow clayey sediments, the confined sandy sediments had lower iodine content, a lower fraction of crystalline iron oxides, and a higher fraction of carbonate associated Fe(II) minerals, suggesting that the release of sediment iodine in the aquifer is related to the transformation of sediment Fe(III) hydroxides/oxides. Moreover, the molecular features of high-iodine groundwater NOM and sandy sediment NOM were characterized by a higher proportion of refractory compounds, suggesting that the reductive transformation of sediment Fe(III) hydroxides/oxides is fueled by degradable organic compounds. The microbial Fe-reducing and/or sulfate-reducing processes cause the enrichment of groundwater iodine in the form of iodide via the transformation of iodine species. These findings provide new insights into the genesis of high-iodine groundwater.
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Affiliation(s)
- Mingxia Ye
- MOE Key Laboratory of Groundwater Quality and Health, China University of Geosciences, Wuhan 430078, China; State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution & School of Environmental Studies, China University of Geosciences, Wuhan 430078, China
| | - Wenyi Zhang
- MOE Key Laboratory of Groundwater Quality and Health, China University of Geosciences, Wuhan 430078, China; State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution & School of Environmental Studies, China University of Geosciences, Wuhan 430078, China
| | - Shilin Zhao
- MOE Key Laboratory of Groundwater Quality and Health, China University of Geosciences, Wuhan 430078, China; State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution & School of Environmental Studies, China University of Geosciences, Wuhan 430078, China
| | - Jingxian Zhang
- MOE Key Laboratory of Groundwater Quality and Health, China University of Geosciences, Wuhan 430078, China; State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution & School of Environmental Studies, China University of Geosciences, Wuhan 430078, China
| | - Yanlong Li
- Geological Survey Academy of Inner Mongolia Autonomous Region, Huhhot 010020, China
| | - Hongjie Pan
- Geological Survey Academy of Inner Mongolia Autonomous Region, Huhhot 010020, China
| | - Zhou Jiang
- MOE Key Laboratory of Groundwater Quality and Health, China University of Geosciences, Wuhan 430078, China; State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution & School of Environmental Studies, China University of Geosciences, Wuhan 430078, China
| | - Junxia Li
- MOE Key Laboratory of Groundwater Quality and Health, China University of Geosciences, Wuhan 430078, China; State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution & School of Environmental Studies, China University of Geosciences, Wuhan 430078, China.
| | - Xianjun Xie
- MOE Key Laboratory of Groundwater Quality and Health, China University of Geosciences, Wuhan 430078, China; State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution & School of Environmental Studies, China University of Geosciences, Wuhan 430078, China
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15
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Foley MM, Stone BWG, Caro TA, Sokol NW, Koch BJ, Blazewicz SJ, Dijkstra P, Hayer M, Hofmockel K, Finley BK, Mack M, Marks J, Mau RL, Monsaint-Queeney V, Morrissey E, Propster J, Purcell A, Schwartz E, Pett-Ridge J, Fierer N, Hungate BA. Growth rate as a link between microbial diversity and soil biogeochemistry. Nat Ecol Evol 2024:10.1038/s41559-024-02520-7. [PMID: 39294403 DOI: 10.1038/s41559-024-02520-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 07/25/2024] [Indexed: 09/20/2024]
Abstract
Measuring the growth rate of a microorganism is a simple yet profound way to quantify its effect on the world. The absolute growth rate of a microbial population reflects rates of resource assimilation, biomass production and element transformation-some of the many ways in which organisms affect Earth's ecosystems and climate. Microbial fitness in the environment depends on the ability to reproduce quickly when conditions are favourable and adopt a survival physiology when conditions worsen, which cells coordinate by adjusting their relative growth rate. At the population level, relative growth rate is a sensitive metric of fitness, linking survival and reproduction to the ecology and evolution of populations. Techniques combining omics and stable isotope probing enable sensitive measurements of the growth rates of microbial assemblages and individual taxa in soil. Microbial ecologists can explore how the growth rates of taxa with known traits and evolutionary histories respond to changes in resource availability, environmental conditions and interactions with other organisms. We anticipate that quantitative and scalable data on the growth rates of soil microorganisms, coupled with measurements of biogeochemical fluxes, will allow scientists to test and refine ecological theory and advance process-based models of carbon flux, nutrient uptake and ecosystem productivity. Measurements of in situ microbial growth rates provide insights into the ecology of populations and can be used to quantitatively link microbial diversity to soil biogeochemistry.
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Affiliation(s)
- Megan M Foley
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, USA.
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA.
| | - Bram W G Stone
- Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Tristan A Caro
- Department of Geological Sciences, University of Colorado Boulder, Boulder, CO, USA
| | - Noah W Sokol
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, USA
| | - Benjamin J Koch
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, USA
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Steven J Blazewicz
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, USA
| | - Paul Dijkstra
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, USA
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Michaela Hayer
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, USA
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Kirsten Hofmockel
- Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Brianna K Finley
- Department of Ecology, Earth and Environmental Sciences Area, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Michelle Mack
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, USA
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Jane Marks
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, USA
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Rebecca L Mau
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, USA
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Victoria Monsaint-Queeney
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, USA
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Ember Morrissey
- Division of Plant and Soil Sciences, West Virginia University, Morgantown, WV, USA
| | - Jeffrey Propster
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, USA
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
- Department of Biology, New Mexico Highlands University, Las Vegas, NM, USA
| | - Alicia Purcell
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, USA
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
- Department of Biological Sciences, Texas Tech University, Lubbock, TX, USA
| | - Egbert Schwartz
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, USA
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Jennifer Pett-Ridge
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, USA
- Life & Environmental Sciences Department, University of California, Merced, Merced, CA, USA
| | - Noah Fierer
- Department of Ecology and Evolutionary Biology, University of Colorado Boulder, Boulder, CO, USA
- Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, USA
| | - Bruce A Hungate
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, USA
- Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
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16
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Li S, Fei Y, Wang C, Sun J, Liang J, Feng Y, Yang B, Wang M, Shi H, Chen S. Fe oxides simultaneously improve stability of Cd and carbon in paddy soil:The underlying influence at aggregate level. JOURNAL OF HAZARDOUS MATERIALS 2024; 477:135392. [PMID: 39094314 DOI: 10.1016/j.jhazmat.2024.135392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2024] [Revised: 07/01/2024] [Accepted: 07/30/2024] [Indexed: 08/04/2024]
Abstract
Iron (Fe) oxides have a strong adsorption affinity for Cd and organic carbon (SOC). However, under alternate wet-dry (IF) condition,the influences of Fe oxides on the speciation and disrtribution of Cd and SOC in soil aggregates are unkown. In the present study, soils untreated (S), removed (S-Fe) or added (S+Fe) Fe oxide soils were blended with cadmium chloride solution and cultivated for 56 days under different moisture management practices. Compared with the S-Fe soil, the IF treatment increased the contents of Fe oxide-bound SOC (Fe-OC) and Fe/Mn oxide-bound Cd (Fe/Mn-Cd) by 18.5-29.8-fold and 1.45-2.45-fold, repectively, in the S and S+Fe soils, corresponding to a 36 %-42 % increase in the recalcitrant C pool (RCP) and a 53 %-87 % decrease in the exchangeable Cd content. These results could be attributed to soil particle aggregation and Fe redistribution. Fe addition promoted the transfer of Cd/SOC accumulated in microaggregates to macroaggregates and increased the variable negative charge content in macroaggregates and the adsorption capacity of macroaggregates for Cd/SOC. More Cd/SOC accumulated in macroaggregates in Fe oxide-bound form, which reduced the risk of Cd migration and Cd availability and increased the physical protection of SOC. Therefore, Fe oxide has great potential to simultaneously reduce carbon emissions and cadmium toxicity in paddy soil.
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Affiliation(s)
- Shanshan Li
- Technical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing 100012, China
| | - Yang Fei
- Technical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing 100012, China
| | - Chen Wang
- Technical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing 100012, China
| | - Jiajun Sun
- Technical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing 100012, China
| | - Jiahui Liang
- Technical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing 100012, China
| | - Yao Feng
- Technical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing 100012, China
| | - Bing Yang
- Technical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing 100012, China
| | - Meng Wang
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Huading Shi
- Technical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing 100012, China.
| | - Shibao Chen
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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17
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Du C, Sang W, Abbas M, Xu C, Jiang Z, Ma Y, Shi J, Feng M, Ni L, Li S. The interaction mechanisms of algal organic matter (AOM) and various types and aging degrees of microplastics. JOURNAL OF HAZARDOUS MATERIALS 2024; 477:135273. [PMID: 39047561 DOI: 10.1016/j.jhazmat.2024.135273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Revised: 07/15/2024] [Accepted: 07/19/2024] [Indexed: 07/27/2024]
Abstract
Algal blooms can produce substantial amounts of algal organic matter (AOM). Microplastics (MPs) in aquatic environments inevitably interact with AOM. Meanwhile, the aging and type of MPs may increase the uncertainty surrounding interaction. This study focused on polyethylene (PE) and polylactic acid (PLA) to investigate their interaction with AOM before and after aging. The results shw that PLA has a stronger adsorption capacity for AOM than PE. Meanwhile, aging enhanced and weakened the adsorption of PE and PLA for AOM. Compared to unaged PE (UPE) and aged PLA (APLA), aged PE (APE) and unaged PLA (UPLA) more significantly promote the humification of AOM and alter its functional groups. 2D-IR-COS analysis reveals that the sequence of functional group changes in AOM interacting with MPs is influenced by the type and aging of MPs. After interacting with AOM, surface roughness increased for all MPs. FTIR and XPS analyses show that the addition of AOM accelerated the oxidation of MPs surfaces, especially for UPE and APLA, with oxygen content increasing by 9.32 % and 1 %. Aging enhances the interaction between PE and AOM, while weakening the interaction between PLA and AOM. These findings provide new insights into understanding the interplay between AOM and MPs.
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Affiliation(s)
- Cunhao Du
- College of Environment, Hohai University, 210098 Nanjing, China; Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, Hohai University, 210098 Nanjing, China
| | - Wenlu Sang
- College of Environment, Hohai University, 210098 Nanjing, China; Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, Hohai University, 210098 Nanjing, China
| | - Mohamed Abbas
- College of Environment, Hohai University, 210098 Nanjing, China; Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, Hohai University, 210098 Nanjing, China
| | - Chu Xu
- College of Environment, Hohai University, 210098 Nanjing, China; Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, Hohai University, 210098 Nanjing, China
| | - Zhiyun Jiang
- College of Environment, Hohai University, 210098 Nanjing, China; Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, Hohai University, 210098 Nanjing, China
| | - Yushen Ma
- College of Environment, Hohai University, 210098 Nanjing, China; Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, Hohai University, 210098 Nanjing, China
| | - Jiahui Shi
- College of Environment, Hohai University, 210098 Nanjing, China; Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, Hohai University, 210098 Nanjing, China
| | - Muyu Feng
- College of Environment, Hohai University, 210098 Nanjing, China; Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, Hohai University, 210098 Nanjing, China
| | - Lixiao Ni
- College of Environment, Hohai University, 210098 Nanjing, China; Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, Hohai University, 210098 Nanjing, China.
| | - Shiyin Li
- School of Environment, Nanjing Normal University, 210097 Nanjing, China.
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18
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He X, Abs E, Allison SD, Tao F, Huang Y, Manzoni S, Abramoff R, Bruni E, Bowring SPK, Chakrawal A, Ciais P, Elsgaard L, Friedlingstein P, Georgiou K, Hugelius G, Holm LB, Li W, Luo Y, Marmasse G, Nunan N, Qiu C, Sitch S, Wang YP, Goll DS. Emerging multiscale insights on microbial carbon use efficiency in the land carbon cycle. Nat Commun 2024; 15:8010. [PMID: 39271672 PMCID: PMC11399347 DOI: 10.1038/s41467-024-52160-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Accepted: 08/28/2024] [Indexed: 09/15/2024] Open
Abstract
Microbial carbon use efficiency (CUE) affects the fate and storage of carbon in terrestrial ecosystems, but its global importance remains uncertain. Accurately modeling and predicting CUE on a global scale is challenging due to inconsistencies in measurement techniques and the complex interactions of climatic, edaphic, and biological factors across scales. The link between microbial CUE and soil organic carbon relies on the stabilization of microbial necromass within soil aggregates or its association with minerals, necessitating an integration of microbial and stabilization processes in modeling approaches. In this perspective, we propose a comprehensive framework that integrates diverse data sources, ranging from genomic information to traditional soil carbon assessments, to refine carbon cycle models by incorporating variations in CUE, thereby enhancing our understanding of the microbial contribution to carbon cycling.
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Affiliation(s)
- Xianjin He
- Laboratoire des Sciences du Climat et de l'Environnement, IPSL-LSCE, CEA/CNRS/UVSQ, Orme des Merisiers, Gif sur Yvette, France
| | - Elsa Abs
- Laboratoire des Sciences du Climat et de l'Environnement, IPSL-LSCE, CEA/CNRS/UVSQ, Orme des Merisiers, Gif sur Yvette, France
| | - Steven D Allison
- Department of Ecology and Evolutionary Biology, University of California Irvine, Irvine, CA, USA
- Department of Earth System Science, University of California Irvine, Irvine, CA, USA
| | - Feng Tao
- Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, USA
| | - Yuanyuan Huang
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
| | - Stefano Manzoni
- Department of Physical Geography and Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden
| | | | - Elisa Bruni
- LG-ENS (Laboratoire de géologie) CNRS UMR 8538-Ecole normale supérieure, PSL University -IPSL, Paris, France
| | - Simon P K Bowring
- Laboratoire des Sciences du Climat et de l'Environnement, IPSL-LSCE, CEA/CNRS/UVSQ, Orme des Merisiers, Gif sur Yvette, France
| | - Arjun Chakrawal
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Philippe Ciais
- Laboratoire des Sciences du Climat et de l'Environnement, IPSL-LSCE, CEA/CNRS/UVSQ, Orme des Merisiers, Gif sur Yvette, France
| | - Lars Elsgaard
- Department of Agroecology, Aarhus University, AU Viborg, Tjele, Denmark
- iCLIMATE Interdisciplinary Centre for Climate Change, Aarhus University, Roskilde, Denmark
| | - Pierre Friedlingstein
- Faculty of Environment, Science and Economy, University of Exeter, Exeter, UK
- Laboratoire de Météorologie Dynamique, Institut Pierre-Simon Laplace, CNRS, École Normale Supérieure, Université PSL, Sorbonne Université, École Polytechnique, Paris, France
| | - Katerina Georgiou
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, USA
| | - Gustaf Hugelius
- Department of Physical Geography and Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden
| | - Lasse Busk Holm
- Department of Agroecology, Aarhus University, AU Viborg, Tjele, Denmark
| | - Wei Li
- Department of Earth System Science, Ministry of Education Key Laboratory for Earth System Modeling, Institute for Global Change Studies, Tsinghua University, Beijing, China
| | - Yiqi Luo
- Soil and Crop Sciences Section, School of Integrative Plant Science, Cornell University, Ithaca, NY, USA
| | - Gaëlle Marmasse
- Laboratoire des Sciences du Climat et de l'Environnement, IPSL-LSCE, CEA/CNRS/UVSQ, Orme des Merisiers, Gif sur Yvette, France
- Ecole Normale Supérieure de Lyon, Lyon, France
| | - Naoise Nunan
- Institute of Ecology and Environmental Sciences-Paris, Sorbonne Université, CNRS, IRD, INRA, P7, UPEC, Paris, France
- Department of Soil and Environment, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Chunjing Qiu
- Research Center for Global Change and Complex Ecosystems, East China Normal University, Shanghai, China
| | - Stephen Sitch
- Faculty of Environment, Science and Economy, University of Exeter, Exeter, UK
| | - Ying-Ping Wang
- CSIRO Environment, Private Bag 10, Commonwealth Scientific and Industrial Research Organization, Clayton South, VIC 3169, Australia
| | - Daniel S Goll
- Laboratoire des Sciences du Climat et de l'Environnement, IPSL-LSCE, CEA/CNRS/UVSQ, Orme des Merisiers, Gif sur Yvette, France.
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19
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Wang JL, Liu XY, Jiang PK, Yu QR, Xu QF. Half substitution of mineral N with fish protein hydrolysate enhancing microbial residue C and N storage and climate benefits under high straw residue return. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 370:122488. [PMID: 39270338 DOI: 10.1016/j.jenvman.2024.122488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2024] [Revised: 09/10/2024] [Accepted: 09/10/2024] [Indexed: 09/15/2024]
Abstract
The widespread utilization of straw return was a popular practice straw disposal for highly intensive agriculture in China, which has brought about some negative impacts such as less time for straw complete biodegradation, aggravation of greenhouse gas evolution, and lower efficient of carbon accumulation. It was urgent to find an eco-friendly N-rich organic fertilizer instead of mineral N as activator to solve the above problems and lead a carbon accumulation in long tern management. Besides, microbial necromass was considered as a crucial contributor to persistent soil carbon (C) and nitrogen (N) pool. How organic fertilizer activators influence microbial residue under different amount of crop residues input remained unclear. Thus, soils incorporating moderate and high rate of rice straw residue with additions of half and full of organic activators (fish protein hydrolysates vs. manure) were incubated for measuring carbon dioxide (CO2) and nitrous oxide (N2O) emission, microbial community and necromass. It was found that soil CO2 emission was rapidest during the first 13 days of straw decomposition but remained lowest in the treatments of 50% mineral N substituted by fish protein hydrolysate. There were that 81%-89% of total CO2 release and 59%-65% of total N2O emission occurred within 60 days of incubation period, and bacterial community and nitrate positively affected soil CO2 and N2O release respectively. Straw incorporation amount and organic activator application interactively influenced soil CO2 emission but not affected soil N2O emission. After 360 days of incubation, the difference of bacterial necromass was noticeable but fungal necromass remained almost unaltered across all treatments. All treatments showed generally comparable contribution of microbial necromass N to the total N pool. The treatment of 50% mineral N substituted by fish protein hydrolysate under high rate of straw input (HSF50) promoted the highest proportion of microbial necromass C in soil organic C because of alleviating N limitation for microorganisms. Finally, HSF50 was recommended as an eco-friendly strategy for enhancing microbial necromass C and N storage and climate benefits in agroecosystems.
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Affiliation(s)
- Jia Lin Wang
- College of Environment and Resources, College of Carbon Neutrality, Zhejiang A&F University, Hangzhou, 311300, China; The State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, 311300, China
| | - Xin Yu Liu
- College of Environment and Resources, College of Carbon Neutrality, Zhejiang A&F University, Hangzhou, 311300, China; The State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, 311300, China
| | - Pei Kun Jiang
- College of Environment and Resources, College of Carbon Neutrality, Zhejiang A&F University, Hangzhou, 311300, China; The State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, 311300, China
| | - Qiu Ran Yu
- College of Environment and Resources, College of Carbon Neutrality, Zhejiang A&F University, Hangzhou, 311300, China; The State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, 311300, China
| | - Qiu Fang Xu
- College of Environment and Resources, College of Carbon Neutrality, Zhejiang A&F University, Hangzhou, 311300, China; The State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, 311300, China.
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20
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Liu R, Yao Y, Chu Q, Wei D, Wang X, Zhang S. Enhanced soil microbial stability is associated with soil organic carbon storage under high-altitude forestation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 370:122462. [PMID: 39270342 DOI: 10.1016/j.jenvman.2024.122462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 09/02/2024] [Accepted: 09/07/2024] [Indexed: 09/15/2024]
Abstract
The potential of forestation to mitigate climate warming depends largely on whether it can improve terrestrial carbon (C) storage. Changes in soil microbial stability can cause ecosystem C fluctuations. Unfortunately, it remains unclear whether forestation alters soil microbial stability with cascading effects on C storage in high-altitude ecosystems. In this study, a total of 14 typical planted forests were selected on the Tibetan Plateau. We showed that high-altitude forestation, particularly with poplars, altered the microbial diversity and potentially improved the stability of soil microbial communities. These changes were associated with soil C accumulation and potentially positive feedback on soil organic C storage. Variations in the microbial community stability were mostly caused by changes in soil bulk density and dissolved organic C. Superior network stability was found in fungal community rather than bacterial community. Additionally, there were strong interactions between bacterial and fungal communities that influenced soil C storage. These findings contribute to understand the differences and relationships between bacteria and fungi in plantation soils. This work reveals the potential of high-altitude forestation to mitigate climate warming through insights into the microbial-mediated mechanisms responsible for soil C storage in high-altitude ecosystems.
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Affiliation(s)
- Ruixuan Liu
- Key Laboratory for Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China
| | - Yuan Yao
- Key Laboratory for Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China
| | - Qiwen Chu
- Key Laboratory for Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China
| | - Da Wei
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610299, China
| | - Xiaodan Wang
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610299, China
| | - Sheng Zhang
- Key Laboratory for Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China.
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21
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Mukherjee S, Lohani P, Ballav S, Mehta P, Sekar KC, Pundir S, Kumar K, Singh SP. Wet and dry spell induced changes in the soil CO 2 effluxes of Pine and Oak ecosystems of Central Himalaya: a comparative assessment for monsoon and winter seasons. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:913. [PMID: 39254782 DOI: 10.1007/s10661-024-13026-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 08/15/2024] [Indexed: 09/11/2024]
Abstract
Soil efflux of CO2 ( F CO 2 ) is known to be dependent on natural drying and rewetting of the soil. Although the central Indian Himalayan region is predominantly occupied with two ecosystems, i. e. Pine (Pinus roxburghii) and Oak (Quercus leucotrichophora), differences in their F CO 2 dynamics and responses of F CO 2 to varying wet and dry spells were hardly known. To address this knowledge gap, this study provides a comparative assessment of F CO 2 variability from Pine and Oak ecosystems of central Himalaya as a response to rainfall induced wet and dry spells of monsoon and winter seasons. The F CO 2 data presented in this study are collected for 242 days of 2021-22 that include monsoon and winter seasons from a Pine and an Oak sites. The mean F CO 2 s of Pine and Oak sites are found to be 3.95(± 0.02) and 3.61(± 0.01) μmol.m-2.s-1, respectively. We find that the winter reduction in the F CO 2 in comparison to monsoon at the Pine site (78%) is more substantial than at Oak site (64.6%). The cross wavelet spectra of F CO 2 and monsoon rainfall amount at the Oak site, unlike the Pine site, indicate a negative relationship. The rainfall spell duration and amount of monsoon wet spells are noted to have an inverse relationship with F CO 2 at both sites, although, increasing rainfall spell duration in winter is noted to increase F CO 2 at Pine and Oak sites. Similarly, increasing F CO 2 is observed with increasing dry spells of monsoon at both sites. Results of this study indicate that in comparison to Oak, F CO 2 variability at Pine ecosystem is primarily driven by abiotic factors wherein wet spell is a major determinant.
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Affiliation(s)
- Sandipan Mukherjee
- G. B. Pant National Institute of Himalayan Environment, Leh, 194101, Ladakh, India.
| | - Priyanka Lohani
- G. B. Pant National Institute of Himalayan Environment, Almora, 263643, Uttarakhand, India
- Graphic Era Deemed to be University, Dehradun, Uttarakhand, 248002, India
| | - Srabanti Ballav
- Indian Institute of Tropical Meteorology, Pashan, Pune, 411 008, India
| | - Pooja Mehta
- G. B. Pant National Institute of Himalayan Environment, Srinagar, Uttarakhand, 246 174, India
| | - K Chandra Sekar
- G. B. Pant National Institute of Himalayan Environment, Srinagar, Uttarakhand, 246 174, India
| | - Sumit Pundir
- Graphic Era Deemed to be University, Dehradun, Uttarakhand, 248002, India
| | - Kireet Kumar
- G. B. Pant National Institute of Himalayan Environment, Almora, 263643, Uttarakhand, India
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22
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Kaur R, Gupta S, Tripathi V, Bharadwaj A. Unravelling the secrets of soil microbiome and climate change for sustainable agroecosystems. Folia Microbiol (Praha) 2024:10.1007/s12223-024-01194-9. [PMID: 39249146 DOI: 10.1007/s12223-024-01194-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Accepted: 08/20/2024] [Indexed: 09/10/2024]
Abstract
The soil microbiota exhibits an important function in the ecosystem, and its response to climate change is of paramount importance for sustainable agroecosystems. The macronutrients, micronutrients, and additional constituents vital for the growth of plants are cycled biogeochemically under the regulation of the soil microbiome. Identifying and forecasting the effect of climate change on soil microbiomes and ecosystem services is the need of the hour to address one of the biggest global challenges of the present time. The impact of climate change on the structure and function of the soil microbiota is a major concern, explained by one or more sustainability factors around resilience, reluctance, and rework. However, the past research has revealed that microbial interventions have the potential to regenerate soils and improve crop resilience to climate change factors. The methods used therein include using soil microbes' innate capacity for carbon sequestration, rhizomediation, bio-fertilization, enzyme-mediated breakdown, phyto-stimulation, biocontrol of plant pathogens, antibiosis, inducing the antioxidative defense pathways, induced systemic resistance response (ISR), and releasing volatile organic compounds (VOCs) in the host plant. Microbial phytohormones have a major role in altering root shape in response to exposure to drought, salt, severe temperatures, and heavy metal toxicity and also have an impact on the metabolism of endogenous growth regulators in plant tissue. However, shelf life due to the short lifespan and storage time of microbial formulations is still a major challenge, and efforts should be made to evaluate their effectiveness in crop growth based on climate change. This review focuses on the influence of climate change on soil physico-chemical status, climate change adaptation by the soil microbiome, and its future implications.
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Affiliation(s)
- Rasanpreet Kaur
- Department of Biotechnology, IAH, GLA University, Mathura, India
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Saurabh Gupta
- Department of Biotechnology, IAH, GLA University, Mathura, India.
| | - Vishal Tripathi
- Department of Biotechnology, Graphic Era (Deemed to Be University), Dehradun, 248002, Uttarakhand, India.
| | - Alok Bharadwaj
- Department of Biotechnology, IAH, GLA University, Mathura, India
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23
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Yang X, Feng K, Wang S, Yuan MM, Peng X, He Q, Wang D, Shen W, Zhao B, Du X, Wang Y, Wang L, Cao D, Liu W, Wang J, Deng Y. Unveiling the deterministic dynamics of microbial meta-metabolism: a multi-omics investigation of anaerobic biodegradation. MICROBIOME 2024; 12:166. [PMID: 39244624 PMCID: PMC11380791 DOI: 10.1186/s40168-024-01890-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Accepted: 07/29/2024] [Indexed: 09/09/2024]
Abstract
BACKGROUND Microbial anaerobic metabolism is a key driver of biogeochemical cycles, influencing ecosystem function and health of both natural and engineered environments. However, the temporal dynamics of the intricate interactions between microorganisms and the organic metabolites are still poorly understood. Leveraging metagenomic and metabolomic approaches, we unveiled the principles governing microbial metabolism during a 96-day anaerobic bioreactor experiment. RESULTS During the turnover and assembly of metabolites, homogeneous selection was predominant, peaking at 84.05% on day 12. Consistent dynamic coordination between microbes and metabolites was observed regarding their composition and assembly processes. Our findings suggested that microbes drove deterministic metabolite turnover, leading to consistent molecular conversions across parallel reactors. Moreover, due to the more favorable thermodynamics of N-containing organic biotransformations, microbes preferentially carried out sequential degradations from N-containing to S-containing compounds. Similarly, the metabolic strategy of C18 lipid-like molecules could switch from synthesis to degradation due to nutrient exhaustion and thermodynamical disadvantage. This indicated that community biotransformation thermodynamics emerged as a key regulator of both catabolic and synthetic metabolisms, shaping metabolic strategy shifts at the community level. Furthermore, the co-occurrence network of microbes-metabolites was structured around microbial metabolic functions centered on methanogenesis, with CH4 as a network hub, connecting with 62.15% of total nodes as 1st and 2nd neighbors. Microbes aggregate molecules with different molecular traits and are modularized depending on their metabolic abilities. They established increasingly positive relationships with high-molecular-weight molecules, facilitating resource acquisition and energy utilization. This metabolic complementarity and substance exchange further underscored the cooperative nature of microbial interactions. CONCLUSIONS All results revealed three key rules governing microbial anaerobic degradation. These rules indicate that microbes adapt to environmental conditions according to their community-level metabolic trade-offs and synergistic metabolic functions, further driving the deterministic dynamics of molecular composition. This research offers valuable insights for enhancing the prediction and regulation of microbial activities and carbon flow in anaerobic environments. Video Abstract.
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Affiliation(s)
- Xingsheng Yang
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences (CAS), Beijing, 100085, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Kai Feng
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences (CAS), Beijing, 100085, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shang Wang
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences (CAS), Beijing, 100085, China
| | - Mengting Maggie Yuan
- Department of Environmental Science, Policy, and Management, University of California, Berkeley, CA, 94704, USA
| | - Xi Peng
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences (CAS), Beijing, 100085, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qing He
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences (CAS), Beijing, 100085, China
| | - Danrui Wang
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences (CAS), Beijing, 100085, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wenli Shen
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences (CAS), Beijing, 100085, China
| | - Bo Zhao
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences (CAS), Beijing, 100085, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiongfeng Du
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences (CAS), Beijing, 100085, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yingcheng Wang
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences (CAS), Beijing, 100085, China
| | - Linlin Wang
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences (CAS), Beijing, 100085, China
| | - Dong Cao
- University of Chinese Academy of Sciences, Beijing, 100049, China
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Wenzong Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, China
| | - Jianjun Wang
- University of Chinese Academy of Sciences, Beijing, 100049, China
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academic of Sciences, Nanjing, 210008, China
| | - Ye Deng
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences (CAS), Beijing, 100085, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
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24
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Liu Y, Chen X, Leng Y, Wang S, Liu H, Zhang W, Li W, Li N, Ning Z, Gao W, Fan C, Wu X, Zhang M, Li Q, Chen M. Molecular-level insight into the effect of fertilization regimes on the chemodiversity of dissolved organic matter in tropical cropland. ENVIRONMENTAL RESEARCH 2024; 262:119903. [PMID: 39245311 DOI: 10.1016/j.envres.2024.119903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 08/26/2024] [Accepted: 08/30/2024] [Indexed: 09/10/2024]
Abstract
Fertilization is a critical agronomic measure for croplands in tropical regions, owing to their low fertility. However, the effects of fertilization on the quantity and chemodiversity of latosolic dissolved organic matter (DOM) in tropical regions remain largely unknown. Therefore, in this study, the variations in latosol DOM concentrations and chemodiversity induced by inorganic fertilization and the co-application of inorganic fertilization with straw return, sheep manure, biochar, and vermicompost fertilizers at a molecular level were systematically investigated using multispectral techniques and ultrahigh-resolution mass spectrometry. In line with our expectations, the results showed that combined inorganic-organic fertilization improved soil quality by increasing soil organic carbon content compared to that under inorganic fertilization. However, as the most active and bioavailable organic carbon pool, dissolved organic carbonconcentrations between the fertilization treatments were not significantly different (p = 0.07). However, the dissolved organic carbon concentrations under combined inorganic-organic fertilization treatment (NPK plus straw return, 263.45 ± 37.51 mg/kg) were lower than those under inorganic fertilization treatment (282.10 ± 18.57 mg/kg). Spectral analysis showed that the DOM in the combined inorganic-organic fertilization treatments had a higher degree of humification and lower autogenetic contributions. Furthermore, Fourier transform ion cyclotron resonance mass spectrometry analysis indicated that the combined inorganic-organic fertilization increased the chemodiversity of latosolic DOM and promoted the production of large, oxidized, and stable molecules, including lignin, aromatic, and tannin compounds, which potentially benefits soil carbon sequestration in tropical regions. This study could provide a theoretical basis for elucidating on the potentially relevant ecological functions and environmental effects of DOM under fertilization regimes.
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Affiliation(s)
- Yuqin Liu
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Low-carbon Green Agriculture in Tropical Region of China, Ministry of Agriculture and Rural Affairs, PR China, Haikou, 571101, China; Hainan Danzhou Tropical Agro-ecosystem National Observation and Research Station, Danzhou, 571737, China; Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Haikou, 571101, China; National Agricultural Experimental Station for Agricultural Environment, National Long-term Experimental Station for Agriculture Green Development, Danzhou, 571737, Hainan, China; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Xin Chen
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Low-carbon Green Agriculture in Tropical Region of China, Ministry of Agriculture and Rural Affairs, PR China, Haikou, 571101, China; Hainan Danzhou Tropical Agro-ecosystem National Observation and Research Station, Danzhou, 571737, China; Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Haikou, 571101, China; National Agricultural Experimental Station for Agricultural Environment, National Long-term Experimental Station for Agriculture Green Development, Danzhou, 571737, Hainan, China
| | - Youfeng Leng
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Low-carbon Green Agriculture in Tropical Region of China, Ministry of Agriculture and Rural Affairs, PR China, Haikou, 571101, China; Hainan Danzhou Tropical Agro-ecosystem National Observation and Research Station, Danzhou, 571737, China; Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Haikou, 571101, China; National Agricultural Experimental Station for Agricultural Environment, National Long-term Experimental Station for Agriculture Green Development, Danzhou, 571737, Hainan, China
| | - Shuchang Wang
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Low-carbon Green Agriculture in Tropical Region of China, Ministry of Agriculture and Rural Affairs, PR China, Haikou, 571101, China; Hainan Danzhou Tropical Agro-ecosystem National Observation and Research Station, Danzhou, 571737, China; Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Haikou, 571101, China; National Agricultural Experimental Station for Agricultural Environment, National Long-term Experimental Station for Agriculture Green Development, Danzhou, 571737, Hainan, China
| | - Huiran Liu
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Low-carbon Green Agriculture in Tropical Region of China, Ministry of Agriculture and Rural Affairs, PR China, Haikou, 571101, China; Hainan Danzhou Tropical Agro-ecosystem National Observation and Research Station, Danzhou, 571737, China; Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Haikou, 571101, China; National Agricultural Experimental Station for Agricultural Environment, National Long-term Experimental Station for Agriculture Green Development, Danzhou, 571737, Hainan, China
| | - Wen Zhang
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Low-carbon Green Agriculture in Tropical Region of China, Ministry of Agriculture and Rural Affairs, PR China, Haikou, 571101, China; Hainan Danzhou Tropical Agro-ecosystem National Observation and Research Station, Danzhou, 571737, China; Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Haikou, 571101, China; National Agricultural Experimental Station for Agricultural Environment, National Long-term Experimental Station for Agriculture Green Development, Danzhou, 571737, Hainan, China
| | - Wei Li
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Low-carbon Green Agriculture in Tropical Region of China, Ministry of Agriculture and Rural Affairs, PR China, Haikou, 571101, China; Hainan Danzhou Tropical Agro-ecosystem National Observation and Research Station, Danzhou, 571737, China; Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Haikou, 571101, China; National Agricultural Experimental Station for Agricultural Environment, National Long-term Experimental Station for Agriculture Green Development, Danzhou, 571737, Hainan, China
| | - Ning Li
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Low-carbon Green Agriculture in Tropical Region of China, Ministry of Agriculture and Rural Affairs, PR China, Haikou, 571101, China; Hainan Danzhou Tropical Agro-ecosystem National Observation and Research Station, Danzhou, 571737, China; Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Haikou, 571101, China; National Agricultural Experimental Station for Agricultural Environment, National Long-term Experimental Station for Agriculture Green Development, Danzhou, 571737, Hainan, China
| | - Ziyu Ning
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Low-carbon Green Agriculture in Tropical Region of China, Ministry of Agriculture and Rural Affairs, PR China, Haikou, 571101, China; Hainan Danzhou Tropical Agro-ecosystem National Observation and Research Station, Danzhou, 571737, China; Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Haikou, 571101, China; National Agricultural Experimental Station for Agricultural Environment, National Long-term Experimental Station for Agriculture Green Development, Danzhou, 571737, Hainan, China
| | - Wenlong Gao
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Low-carbon Green Agriculture in Tropical Region of China, Ministry of Agriculture and Rural Affairs, PR China, Haikou, 571101, China; Hainan Danzhou Tropical Agro-ecosystem National Observation and Research Station, Danzhou, 571737, China; Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Haikou, 571101, China; National Agricultural Experimental Station for Agricultural Environment, National Long-term Experimental Station for Agriculture Green Development, Danzhou, 571737, Hainan, China
| | - Changhua Fan
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Low-carbon Green Agriculture in Tropical Region of China, Ministry of Agriculture and Rural Affairs, PR China, Haikou, 571101, China; Hainan Danzhou Tropical Agro-ecosystem National Observation and Research Station, Danzhou, 571737, China; Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Haikou, 571101, China; National Agricultural Experimental Station for Agricultural Environment, National Long-term Experimental Station for Agriculture Green Development, Danzhou, 571737, Hainan, China
| | - Xiaolong Wu
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Low-carbon Green Agriculture in Tropical Region of China, Ministry of Agriculture and Rural Affairs, PR China, Haikou, 571101, China; Hainan Danzhou Tropical Agro-ecosystem National Observation and Research Station, Danzhou, 571737, China; Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Haikou, 571101, China; National Agricultural Experimental Station for Agricultural Environment, National Long-term Experimental Station for Agriculture Green Development, Danzhou, 571737, Hainan, China
| | - Meng Zhang
- School of Electronic and Information Engineering, Beihang University, Beijing, 100191, China
| | - Qinfen Li
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Low-carbon Green Agriculture in Tropical Region of China, Ministry of Agriculture and Rural Affairs, PR China, Haikou, 571101, China; Hainan Danzhou Tropical Agro-ecosystem National Observation and Research Station, Danzhou, 571737, China; Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Haikou, 571101, China; National Agricultural Experimental Station for Agricultural Environment, National Long-term Experimental Station for Agriculture Green Development, Danzhou, 571737, Hainan, China
| | - Miao Chen
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Key Laboratory of Low-carbon Green Agriculture in Tropical Region of China, Ministry of Agriculture and Rural Affairs, PR China, Haikou, 571101, China; Hainan Danzhou Tropical Agro-ecosystem National Observation and Research Station, Danzhou, 571737, China; Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Haikou, 571101, China; National Agricultural Experimental Station for Agricultural Environment, National Long-term Experimental Station for Agriculture Green Development, Danzhou, 571737, Hainan, China.
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25
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Niron H, Vienne A, Frings P, Poetra R, Vicca S. Exploring the synergy of enhanced weathering and Bacillus subtilis: A promising strategy for sustainable agriculture. GLOBAL CHANGE BIOLOGY 2024; 30:e17511. [PMID: 39295254 DOI: 10.1111/gcb.17511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2024] [Revised: 09/04/2024] [Accepted: 09/05/2024] [Indexed: 09/21/2024]
Abstract
Climate change is one of the most urgent environmental challenges that humanity faces. In addition to the reduction of greenhouse gas emissions, safe and robust carbon dioxide removal (CDR) technologies that capture atmospheric CO2 and ensure long-term sequestration are required. Among CDR technologies, enhanced silicate weathering (ESW) has been suggested as a promising option. While ESW has been demonstrated to depend strongly on pH, water, and temperature, recent studies suggest that biota may accelerate mineral weathering rates. Bacillus subtilis is a plant growth-promoting rhizobacterium that can facilitate weathering to obtain mineral nutrients. It is a promising agricultural biofertilizer, as it helps plants acquire nutrients and protects them from environmental stresses. Given that croplands are optimal implementation fields for ESW, any synergy between ESW and B. subtilis can hold great potential for further practice. B. subtilis was reported to enhance weathering under laboratory conditions, but there is a lack of data for soil applications. In a soil-mesocosm experiment, we examined the effect of B. subtilis on basalt weathering. B. subtilis-basalt interaction stimulated basalt weathering and increased soil extractable Fe. The combined application displayed higher CDR potential compared to basalt-only application (3.7 vs. 2.3 tons CO2 ha-1) taking solid and liquid cation pools into account. However, the cumulative CO2 efflux decreased by approximately 2 tons CO2 ha-1 with basalt-only treatment, while the combined application did not affect the CO2 efflux. We found limited mobilization of cations to the liquid phase as most were retained in the soil. Additionally, we found substantial mobilization of basalt-originated Mg, Fe, and Al to oxide- and organic-bound soil fractions. We, therefore, conclude that basalt addition showed relatively low inorganic CDR potential but a high capacity for SOM stabilization. The outcomes indicated the importance of weathering rate-GHG emission integration and the high potential of SOM stabilization in ESW studies.
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Affiliation(s)
- Harun Niron
- Biobased Sustainability Engineering (SUSTAIN), Department of Bioscience Engineering, University of Antwerp, Antwerp, Belgium
| | - Arthur Vienne
- Biobased Sustainability Engineering (SUSTAIN), Department of Bioscience Engineering, University of Antwerp, Antwerp, Belgium
| | - Patrick Frings
- GFZ German Research Centre for Geosciences, Potsdam, Germany
| | - Reinaldy Poetra
- Institute for Geology, Centre for Earth System Research and Sustainability, University of Hamburg, Hamburg, Germany
| | - Sara Vicca
- Biobased Sustainability Engineering (SUSTAIN), Department of Bioscience Engineering, University of Antwerp, Antwerp, Belgium
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26
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Longeard P, Santonja M, Morandini F, Gibernau M, Nadarajah S, Belliard P, Feignier N, Massaiu A, Andrei-Ruiz MC, Ferrat L. Combinative effects of thinning and prescribed burning on fuel reduction and soil arthropods: A case study in a Mediterranean pine forest. Ecol Evol 2024; 14:e70141. [PMID: 39279802 PMCID: PMC11393768 DOI: 10.1002/ece3.70141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 06/28/2024] [Accepted: 07/24/2024] [Indexed: 09/18/2024] Open
Abstract
Wildfire pressure involves today to implement silvicultural practices that provide a good compromise between reducing fire risk and maintaining ecological functioning. Thinning reduces tree density and low branches, but results in the deposition of a considerable biomass of woody debris on the ground (up to 4800 g m2 in this study). They can be eliminated by prescribed burning, but this raises questions about the fire intensity that can be generated and the impact on soil fauna. We undertook the monitoring of a thinning and prescribed burning operation, separated and combined, in November 2020, in a Pinus laricio stand prone to fire risk, located in Bavella, Corsica. Fuel load was determined, and temperature measurements in the soil were performed using K-type thermocouples. Soil arthropod populations were monitored using pitfall traps, in particular Collembola, Acari, Aranae, and Coleoptera. The combination of thinning and burning resulted in a fire intensity of 75.8 versus 8.4 kW m-1 for burning alone. Maximum temperature rise measured at -2 cm below the surface was less than 5°C for both treatments. The combination of thinning and burning did not result in higher fire intensity at ground level than burning alone, and the soil showed high insulation capacity. Most of the woody debris that burned was small-diameter, and large-diameter debris remained unconsumed. This burning, performed during a period of low biological activity, had no effect on soil arthropods, and the presence of large debris may have provided refuge areas. Collembola group was the faster to recover, and were followed by cohorts of predators in summer, especially Acari. Our results suggest that a combination of burning and thinning in autumn may be beneficial for fire prevention. However, the decomposition of woody debris in relation to fire risk, and the occurrence of pests after these treatments need to be monitored.
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Affiliation(s)
- Pauline Longeard
- UMR CNRS 6134, Sciences Pour l'Environnement University of Corsica Corte France
| | - Mathieu Santonja
- Aix Marseille Univ, Avignon Univ, CNRS, IRD, IMBE Marseille France
| | - Fréderic Morandini
- UMR CNRS 6134, Sciences Pour l'Environnement University of Corsica Corte France
| | - Marc Gibernau
- UMR CNRS 6134, Sciences Pour l'Environnement University of Corsica Corte France
| | | | - Pauline Belliard
- UMR CNRS 6134, Sciences Pour l'Environnement University of Corsica Corte France
| | - Nathalie Feignier
- UMR CNRS 6134, Sciences Pour l'Environnement University of Corsica Corte France
| | - Antonella Massaiu
- Office National Des Forêts - Unité DFCI Sainte-Lucie de Porto-Vecchio France
| | - Marie-Cécile Andrei-Ruiz
- Office de l'Environnement de la Corse - Observatoire, Conservatoire Des Insectes de Corse Corte France
| | - Lila Ferrat
- UMR CNRS 6134, Sciences Pour l'Environnement University of Corsica Corte France
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27
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Shen Z, Han T, Huang J, Li J, Daba NA, Gilbert N, Khan MN, Shah A, Zhang H. Soil organic carbon regulation by pH in acidic red soil subjected to long-term liming and straw incorporation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 367:122063. [PMID: 39098074 DOI: 10.1016/j.jenvman.2024.122063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 04/24/2024] [Accepted: 07/30/2024] [Indexed: 08/06/2024]
Abstract
The manipulation of soil pH through liming and straw incorporation plays a pivotal role in influencing soil organic carbon (SOC) dynamics in acidic red soil. This study aimed to assess the impact of these practices on SOC and elucidate the relationship between SOC and pH. Over a 31-year field experiment, seven different fertilization treatments were implemented: unfertilized (CK), nitrogen and potassium fertilizers (NK), NK with lime (NKCa), nitrogen, phosphorous, and potassium fertilizers (NPK), NPK with lime (NPKCa), NPK with straw (NPKS), and NPKS with lime (NPKSCa). Results revealed that liming and straw incorporation significantly elevated soil pH by 0.13-0.73 units. Lime application boosted SOC and mineral-associated organic carbon (MAOC) by 20.2% and 28.7%, respectively, in NK treatment, whereas its impact on SOC in NPK and NPKS treatments were negligible. SOC witnessed a 17.1% increase with NPKS and a 15.2% increase with NPKSCa compared to NPK alone. Notably, NPKS and NPKSCa led to a significant surge in particulate organic carbon (POC) by 19.7% and 37.7%, respectively, albeit NPKSCa reduced MAOC by 14.9% relative to NPK. Linear regression analysis unveiled a positive correlation between POC and soil pH, while SOC and MAOC exhibited an initial rise at lower pH levels followed by stabilization as pH continuously increasing. A partial least squares path model showed two pathways through which pH influenced SOC: firstly, by positively affecting SOC through increasing Fe and Al oxides contents and enhanced aggregate stability, and secondly, by negatively influencing SOC through altered ratios of fungi/bacteria and Gram-positive bacteria/Gram-negative bacteria. In conclusion, the long-term effects of lime and straw application on SOC and MAOC were contingent upon soil pH, with more pronounced positive effects observed at lower pH levels. These findings underscore the importance of considering soil pH when implementing lime and straw strategies to mitigate acidification and regulate SOC in acidic red soil.
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Affiliation(s)
- Zhe Shen
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Tianfu Han
- School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Jing Huang
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China; Qiyang Farmland Ecosystem National Observation and Research Station, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Qiyang, Hunan, 426182, China
| | - Jiwen Li
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Nano Alemu Daba
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Ntagisanimana Gilbert
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Muhammad Numan Khan
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Asad Shah
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Huimin Zhang
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China; Qiyang Farmland Ecosystem National Observation and Research Station, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Qiyang, Hunan, 426182, China.
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Li Y, Zhang M, An Y, Wang L, Wang X, Tong S, Wu H, Jiang M, Guo Y, Jiang L. Factors governing the dynamics of soil organic carbon and nitrogen in wetlands undergoing management changes in a semi-arid region. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 367:122005. [PMID: 39079485 DOI: 10.1016/j.jenvman.2024.122005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 07/25/2024] [Accepted: 07/26/2024] [Indexed: 08/15/2024]
Abstract
Soil organic carbon and nitrogen play pivotal roles as indicators of soil quality and ecological functioning in wetlands. The escalating impact of human activities and climate change has led to a severe degradation of wetland soils, particularly in semi-arid regions. However, an understanding of the factors governing the dynamics of total soil organic carbon (TSOC) and total soil nitrogen (TSN) in semi-arid areas remains elusive, impeding a comprehensive understanding of wetland ecological functions. The present study investigated variations in TSOC and TSN content as well as vegetation and soil physicochemical properties under five different land management practices (mowed wetlands, mowed and slightly grazed wetlands, moderately grazed wetlands, heavily grazed wetlands, and natural wetlands unaffected by human interference) in the semi-arid Songnen Plain region of China. The results revealed significant decreases in TSOC and TSN content within managed wetlands compared to natural wetlands. Moreover, positive correlations were observed between pairs of SOC-TN or their storage values for SOC (TSOC)-TN (TSN). Furthermore, TSOC and TSN exhibited significant positive associations with aboveground and belowground biomass levels, stem C:N, stem C:P, soil C:P, and soil N:P. Additionally, redundancy analysis indicated that species diversity accounted for 37.4% of the variations in TSOC-TSN while belowground biomass accounted for 8.5% of the variations. Furthermore, nutrient content within stems (particularly N content and C:P) contributed to a 37.2% variation in TSOC and TSN whereas root nutrient content (especially N:P, C:N, and C:P) contributed to a 15.3% variation. Soil C:P, C:N, and total phosphorous (TP) content accounted for 65.7%, 9.6%, and 7.5% of variations of TSOC and TSN, respectively. Besides, variation partitioning analysis revealed that plant community characteristics, community nutrient content, and soil physicochemical properties collectively influenced the dynamics of TSOC and TSN. Among these factors, soil physicochemical properties emerged as the primary drivers of carbon and nitrogen dynamics in degraded wetlands in semi-arid regions. The impact on TSN was more pronounced than that of TSOC. This study provides valuable insights for understanding the processes and mechanisms underlying carbon and nitrogen accumulation in degraded wetlands, facilitating the development of regionally adaptive management plans under different management practices.
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Affiliation(s)
- Yifan Li
- State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Mingye Zhang
- State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Yu An
- State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China.
| | - Le Wang
- State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Xuan Wang
- State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shouzheng Tong
- State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Haitao Wu
- State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Ming Jiang
- State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Yue Guo
- Wetland Protection and Management Office of Jilin Province, Changchun, 130022, China
| | - Li Jiang
- Momoge National Nature Reserve of Jilin, Zhenlai, 137300, Jilin Province, China
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29
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Ouyang S, Bi Z, Zhou Q. Nanocolloids in the soil environment: Transformation, transport and ecological effects. ENVIRONMENTAL RESEARCH 2024; 262:119852. [PMID: 39197486 DOI: 10.1016/j.envres.2024.119852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2024] [Revised: 08/17/2024] [Accepted: 08/25/2024] [Indexed: 09/01/2024]
Abstract
Nanocolloids (Ncs) are ubiquitous in natural systems and play a critical role in the biogeochemical cycling of trace metals and the mobility of organic pollutants. However, the environmental behavior and ecological effects of Ncs in the soil remain largely unknown. The accumulation of Ncs may have detrimental or beneficial effects on different compartments of the soil environment. This review discusses the major transformation processes (e.g., agglomeration/aggregation, absorption, deposition, dissolution, and redox reactions), transport, bioavailability of Ncs, and their roles in element cycles in soil systems. Notably, Ncs can act as effective carriers for other pollutants and contribute to environmental pollution by spreading pathogens, nutrients, heavy metals, and organic contaminants to adjacent water bodies or groundwater. Finally, the key knowledge gaps are highlighted to better predict their potential risks, and important new directions include exploring the geochemical process and mechanism of Ncs's formation; elucidating the transformation, transport, and ultimate fate of Ncs, and their long-term effect on contaminants, organisms, and elemental cycling; and identifying the impact on the growth and quality of important crops, evaluating its dominant effect on agro-ecosystems in the soil environment.
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Affiliation(s)
- Shaohu Ouyang
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Carbon Neutrality Interdisciplinary Science Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Zhicheng Bi
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Carbon Neutrality Interdisciplinary Science Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Qixing Zhou
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Carbon Neutrality Interdisciplinary Science Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China.
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30
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Hu H, Qian C, Xue K, Jörgensen RG, Keiluweit M, Liang C, Zhu X, Chen J, Sun Y, Ni H, Ding J, Huang W, Mao J, Tan RX, Zhou J, Crowther TW, Zhou ZH, Zhang J, Liang Y. Reducing the uncertainty in estimating soil microbial-derived carbon storage. Proc Natl Acad Sci U S A 2024; 121:e2401916121. [PMID: 39172788 PMCID: PMC11363314 DOI: 10.1073/pnas.2401916121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 07/22/2024] [Indexed: 08/24/2024] Open
Abstract
Soil organic carbon (SOC) is the largest carbon pool in terrestrial ecosystems and plays a crucial role in mitigating climate change and enhancing soil productivity. Microbial-derived carbon (MDC) is the main component of the persistent SOC pool. However, current formulas used to estimate the proportional contribution of MDC are plagued by uncertainties due to limited sample sizes and the neglect of bacterial group composition effects. Here, we compiled the comprehensive global dataset and employed machine learning approaches to refine our quantitative understanding of MDC contributions to total carbon storage. Our efforts resulted in a reduction in the relative standard errors in prevailing estimations by an average of 71% and minimized the effect of global variations in bacterial group compositions on estimating MDC. Our estimation indicates that MDC contributes approximately 758 Pg, representing approximately 40% of the global soil carbon stock. Our study updated the formulas of MDC estimation with improving the accuracy and preserving simplicity and practicality. Given the unique biochemistry and functioning of the MDC pool, our study has direct implications for modeling efforts and predicting the land-atmosphere carbon balance under current and future climate scenarios.
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Affiliation(s)
- Han Hu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing210008, China
- University of the Chinese Academy of Sciences, Beijing100049, China
| | - Chao Qian
- National Key Laboratory for Novel Software Technology, Nanjing University, Nanjing210023, China
- School of Artificial Intelligence, Nanjing University, Nanjing210023, China
| | - Ke Xue
- National Key Laboratory for Novel Software Technology, Nanjing University, Nanjing210023, China
- School of Artificial Intelligence, Nanjing University, Nanjing210023, China
| | - Rainer Georg Jörgensen
- Department of Soil Biology and Plant Nutrition, University of Kassel, Kassel34117, Germany
| | - Marco Keiluweit
- Institute of Earth Surface Dynamics, University of Lausanne, LausanneCH-1015, Switzerland
| | - Chao Liang
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang110016, China
- Key Lab of Conservation Tillage and Ecological Agriculture, Liaoning Province, Shenyang110016, China
| | - Xuefeng Zhu
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang110016, China
- Key Lab of Conservation Tillage and Ecological Agriculture, Liaoning Province, Shenyang110016, China
| | - Ji Chen
- Department of Agroecology, Aarhus University, Tjele8830, Denmark
- Aarhus University Centre for Circular Bioeconomy, Aarhus University, Tjele8830, Denmark
- Interdisciplinary Centre for Climate Change, Aarhus University, Roskilde4000, Denmark
| | - Yishen Sun
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing210008, China
- University of the Chinese Academy of Sciences, Beijing100049, China
| | - Haowei Ni
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing210008, China
- University of the Chinese Academy of Sciences, Beijing100049, China
| | - Jixian Ding
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing210008, China
| | - Weigen Huang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing210008, China
- University of the Chinese Academy of Sciences, Beijing100049, China
| | - Jingdong Mao
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, VA23529
| | - Rong-Xi Tan
- National Key Laboratory for Novel Software Technology, Nanjing University, Nanjing210023, China
- School of Artificial Intelligence, Nanjing University, Nanjing210023, China
| | - Jizhong Zhou
- School of Biological Sciences, University of Oklahoma, Norman, OK73069
| | - Thomas W. Crowther
- Department of Environmental Systems Science, Institute of Integrative Biology, ETH Zurich8092, Switzerland
| | - Zhi-Hua Zhou
- National Key Laboratory for Novel Software Technology, Nanjing University, Nanjing210023, China
- School of Artificial Intelligence, Nanjing University, Nanjing210023, China
| | - Jiabao Zhang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing210008, China
| | - Yuting Liang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing210008, China
- University of the Chinese Academy of Sciences, Beijing100049, China
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31
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Li F, Chen L, Jia Z, Zhang J, Zhao Z, Han Y, Wang Y. Core microbial taxonomies that maintain high organic carbon content in upland soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 939:173300. [PMID: 38810757 DOI: 10.1016/j.scitotenv.2024.173300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 05/13/2024] [Accepted: 05/14/2024] [Indexed: 05/31/2024]
Abstract
The accumulation of soil carbon (C) is crucial for the productivity and ecological function of farmland ecosystems. The balance between microbial carbon dioxide (CO2) emission and fixation determines the sustained accumulation potential of C in soil. Microorganisms involved in this process are highly obscure, thus hindering identification and further application of microorganisms with fertile soil function. In this study, a series of typical upland farmland soils were collected from 29 regions and their microbial community structure and soil C fractions were analyzed. Additionally, the rates of CO2 emission and fixation in each soil were measured. The results showed that the correlation between soil CO2 emissions and the SOC concentration was logarithmic, while that between CO2 fixation and SOC was linear. Bacterial and fungal diversity showed an upward trend with increasing soil C, and their α diversity was significantly correlated with CO2 fixation, but not correlated with CO2 emission. Fungi were more associated with soil C than bacteria, and the strength of linkage with soil C varied among the different phyla of microorganisms. Furthermore, the core microbial taxa in soils with low, medium and high SOC levels were identified by discarding redundant amplicon sequence variants, and their community differentiation was significantly driven by soil CO2 emission and fixation based on Mantel analysis. The high abundance of Chloroflexi, Nitrospirota, Actinobacteria, and Mortierellomycota in core taxa might indicate a high level of SOC level. This study highlights that SOC fluctuations are mainly driven by the core microbial taxa, rather than all microbial taxa in the agricultural system. Our research sheds light on the targeted regulation of the soil microbial community structure in upland farmland for soil fertility enhancement.
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Affiliation(s)
- Fang Li
- College of Resources and Environment, Henan Agricultural University, Zhengzhou 450002, China
| | - Lin Chen
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Zhongjun Jia
- Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Jiabao Zhang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Zhanhui Zhao
- School of Survey and Urban Spatial Information, Henan University of Urban Construction, Pingdingshan 467021, China
| | - Yanlai Han
- College of Resources and Environment, Henan Agricultural University, Zhengzhou 450002, China; Co-construction State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou 450002, China.
| | - Yi Wang
- College of Resources and Environment, Henan Agricultural University, Zhengzhou 450002, China; Co-construction State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou 450002, China.
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32
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Feng Y, Duan J, Yang C, Zou Q, Chen Z, Pu J, Xiang Y, Chen M, Fan M, Zhang H. Microplastics and benthic animals reshape the geochemical characteristics of dissolved organic matter by inducing changes in keystone microbes in riparian sediments. ENVIRONMENTAL RESEARCH 2024; 262:119806. [PMID: 39151559 DOI: 10.1016/j.envres.2024.119806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 08/10/2024] [Accepted: 08/14/2024] [Indexed: 08/19/2024]
Abstract
Dissolved organic matter (DOM) in riparian sediments plays a vital role in regulating element cycling and pollutant behavior of river ecosystems. Microplastics (MPs) and benthic animals (BAs) have been frequently detected in riparian sediments, influencing the substance transformation in river ecosystems. However, there is still a lack of systematic investigation on the effects of MPs and BAs on sediment DOM. This study investigated the impact of MPs and BAs on the geochemical characteristics of DOM in riparian sediments and their microbial mechanisms. The results showed that MPs and BAs increased sediment DOC concentration by 34.24%∼232.97% and promoted the conversion of macromolecular components to small molecular components, thereby reducing the humification degree of DOM. Mathematical model verified that the changes of keystone microbes composition in sediments were direct factors affecting the characteristics of DOM in riparian sediment. Especially, MPs tolerant microbes, including Planctomicrobium, Rhodobacter, Hirschia and Lautropia, significantly increased DOC concentration and decreased humification degree (P < 0.05). In addition, MPs and BAs could also influence keystone microbes in sediments by altering the structure of microbial network, thereby indirectly affecting DOM characteristics. The study demonstrates the pollution behavior of MPs in river ecosystems and provides a basis for protecting the ecological function of riparian sediments from MPs pollution.
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Affiliation(s)
- Yuanyuan Feng
- School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Jinjiang Duan
- School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Cheng Yang
- School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Qingping Zou
- School of Energy, Geoscience, Infrastructure and Society, Heriot-Watt University, Edinburgh, EH14 4AS, United Kingdom
| | - Ziwei Chen
- Key Laboratory of Hydraulic and Waterway Engineering, Ministry of Education, Chongqing Jiaotong University, Chongqing, 400074, China
| | - Jia Pu
- School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Yu Xiang
- School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Mengli Chen
- School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu, 611756, China.
| | - Meikun Fan
- School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Han Zhang
- School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu, 611756, China.
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33
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Joshi E, Schwarzbach MR, Briggs B, Coats ER, Coleman MD. Nutrient leaching potential along a time series of forest water reclamation facilities in northern Idaho. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 366:121729. [PMID: 38976949 DOI: 10.1016/j.jenvman.2024.121729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 06/21/2024] [Accepted: 07/02/2024] [Indexed: 07/10/2024]
Abstract
Forest water reclamation is a decades-old practice of repurposing municipal reclaimed water using land application on forests to filter nutrients and increase wood production. However, long-term application may lead to nutrient saturation, leaching, and potential impairment of ground and surface water quality. We studied long-term effects of reclaimed water application on nutrient leaching potential in a four-decade time series of forest water reclamation facilities in northern Idaho. Our approach compared reclaimed water treated plots with untreated control plots at each of the forest water reclamation facilities. We measured soil nitrifier abundance and net nitrification rates and used tension lysimeters to sample soil matrix water and drain gauges to sample from a combination of matrix and preferential flow paths. We determined nutrient leaching as the product of soil water nutrient concentrations and model-estimated drainage flux. There was more than 450-fold increase in nitrifier abundance and a 1000-fold increase in net nitrification rates in treated plots compared with control plots at long-established facilities, indicating greater nitrate production with increased cumulative inputs. There were no differences in soil water ammonium, phosphate, and dissolved organic nitrogen concentrations between control and effluent treatments in tension lysimeter samples. However, concurrent with increased nitrifier abundance and net nitrification, nitrate concentration below the rooting zone was 2 to 4-fold higher and nitrate leaching was 4 to 10-fold higher in effluent treated plots, particularly at facilities that have been in operation for over two decades. Thus, net nitrification and nitrifier abundance assays are likely indicators of nitrate leaching potential. Inorganic nutrient concentrations in drain gauge samples were 2 to 11-fold higher than lysimeter samples, suggesting nutrient losses occurred predominantly through preferential flow paths. Nitrate was vulnerable to leaching during the wet season under saturated flow conditions. Although nitrogen saturation is a concern that should be mitigated at long-established facilities, these forest water reclamation facilities were able to maintain average soil water nitrate concentrations to less than 2 mg L-1, so that nitrogen and phosphorous are effectively filtered to below safe water standards.
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Affiliation(s)
- Eureka Joshi
- Environmental Science Program, College of Natural Resources, University of Idaho, Moscow, ID, 83844, USA
| | | | - Bailey Briggs
- Environmental Science Program, College of Natural Resources, University of Idaho, Moscow, ID, 83844, USA
| | - Erik R Coats
- Department of Civil and Environmental Engineering, University of Idaho, Moscow, ID, 83844, USA
| | - Mark D Coleman
- Department of Forest, Rangeland, and Fire Sciences, College of Natural Resources, University of Idaho, Moscow, ID, 83844, USA.
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34
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Wang Y, Yu D, Li J, Huang T. Modeling the carbon dynamics of ecosystem in a typical permafrost area. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 934:173204. [PMID: 38750735 DOI: 10.1016/j.scitotenv.2024.173204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 03/17/2024] [Accepted: 05/11/2024] [Indexed: 05/20/2024]
Abstract
Climate change poses mounting threats to fragile alpine ecosystem worldwide. Quantifying changes in carbon stocks in response to the shifting climate was important for developing climate change mitigation and adaptation strategies. This study utilized a process-based land model (Community Land Model 5.0) to analyze spatiotemporal variations in vegetation carbon stock (VCS) and soil organic carbon stock (SOCS) across a typical permafrost area - Qinghai Province, China, from 2000 to 2018. Multiple potential factors influencing carbon stocks dynamics were analyzed, including climate, vegetation, soil hydrothermal status, and soil properties. The results indicated that provincial vegetation carbon storage was 0.22 PgC (0.32 kg/m2) and soil organic carbon pool was 9.12 PgC (13.03 kg/m2). VCS showed a mild increase while SOCS exhibited fluctuating uptrends during this period. Higher carbon stocks were observed in forest (21.74 kg/m2) and alpine meadow (18.08 kg/m2) compared to alpine steppes (9.63 kg/m2). Over 90 % of the carbon was stored in the 0-30 cm topsoil layer. The contribution rates of soil carbon in the 30-60 cm and 60-100 cm soil layers were significantly small, despite increasing stocks across all depths. Solar radiation, temperature, and NDVI emerged as primary influential factors for overall carbon stocks, exhibiting noticeable spatial variability. For SOCS at different depths, the normalized differential vegetation index (NDVI) was the foremost predictor of landscape-level carbon distributions, which explained 52.8 % of SOCS variability in shallow layers (0-30 cm) but dropped to just 12.97 % at the depth of 30-60 cm. However, the dominance of NDVI diminished along the soil depth gradients, superseded by radiation and precipitation. Additionally, with an increase in soil depth, the influence of inherent soil properties also increased. This simulation provided crucial insights for landscape-scale carbon responses to climate change, and offered valuable reference for other climate change-sensitive areas in terms of ecosystem carbon management.
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Affiliation(s)
- Yusheng Wang
- State Key Laboratory of Earth Surface Processes and Resource Ecology (ESPRE), Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
| | - Deyong Yu
- State Key Laboratory of Earth Surface Processes and Resource Ecology (ESPRE), Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China; Key Laboratory of Tibetan Plateau Land Surface Processes and Ecological Conservation, Ministry of Education, Qinghai Normal University, Xining 810016, China.
| | - Jingwen Li
- Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
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35
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Sharma R, Levi MR, Ricker MC, Thompson A, King EG, Robertson K. Scaling of soil organic carbon in space and time in the Southern Coastal Plain, USA. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 933:173060. [PMID: 38723962 DOI: 10.1016/j.scitotenv.2024.173060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 05/02/2024] [Accepted: 05/06/2024] [Indexed: 05/30/2024]
Abstract
Soil organic carbon (SOC) is a dynamic soil property (DSP) that represents the largest portion of terrestrial carbon. Its relevance to carbon sequestration and the potential effects of land use on SOC storage, make it imperative to map across both space and time. Most regional-scale studies mapping SOC give static estimates and train different models for different periods with varying accuracies. We developed a flexible modeling approach called DSP-Scale to map SOC in both space and time. DSP-Scale uses ecological concepts and empirical data to predict DSP dynamics using inherent soil properties (static factors) and land cover changes (dynamic factors). We compiled SOC data for the 0-20 cm depth (SOC20) from 1441 points spanning a 25 million ha study area in the southeastern U.S. Coastal Plain, incorporating data from the Rapid Carbon Assessment, National Cooperative Soil Survey Soil Characterization database, and other regional studies. We developed a random forest model using climate, topography, soil survey, and land cover changes to predict SOC20 dynamics for five-year periods between 2001 and 2019. Our model explained 66 % and 59 % of the variation for the training and test data, respectively. Top predictors included mean annual precipitation, slope, and soil erosion class. Land cover 10 years before measurements of SOC20 was more important than current land cover for estimating SOC20. We estimated total SOC stocks of 207.1 and 208.3 Tg for 2001 and 2019, respectively. Highest gains of total SOC stock (0.9 Tg from 2001 to 2019) were associated with land cover change from mixed to evergreen forest. The greatest loss of total SOC stock (0.2 Tg) in the same period was associated with land cover change from pasture/hay to evergreen forest. We concluded that the DSP-Scale approach provides a flexible way to use dynamic and static factors affecting SOC stocks to predict changes in space and time at regional scales.
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Affiliation(s)
- Rajneesh Sharma
- Department of Crop and Soil Sciences, University of Georgia, Athens, GA 30602, USA; Now at the Department of Geography, University of Georgia, Athens, GA 30602, USA
| | - Matthew R Levi
- Department of Crop and Soil Sciences, University of Georgia, Athens, GA 30602, USA.
| | - Matthew C Ricker
- Department of Crop and Soil Sciences, NC State University, Box 7620, Raleigh, NC 27695-7620, USA
| | - Aaron Thompson
- Department of Crop and Soil Sciences, University of Georgia, Athens, GA 30602, USA
| | - Elizabeth G King
- Odum School of Ecology, University of Georgia, Athens, GA 30602, USA; Warnell School of Forestry and Natural Resources, University of Georgia, Athens, GA 30602, USA
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36
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Zhang Z, Cui X, Qu X, Fu H, Tao S, Zhu D. Revealing Molecular Structures of Nitrogen-Containing Compounds in Dissolved Black Carbon Using Ultrahigh-Resolution Mass Spectrometry Combined with Thermodynamic Calculations. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:11998-12007. [PMID: 38935345 DOI: 10.1021/acs.est.4c01829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
Landscape wildfires generate a substantial amount of dissolved black carbon (DBC) annually, yet the molecular nitrogen (N) structures in DBC are poorly understood. Here, we systematically compared the chemodiversity of N-containing molecules among three different DBC samples from rice straw biochar pyrolyzed at 300, 400, and 500 °C, one leached dissolved organic carbon (LDOC) sample from composted rice straw, and one fire-affected soil dissolved organic matter (SDOMFire) sample using Fourier-transform ion cyclotron resonance mass spectrometry (FT-ICR MS). N-Containing molecules contributed 20.0%, 36.1%, and 43.7% of total compounds in Combined DBC (pooling together the three DBC), LDOC, and SDOMFire, respectively, and molecules with fewer N atoms had higher proportions (i.e., N1 > N2 > N3). The N-containing molecules in Combined DBC were dominated by polycyclic aromatic (62.2%) and aromatic (14.4%) components, while those in LDOC were dominated by lignin-like (50.4%) and aromatic (30.1%) components. The composition and structures of N-containing molecules in SDOMFire were more similar to those in DBC than in LDOC. As the temperature rose, the proportion of the nitrogenous polycyclic aromatic component in DBC significantly increased with concurrent enhanced oxidation and unsaturation of N. As indicated by density functional theory (DFT)-based thermodynamic calculations, the proportion of aliphatic amide N decreased from 23.2% to 7.9%, whereas that of nitroaromatic N increased from 10.0% to 39.5% as the temperature increased from 300 to 500 °C; alternatively, the proportion of aromatic N in the 5/6 membered ring remained relatively stable (∼31%) and that of aromatic amide N peaked at 400 °C (32.7%). Our work first provides a comprehensive and thorough description of molecular N structures of DBC, which helps to better understand and predict their fate and biogeochemical behavior.
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Affiliation(s)
- Zhiyuan Zhang
- Key Laboratory of the Ministry of Education for Earth Surface Processes, School of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Xiurui Cui
- Key Laboratory of the Ministry of Education for Earth Surface Processes, School of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Xiaolei Qu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu 210023, China
| | - Heyun Fu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu 210023, China
| | - Shu Tao
- Key Laboratory of the Ministry of Education for Earth Surface Processes, School of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Dongqiang Zhu
- Key Laboratory of the Ministry of Education for Earth Surface Processes, School of Urban and Environmental Sciences, Peking University, Beijing 100871, China
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37
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Qiu J, Lü F, Li X, Zhang H, Xu B, He PJ. Regular Tetrahedron Model for the Assessment of High-Resolution Mass Spectrometry Data of Four-Way Fractionated Dissolved Organic Matter. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:11685-11694. [PMID: 38905014 DOI: 10.1021/acs.est.4c01936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/23/2024]
Abstract
A regular tetrahedron model was established to pierce the fractionation of dissolved organic matter (DOM) among quaternary components by using high-resolution mass spectrometry. The model can stereoscopically visualize molecular formulas of DOM to show the preference to each component according to the position in a regular tetrahedron. A classification method was subsequently developed to divide molecular formulas into 15 categories related to fractionation ratios, the relative change of which was demonstrated to be convergent with the uncertainty of mass peak area. The practicality of the regular tetrahedron model was verified by seven kinds of sludge from waste leachate treatment and sewage wastewater treatment plants by using stratification of extracellular polymeric substances coupled with Orbitrap MS as an example, presenting the DOM chemodiversity in stratified sludge flocs. Sensitivity analysis proved that classification results were relatively stable with the perturbation of four model parameters. Multinomial logistic regression analysis could further help identify the effect of molecular properties on the fractionation of DOM based on the classification results of the regular tetrahedron model. This model offers a methodology for the assessment of specificity of sequential extraction on DOM from solid or semisolid components and simplifies the complex mathematical expression of fractionation coefficients for quaternary components.
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Affiliation(s)
- Junjie Qiu
- Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, PR China
| | - Fan Lü
- Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, PR China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China
| | - Xiao Li
- Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, PR China
| | - Hua Zhang
- Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, PR China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China
| | - Bin Xu
- Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, PR China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China
| | - Pin-Jing He
- Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, PR China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China
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38
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Zhou Z, Ren C, Wang C, Delgado-Baquerizo M, Luo Y, Luo Z, Du Z, Zhu B, Yang Y, Jiao S, Zhao F, Cai A, Yang G, Wei G. Global turnover of soil mineral-associated and particulate organic carbon. Nat Commun 2024; 15:5329. [PMID: 38909059 PMCID: PMC11193739 DOI: 10.1038/s41467-024-49743-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 06/18/2024] [Indexed: 06/24/2024] Open
Abstract
Soil organic carbon (SOC) persistence is predominantly governed by mineral protection, consequently, soil mineral-associated (MAOC) and particulate organic carbon (POC) turnovers have different impacts on the vulnerability of SOC to climate change. Here, we generate the global MAOC and POC maps using 8341 observations and then infer the turnover times of MAOC and POC by a data-model integration approach. Global MAOC and POC storages are975 964 987 Pg C (mean with 5% and 95% quantiles) and330 323 337 Pg C, while global mean MAOC and POC turnover times are129 45 383 yr and23 5 82 yr in the top meter, respectively. Climate warming-induced acceleration of MAOC and POC decomposition is greater in subsoil than that in topsoil. Overall, the global atlas of MAOC and POC turnover, together with the global distributions of MAOC and POC stocks, provide a benchmark for Earth system models to diagnose SOC-climate change feedback.
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Affiliation(s)
- Zhenghu Zhou
- College of Ecology and Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, Northeast Forestry University, Harbin, Heilongjiang, China
- Northeast Asia Biodiversity Research Center, Northeast Forestry University, Harbin, Heilongjiang, China
| | - Chengjie Ren
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| | - Chuankuan Wang
- College of Ecology and Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, Northeast Forestry University, Harbin, Heilongjiang, China
| | - Manuel Delgado-Baquerizo
- Laboratorio de Biodiversidad y Funcionamiento Ecosistémico. Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), CSIC, Av. Reina Mercedes, Sevilla, Spain
| | - Yiqi Luo
- School of Integrative Plant Science, Cornell University, Ithaca, NY, USA
| | - Zhongkui Luo
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China
| | - Zhenggang Du
- College of Ecology and Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, Northeast Forestry University, Harbin, Heilongjiang, China
| | - Biao Zhu
- Institute of Ecology, College of Urban and Environmental Sciences, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing, China
| | - Yuanhe Yang
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China
| | - Shuo Jiao
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, College of Life Sciences, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Fazhu Zhao
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, Northwest University, Xi'an, Shaanxi, China
| | - Andong Cai
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Gaihe Yang
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Gehong Wei
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, College of Life Sciences, Northwest A&F University, Yangling, 712100, Shaanxi, China.
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39
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Guo L, Qu C, Zhou Y, Chen Y, Cai P, Chen W, Chen C, Huang Q. Trade-off between Pore-Throat Structure and Mineral Composition in Modulating the Stability of Soil Organic Carbon. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:10084-10094. [PMID: 38816987 DOI: 10.1021/acs.est.3c09886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
The preservation of soil organic carbon (OC) is an effective way to decelerate the emission of CO2 emission. However, the coregulation of pore structure and mineral composition in OC stabilization remains elusive. We employed the in situ nondestructive oxidation of OC by low-temperature ashing (LTA) combined with near edge X-ray absorption fine structure (NEXAFS), high-resolution microtomography (μ-CT), field emission electron probe microanalysis (FE-EPMA) with C-free embedding, and novel Cosine similarity measurement to investigate the C retention in different aggregate fractions of contrasting soils. Pore structure and minerals contributed equally (ca. 50%) to OC accumulation in macroaggregates, while chemical protection played a leading role in C retention with 53.4%-59.2% of residual C associated with minerals in microaggregates. Phyllosilicates were discovered to be more prominent than Fe (hydr)oxides in C stabilization. The proportion of phyllosilicates-associated C (52.0%-61.9%) was higher than that bound with Fe (hydr)oxides (45.6%-55.3%) in all aggregate fractions tested. This study disentangled quantitatively for the first time a trade-off between physical and chemical protection of OC varying with aggregate size and the different contributions of minerals to OC preservation. Incorporating pore structure and mineral composition into C modeling would optimize the C models and improve the soil C content prediction.
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Affiliation(s)
- Lingke Guo
- National Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Key Laboratory of Soil Environment and Pollution Remediation, Huazhong Agricultural University, Wuhan 430070, China
- State Environmental Protection Key Laboratory of Soil Health and Green Remediation, Wuhan 430070, China
| | - Chenchen Qu
- National Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Key Laboratory of Soil Environment and Pollution Remediation, Huazhong Agricultural University, Wuhan 430070, China
- State Environmental Protection Key Laboratory of Soil Health and Green Remediation, Wuhan 430070, China
| | - Yue Zhou
- National Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Key Laboratory of Soil Environment and Pollution Remediation, Huazhong Agricultural University, Wuhan 430070, China
- State Environmental Protection Key Laboratory of Soil Health and Green Remediation, Wuhan 430070, China
| | - Yuexi Chen
- Department of Computer Science, Dixie State University, St. George, Utah 84770, United States
| | - Peng Cai
- National Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Key Laboratory of Soil Environment and Pollution Remediation, Huazhong Agricultural University, Wuhan 430070, China
- State Environmental Protection Key Laboratory of Soil Health and Green Remediation, Wuhan 430070, China
| | - Wenli Chen
- National Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
| | - Chengrong Chen
- Australian Rivers Institute and School of Environment and Sciences, Griffith University, Brisbane, Queensland 4111, Australia
| | - Qiaoyun Huang
- National Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Key Laboratory of Soil Environment and Pollution Remediation, Huazhong Agricultural University, Wuhan 430070, China
- State Environmental Protection Key Laboratory of Soil Health and Green Remediation, Wuhan 430070, China
- China-Australia Research Laboratory on Environmental Biogeochemistry, Huazhong Agricultural University, Wuhan 430070, China
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40
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Zhang Y, Guo X, Chen L, Kuzyakov Y, Wang R, Zhang H, Han X, Jiang Y, Sun OJ. Global pattern of organic carbon pools in forest soils. GLOBAL CHANGE BIOLOGY 2024; 30:e17386. [PMID: 38899550 DOI: 10.1111/gcb.17386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 06/05/2024] [Accepted: 06/05/2024] [Indexed: 06/21/2024]
Abstract
Understanding the mechanisms of soil organic carbon (SOC) sequestration in forests is vital to ecosystem carbon budgeting and helps gain insight in the functioning and sustainable management of world forests. An explicit knowledge of the mechanisms driving global SOC sequestration in forests is still lacking because of the complex interplays between climate, soil, and forest type in influencing SOC pool size and stability. Based on a synthesis of 1179 observations from 292 studies across global forests, we quantified the relative importance of climate, soil property, and forest type on total SOC content and the specific contents of physical (particulate vs. mineral-associated SOC) and chemical (labile vs. recalcitrant SOC) pools in upper 10 cm mineral soils, as well as SOC stock in the O horizons. The variability in the total SOC content of the mineral soils was better explained by climate (47%-60%) and soil factors (26%-50%) than by NPP (10%-20%). The total SOC content and contents of particulate (POC) and recalcitrant SOC (ROC) of the mineral soils all decreased with increasing mean annual temperature because SOC decomposition overrides the C replenishment under warmer climate. The content of mineral-associated organic carbon (MAOC) was influenced by temperature, which directly affected microbial activity. Additionally, the presence of clay and iron oxides physically protected SOC by forming MAOC. The SOC stock in the O horizons was larger in the temperate zone and Mediterranean regions than in the boreal and sub/tropical zones. Mixed forests had 64% larger SOC pools than either broadleaf or coniferous forests, because of (i) higher productivity and (ii) litter input from different tree species resulting in diversification of molecular composition of SOC and microbial community. While climate, soil, and forest type jointly determine the formation and stability of SOC, climate predominantly controls the global patterns of SOC pools in forest ecosystems.
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Affiliation(s)
- Yuxue Zhang
- School of Life Sciences, Hebei University, Baoding, China
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
| | - Xiaowei Guo
- College of Natural Resources and Environment, Northwest A&F University, Yangling, China
- Key Laboratory of Plant Nutrition and the Agri-Environment in Northwest China, MOA, Yangling, China
| | - Longxue Chen
- School of Life Sciences, Hebei University, Baoding, China
| | - Yakov Kuzyakov
- Department of Soil Science of Temperate Ecosystems, Department of Agricultural Soil Science, University of Göttingen, Göttingen, Germany
- Department of Agricultural Soil Science, University of Göttingen, Göttingen, Germany
- Peoples Friendship University of Russia (RUDN University), Moscow, Russia
- Institute of Environmental Sciences, Kazan Federal University, Kazan, Russia
| | - Ruzhen Wang
- School of Life Sciences, Hebei University, Baoding, China
| | - Haiyang Zhang
- School of Life Sciences, Hebei University, Baoding, China
| | - Xingguo Han
- School of Life Sciences, Hebei University, Baoding, China
| | - Yong Jiang
- School of Life Sciences, Hebei University, Baoding, China
| | - Osbert Jianxin Sun
- School of Life Sciences, Hebei University, Baoding, China
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
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41
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Christel H, Bruelheide H, Cesarz S, Eisenhauer N, Hähn GJA, Beugnon R. The spatial distribution of tree-tree interaction effects on soil microbial biomass and respiration. Ecol Evol 2024; 14:e11530. [PMID: 38895566 PMCID: PMC11183910 DOI: 10.1002/ece3.11530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 04/05/2024] [Accepted: 05/13/2024] [Indexed: 06/21/2024] Open
Abstract
The capacity of forests to sequester carbon in both above- and belowground compartments is a crucial tool to mitigate rising atmospheric carbon concentrations. Belowground carbon storage in forests is strongly linked to soil microbial communities that are the key drivers of soil heterotrophic respiration, organic matter decomposition and thus nutrient cycling. However, the relationships between tree diversity and soil microbial properties such as biomass and respiration remain unclear with inconsistent findings among studies. It is unknown so far how the spatial configuration and soil depth affect the relationship between tree richness and microbial properties. Here, we studied the spatial distribution of soil microbial properties in the context of a tree diversity experiment by measuring soil microbial biomass and respiration in subtropical forests (BEF-China experiment). We sampled soil cores at two depths at five locations along a spatial transect between the trees in mono- and hetero-specific tree pairs of the native deciduous species Liquidambar formosana and Sapindus saponaria. Our analyses showed decreasing soil microbial biomass and respiration with increasing soil depth and distance from the tree in mono-specific tree pairs. We calculated belowground overyielding of soil microbial biomass and respiration - which is higher microbial biomass or respiration than expected from the monocultures - and analysed the distribution patterns along the transect. We found no general overyielding across all sampling positions and depths. Yet, we encountered a spatial pattern of microbial overyielding with a significant microbial overyielding close to L. formosana trees and microbial underyielding close to S. saponaria trees. We found similar spatial patterns across microbial properties and depths that only differed in the strength of their effects. Our results highlight the importance of small-scale variations of tree-tree interaction effects on soil microbial communities and functions and are calling for better integration of within-plot variability to understand biodiversity-ecosystem functioning relationships.
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Affiliation(s)
- Henriette Christel
- German Center for Integrative Biodiversity Research (iDiv) Halle‐Jena‐LeipzigLeipzigGermany
- Institute of Biology, Leipzig UniversityLeipzigGermany
| | - Helge Bruelheide
- German Center for Integrative Biodiversity Research (iDiv) Halle‐Jena‐LeipzigLeipzigGermany
- Institute of Biology/Geobotany and Botanical Garden, Martin Luther University Halle‐WittenbergHalleGermany
| | - Simone Cesarz
- German Center for Integrative Biodiversity Research (iDiv) Halle‐Jena‐LeipzigLeipzigGermany
- Institute of Biology, Leipzig UniversityLeipzigGermany
| | - Nico Eisenhauer
- German Center for Integrative Biodiversity Research (iDiv) Halle‐Jena‐LeipzigLeipzigGermany
- Institute of Biology, Leipzig UniversityLeipzigGermany
| | - Georg J. A. Hähn
- BIOME Lab, Department of Biological, Geological and Environmental Sciences (BiGeA)Alma Mater Studiorum University of BolognaBolognaItaly
| | - Rémy Beugnon
- German Center for Integrative Biodiversity Research (iDiv) Halle‐Jena‐LeipzigLeipzigGermany
- Institute for Meteorology, Leipzig UniversityLeipzigGermany
- CEFE, Univ Montpellier, CNRS, EPHE, IRDMontpellier Cedex 5France
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42
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Yadav RK, Purakayastha TJ, Bhaduri D, Das R, Dey S, Sukumaran S, Walia SS, Singh R, Shukla VK, Yadava MS, Ravisankar N. Development of unique soil organic carbon stability index under influence of integrated nutrient management in four major soil orders of India. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 360:121208. [PMID: 38788413 DOI: 10.1016/j.jenvman.2024.121208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 05/09/2024] [Accepted: 05/19/2024] [Indexed: 05/26/2024]
Abstract
Stability of soil organic carbon (SOC) is pre-requisite for stabilization of C leading to long-term C sequestration. However, development of a comprehensive metric of SOC stability is a major challenge. The objectives for the study were to develop novel SOC stability indices by encompassing physical, chemical, and biochemical SOC stability parameters and identifying the most important indicators from a Mollisol, an Inceptisol, a Vertisol, and an Alfisol under long-term manuring and fertilization. The treatments were control, 100%NPK, 50% NPK+ 50% N through either farmyard manure, cereal residue, or green manure. SOC stability indicators were selected, transformed and integrated into unique SOC stability indices via conceptual framework and principal component analysis. Principal component analysis identified Al-macroaggregate, humic acid C-microaggregate, microaggregate-C, particulate organic matter-C-macroaggregate and polyphenol-microaggregate as the important SOC stability indicators. The principal component analysis -based SOC stability index varied from 0.2 to 0.9, 0.1 to 0.5, 0.2 to 0.6, 0.1 to 0.5 for Mollisol, Inceptisol, Vertisol and Alfisol, respectively. The SOC-stability index derived from conceptual framework and principal component analysis significantly lined up well with one another, although NaOCl-Res-C showed a high correlation with both conceptual framework (r = 0.8) and principal component analysis-based (r = 0.7) SOC stability indexes, suggesting that both methods might be used to quickly assess SOC stability in four soil orders. Overall, 50%NPK+50%N by farmyard manure or green manure emerged as the most effective management practices for enhancing stability of SOC in Mollisol, Inceptisol, Vertisol, and Alfisol of India which might act as major C sink in rice-wheat and maize-wheat cropping systems. The other aspect of C sequestration is to enhance agricultural productivity without depending much on expensive chemical fertilizers. The model yardstick thus developed for assessing SOC stability might be useful to other systems as well.
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Affiliation(s)
- Rajendra Kumar Yadav
- AICRP on Irrigation Water Management, Agricultural Research Station, Umeedganj, Agriculture University, Kota, 324001, Rajasthan, India
| | - Tapan Jyoti Purakayastha
- Division of Soil Science and Agricultural Chemistry, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India.
| | - Debarati Bhaduri
- Crop Production Division, ICAR-National Rice Research Institute, Cuttack, 753006, Odisha, India
| | - Ruma Das
- ICAR-NBSS & LUP, Regional Centre, Kolkata, 700091, West Bengal, India
| | - Saptaparnee Dey
- Division of Soil Science and Agricultural Chemistry, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Suvana Sukumaran
- ICAR-Central Research Institute for Dryland Agriculture, Hyderabad, 500059, Telangana, India
| | - Sohan Singh Walia
- Department of Agronomy, Punjab Agricultural University, Ludhiana, 141004, Punjab, India
| | - Rohitashav Singh
- Department of Agronomy, GB Pant University of Agriculture and Technology, Pantnagar, 263145, Uttarakhand, India
| | - Virender Kumar Shukla
- Department of Agronomy, Jawaharlal Nehru Krishi Viswa Vidyalaya, Jabalpur, 482004, Madhya Pradesh, India
| | - Madan Singh Yadava
- Department of Agronomy, Birsa Agricultural University, Ranchi, 834006, Jharkhand, India
| | - Natesan Ravisankar
- Division of Integrated Farming System Management, ICAR-Indian Institute of Farming Systems Research, Modipuram, 250110, Uttar Pradesh, India
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43
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Song Y, Yao S, Li X, Wang T, Jiang X, Bolan N, Warren CR, Northen TR, Chang SX. Soil metabolomics: Deciphering underground metabolic webs in terrestrial ecosystems. ECO-ENVIRONMENT & HEALTH 2024; 3:227-237. [PMID: 38680731 PMCID: PMC11047296 DOI: 10.1016/j.eehl.2024.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 02/05/2024] [Accepted: 03/04/2024] [Indexed: 05/01/2024]
Abstract
Soil metabolomics is an emerging approach for profiling diverse small molecule metabolites, i.e., metabolomes, in the soil. Soil metabolites, including fatty acids, amino acids, lipids, organic acids, sugars, and volatile organic compounds, often contain essential nutrients such as nitrogen, phosphorus, and sulfur and are directly linked to soil biogeochemical cycles driven by soil microorganisms. This paper presents an overview of methods for analyzing soil metabolites and the state-of-the-art of soil metabolomics in relation to soil nutrient cycling. We describe important applications of metabolomics in studying soil carbon cycling and sequestration, and the response of soil organic pools to changing environmental conditions. This includes using metabolomics to provide new insights into the close relationships between soil microbiome and metabolome, as well as responses of soil metabolome to plant and environmental stresses such as soil contamination. We also highlight the advantage of using soil metabolomics to study the biogeochemical cycles of elements and suggest that future research needs to better understand factors driving soil function and health.
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Affiliation(s)
- Yang Song
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shi Yao
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaona Li
- School of Environment and Ecology, Jiangnan University, Wuxi 225127, China
| | - Tao Wang
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610299, China
| | - Xin Jiang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Nanthi Bolan
- School of Agriculture and Environment, The University of Western Australia, Nedland, WA-6009, Australia
- The UWA Institute of Agriculture, The University of Western Australia, Nedland, WA-6009, Australia
- Healthy Environments and Lives (HEAL) National Research Network, Australia
| | - Charles R. Warren
- School of Life and Environmental Sciences, University of Sydney, Heydon-Laurence Building A08, NSW 2006, Australia
| | - Trent R. Northen
- Environmental Genomics and System Biology Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, Berkeley, CA 94720, USA
- Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Scott X. Chang
- Department of Renewable Resources, University of Alberta, Edmonton, Alberta T6G 2E3, Canada
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44
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Yu C, Luong NT, Hefni ME, Song Z, Högfors-Rönnholm E, Engblom S, Xie S, Chernikov R, Broström M, Boily JF, Åström ME. Storage and Distribution of Organic Carbon and Nutrients in Acidic Soils Developed on Sulfidic Sediments: The Roles of Reactive Iron and Macropores. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:9200-9212. [PMID: 38743440 PMCID: PMC11137870 DOI: 10.1021/acs.est.3c11007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 04/11/2024] [Accepted: 05/07/2024] [Indexed: 05/16/2024]
Abstract
In a boreal acidic sulfate-rich subsoil (pH 3-4) developing on sulfidic and organic-rich sediments over the past 70 years, extensive brownish-to-yellowish layers have formed on macropores. Our data reveal that these layers ("macropore surfaces") are strongly enriched in 1 M HCl-extractable reactive iron (2-7% dry weight), largely bound to schwertmannite and 2-line ferrihydrite. These reactive iron phases trap large pools of labile organic matter (OM) and HCl-extractable phosphorus, possibly derived from the cultivated layer. Within soil aggregates, the OM is of a different nature from that on the macropore surfaces but similar to that in the underlying sulfidic sediments (C-horizon). This provides evidence that the sedimentary OM in the bulk subsoil has been largely preserved without significant decomposition and/or fractionation, likely due to physiochemical stabilization by the reactive iron phases that also existed abundantly within the aggregates. These findings not only highlight the important yet underappreciated roles of iron oxyhydroxysulfates in OM/nutrient storage and distribution in acidic sulfate-rich and other similar environments but also suggest that boreal acidic sulfate-rich subsoils and other similar soil systems (existing widely on coastal plains worldwide and being increasingly formed in thawing permafrost) may act as global sinks for OM and nutrients in the short run.
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Affiliation(s)
- Changxun Yu
- Department
of Biology and Environmental Science, Linnaeus
University, 39231 Kalmar, Sweden
| | | | - Mohammed E. Hefni
- Department
of Chemistry and Biomedical Sciences, Linnaeus
University, 39231 Kalmar, Sweden
| | - Zhaoliang Song
- Institute
of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300072, China
| | - Eva Högfors-Rönnholm
- Research
and Development, Novia University of Applied
Sciences, 65200 Vaasa, Finland
| | - Sten Engblom
- Research
and Development, Novia University of Applied
Sciences, 65200 Vaasa, Finland
| | - Shurong Xie
- School
of
Earth Sciences, East China University of
Technology, Nanchang 330013, China
| | - Roman Chernikov
- Canadian
Light Source, 44 Innovation
Boulevard, Saskatoon, Saskatchewan S7N 2 V3, Canada
| | - Markus Broström
- Thermochemical
Energy Conversion Laboratory, Department of Applied Physics and Electronics, Umeå University, 90187 Umeå, Sweden
| | | | - Mats E. Åström
- Department
of Biology and Environmental Science, Linnaeus
University, 39231 Kalmar, Sweden
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45
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Lee KK, Liu S, Crocker K, Huggins DR, Tikhonov M, Mani M, Kuehn S. Functional regimes define the response of the soil microbiome to environmental change. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.15.584851. [PMID: 38559185 PMCID: PMC10980070 DOI: 10.1101/2024.03.15.584851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
The metabolic activity of soil microbiomes plays a central role in carbon and nitrogen cycling. Given the changing climate, it is important to understand how the metabolism of natural communities responds to environmental change. However, the ecological, spatial, and chemical complexity of soils makes understanding the mechanisms governing the response of these communities to perturbations challenging. Here, we overcome this complexity by using dynamic measurements of metabolism in microcosms and modeling to reveal regimes where a few key mechanisms govern the response of soils to environmental change. We sample soils along a natural pH gradient, construct >1500 microcosms to perturb the pH, and quantify the dynamics of respiratory nitrate utilization, a key process in the nitrogen cycle. Despite the complexity of the soil microbiome, a minimal mathematical model with two variables, the quantity of active biomass in the community and the availability of a growth-limiting nutrient, quantifies observed nitrate utilization dynamics across soils and pH perturbations. Across environmental perturbations, changes in these two variables give rise to three functional regimes each with qualitatively distinct dynamics of nitrate utilization over time: a regime where acidic perturbations induce cell death that limits metabolic activity, a nutrient-limiting regime where nitrate uptake is performed by dominant taxa that utilize nutrients released from the soil matrix, and a resurgent growth regime in basic conditions, where excess nutrients enable growth of initially rare taxa. The underlying mechanism of each regime is predicted by our interpretable model and tested via amendment experiments, nutrient measurements, and sequencing. Further, our data suggest that the long-term history of environmental variation in the wild influences the transitions between functional regimes. Therefore, quantitative measurements and a mathematical model reveal the existence of qualitative regimes that capture the mechanisms and dynamics of a community responding to environmental change.
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Affiliation(s)
- Kiseok Keith Lee
- Department of Ecology and Evolution, The University of Chicago, Chicago, IL 60637, USA
- Center for the Physics of Evolving Systems, The University of Chicago, Chicago, IL 60637, USA
- Center for Living Systems, The University of Chicago, Chicago, IL 60637, USA
| | - Siqi Liu
- Department of Engineering Sciences and Applied Mathematics, Northwestern University, Evanston, IL 60208, USA
| | - Kyle Crocker
- Department of Ecology and Evolution, The University of Chicago, Chicago, IL 60637, USA
- Center for the Physics of Evolving Systems, The University of Chicago, Chicago, IL 60637, USA
- Center for Living Systems, The University of Chicago, Chicago, IL 60637, USA
| | - David R. Huggins
- USDA-ARS, Northwest Sustainable Agroecosystems Research Unit, Pullman, WA 99164, USA
| | - Mikhail Tikhonov
- Department of Physics, Washington University in St. Louis, St. Louis, MO 63130, USA
| | - Madhav Mani
- Department of Engineering Sciences and Applied Mathematics, Northwestern University, Evanston, IL 60208, USA
- NSF-Simons Center for Quantitative Biology, Northwestern University, Evanston, IL 60208, USA
- National Institute for Theory and Mathematics in Biology, Northwestern University and The University of Chicago, Chicago, IL
| | - Seppe Kuehn
- Department of Ecology and Evolution, The University of Chicago, Chicago, IL 60637, USA
- Center for the Physics of Evolving Systems, The University of Chicago, Chicago, IL 60637, USA
- National Institute for Theory and Mathematics in Biology, Northwestern University and The University of Chicago, Chicago, IL
- Center for Living Systems, The University of Chicago, Chicago, IL 60637, USA
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Chen Y, Qin W, Zhang Q, Wang X, Feng J, Han M, Hou Y, Zhao H, Zhang Z, He JS, Torn MS, Zhu B. Whole-soil warming leads to substantial soil carbon emission in an alpine grassland. Nat Commun 2024; 15:4489. [PMID: 38802385 PMCID: PMC11130387 DOI: 10.1038/s41467-024-48736-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 05/13/2024] [Indexed: 05/29/2024] Open
Abstract
The sensitivity of soil organic carbon (SOC) decomposition in seasonally frozen soils, such as alpine ecosystems, to climate warming is a major uncertainty in global carbon cycling. Here we measure soil CO2 emission during four years (2018-2021) from the whole-soil warming experiment (4 °C for the top 1 m) in an alpine grassland ecosystem. We find that whole-soil warming stimulates total and SOC-derived CO2 efflux by 26% and 37%, respectively, but has a minor effect on root-derived CO2 efflux. Moreover, experimental warming only promotes total soil CO2 efflux by 7-8% on average in the meta-analysis across all grasslands or alpine grasslands globally (none of these experiments were whole-soil warming). We show that whole-soil warming has a much stronger effect on soil carbon emission in the alpine grassland ecosystem than what was reported in previous warming experiments, most of which only heat surface soils.
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Affiliation(s)
- Ying Chen
- Institute of Ecology and Ministry of Education Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China
| | - Wenkuan Qin
- Institute of Ecology and Ministry of Education Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China
| | - Qiufang Zhang
- Institute of Ecology and Ministry of Education Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China
| | - Xudong Wang
- Institute of Ecology and Ministry of Education Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China
| | - Jiguang Feng
- Institute of Ecology and Ministry of Education Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China
| | - Mengguang Han
- Institute of Ecology and Ministry of Education Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China
| | - Yanhui Hou
- Institute of Ecology and Ministry of Education Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China
| | - Hongyang Zhao
- Institute of Ecology and Ministry of Education Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China
| | - Zhenhua Zhang
- Qinghai Haibei National Field Research Station of Alpine Grassland Ecosystem and Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, 810008, China
| | - Jin-Sheng He
- Institute of Ecology and Ministry of Education Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems and College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou, 730000, China
| | - Margaret S Torn
- Climate and Ecosystem Sciences, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Energy and Resources Group, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Biao Zhu
- Institute of Ecology and Ministry of Education Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China.
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47
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Chen W, Zhang W, Qiu Y, Shu Z, Liu JE, Zhang X, Waqas K, Song G. How does exotic Spartina alterniflora affect the contribution of iron-bound organic carbon to soil organic carbon in salt marshes? THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 926:171605. [PMID: 38461991 DOI: 10.1016/j.scitotenv.2024.171605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 02/29/2024] [Accepted: 03/07/2024] [Indexed: 03/12/2024]
Abstract
Iron-bound organic carbon (OC-FeR) is important for the stability of soil organic carbon (SOC) in salt marshes, and the Spartina alterniflora invasion reshaped local salt marshes and changed the SOC pool. To evaluate the effects of S. alterniflora invasion on the contribution of OC-FeR to SOC, we determined the OC-FeR content and soil characteristics in the 0-50 cm soil profile along the vegetation sequence, including mudflats (MF), S. alterniflora marshes established in 2003 (SA03) and 1989 (SA89), the ecotone of S. alterniflora and Phragmites australis (SE), S. salsa marsh (SS), and P. australis marsh (PA). The SOC content was 6.55-17.5 mg g-1 in the S. alterniflora marshes. Reactive iron oxides (Fed, Feo, Fep) accumulated significantly in the S. alterniflora and P. australis salt marshes. PA and S. alterniflora marshes had higher DOC contents of 0.28-0.77 mg g-1. The OC-FeR content in the 0-50 cm soil profile in these ecosystems ranged from 0.3 to 3.29 mg g-1, with a contribution to the SOC content (fOC-FeR) of approximately 11 %, which was highest in SA03 (16.3 % ~ 18.8 %), followed by SA89, SE, and PA. In addition, the molar ratios of OC-FeR to Fed were <1, indicating that the iron oxides were associated with SOC through sorption more than coprecipitation. According to the structural equation model, SOC, DOC and iron oxides were the direct driving factors of OC-FeR formation, while the vegetation zone indirectly functioned by regulating organic C inputs, iron oxide formation, and pH. This study suggested that S. alterniflora invasion promotes iron-bound organic carbon accumulation by increasing organic C inputs and regulating iron oxide formation in salt marshes, but such promotion will degenerate with development duration.
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Affiliation(s)
- Weixiang Chen
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, School of Environment, Nanjing Normal University, Nanjing 210023, PR China; Jiangsu Engineering Lab of Water and Soil Eco-remediation, 210023, PR China
| | - Weiting Zhang
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, School of Environment, Nanjing Normal University, Nanjing 210023, PR China; Jiangsu Engineering Lab of Water and Soil Eco-remediation, 210023, PR China
| | - Ying Qiu
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, School of Environment, Nanjing Normal University, Nanjing 210023, PR China; Jiangsu Engineering Lab of Water and Soil Eco-remediation, 210023, PR China
| | - Zihao Shu
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, School of Environment, Nanjing Normal University, Nanjing 210023, PR China; Jiangsu Engineering Lab of Water and Soil Eco-remediation, 210023, PR China
| | - Jin-E Liu
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, School of Environment, Nanjing Normal University, Nanjing 210023, PR China; Jiangsu Engineering Lab of Water and Soil Eco-remediation, 210023, PR China.
| | - Xinhou Zhang
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, School of Environment, Nanjing Normal University, Nanjing 210023, PR China; Jiangsu Engineering Lab of Water and Soil Eco-remediation, 210023, PR China.
| | - Khan Waqas
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, School of Environment, Nanjing Normal University, Nanjing 210023, PR China; Jiangsu Engineering Lab of Water and Soil Eco-remediation, 210023, PR China
| | - Ge Song
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, School of Environment, Nanjing Normal University, Nanjing 210023, PR China; Jiangsu Engineering Lab of Water and Soil Eco-remediation, 210023, PR China
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Yang G, Ma Y, Ma X, Wang X, Lu C, Xu W, Luo J, Guo D. Changes in soil organic carbon components and microbial community following spent mushroom substrate application. Front Microbiol 2024; 15:1351921. [PMID: 38827156 PMCID: PMC11140037 DOI: 10.3389/fmicb.2024.1351921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 05/03/2024] [Indexed: 06/04/2024] Open
Abstract
While spent mushroom substrate (SMS) has shown promise in increasing soil organic carbon (SOC) and improving soil quality, research on the interplay between SOC components and microbial community following the application of diverse SMS types remains scant. A laboratory soil incubation experiment was conducted with application of two types of SMSs from cultivation of Pleurotus eryngii (PE) and Agaricus bisporus (AB), each at three application rates (3, 5.5, and 8%). Advanced techniques, including solid-state 13C nuclear magnetic resonance (NMR) and high-throughput sequencing, were employed to investigate on SOC fractions and chemical structure, microbial community composition and functionality. Compared to SMS-AB, SMS-PE application increased the relative abundances of carbohydrate carbon and O-alkyl C in SOC. In addition, SMS-PE application increased the relative abundance of the bacterial phylum Proteobacteria and those of the fungal phyla Basidiomycota and Ascomycota. The relative abundances of cellulose-degrading bacterial (e.g., Flavisolibacter and Agromyces) and fungal genera (e.g., Myceliophthora, Thermomyces, and Conocybe) were increased as well. The application of SMS-AB increased the aromaticity index of SOC, the relative abundance of aromatic C, and the contents of humic acid and heavy fraction organic carbon. In addition, SMS-AB application significantly increased the relative abundances of the bacterial phyla Firmicutes and Actinobacteria. Notably, the genera Actinomadura, Ilumatobacter, and Bacillus, which were positively correlated with humic acid, experienced an increase in relative abundance. Functional prediction revealed that SMS-PE application elevated carbohydrate metabolism and reduced the prevalence of fungal pathogens, particularly Fusarium. The application of high-rate SMS-AB (8%) enhanced bacterial amino acid metabolism and the relative abundances of plant pathogenic fungi. Our research provides strategies for utilizing SMS to enrich soil organic carbon and fortify soil health, facilitating the achievement of sustainable soil management.
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Affiliation(s)
- Guiting Yang
- Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Yan Ma
- Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, China
- Key Laboratory of Saline-Alkali Soil Improvement and Utilization (Coastal Saline-Alkali Lands), Ministry of Agriculture and Rural Affairs, Nanjing, China
- National Agricultural Experiment Station for Agricultural Environment, Nanjing, China
| | - Xiaochi Ma
- Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Xuanqing Wang
- Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Chao Lu
- Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Wenyi Xu
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
| | - Jia Luo
- Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Dejie Guo
- Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, China
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Yang L, Wang C, He X, Liang H, Wu Q, Sun X, Liu M, Shen P. Multi-year crop rotation and quicklime application promote stable peanut yield and high nutrient-use efficiency by regulating soil nutrient availability and bacterial/fungal community. Front Microbiol 2024; 15:1367184. [PMID: 38827150 PMCID: PMC11140132 DOI: 10.3389/fmicb.2024.1367184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 05/06/2024] [Indexed: 06/04/2024] Open
Abstract
Diversifying cultivation management, including different crop rotation patterns and soil amendment, are effective strategies for alleviating the obstacles of continuous cropping in peanut (Arachis hypogaea L.). However, the peanut yield enhancement effect and temporal changes in soil chemical properties and microbial activities in response to differential multi-year crop rotation patterns and soil amendment remain unclear. In the present study, a multi-year localization experiment with the consecutive application of five different cultivation managements (including rotation with different crops under the presence or absence of external quicklime as soil amendment) was conducted to investigate the dynamic changes in peanut nutrient uptake and yield status, soil chemical property, microbial community composition and function. Peanut continuous cropping led to a reduction in peanut yield, while green manure-peanut rotation and wheat-maize-peanut rotation increased peanut yield by 40.59 and 81.95%, respectively. A combination of quicklime application increased yield by a further 28.76 and 24.34%. Alterations in cultivation management also strongly affected the soil pH, nutrient content, and composition and function of the microbial community. The fungal community was more sensitive than the bacterial community to cultivation pattern shift. Variation in bacterial community was mainly attributed to soil organic carbon, pH and calcium content, while variation in fungal community was more closely related to soil phosphorus content. Wheat-maize-peanut rotation combined with quicklime application effectively modifies the soil acidification environment, improves the soil fertility, reshapes the composition of beneficial and harmful microbial communities, thereby improving soil health, promoting peanut development, and alleviating peanut continuous cropping obstacles. We concluded that wheat-maize-peanut rotation in combination with quicklime application was the effective practice to improve the soil fertility and change the composition of potentially beneficial and pathogenic microbial communities in the soil, which is strongly beneficial for building a healthy soil micro-ecology, promoting the growth and development of peanut, and reducing the harm caused by continuous cropping obstacles to peanut.
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Affiliation(s)
- Liyu Yang
- Shandong Peanut Research Institute/Key Laboratory of Peanut Biology, Genetic & Breeding, Ministry of Agriculture and Rural Affairs, Shandong Academy of Agricultural Sciences, Qingdao, Shandong, China
| | - Caibin Wang
- Shandong Peanut Research Institute/Key Laboratory of Peanut Biology, Genetic & Breeding, Ministry of Agriculture and Rural Affairs, Shandong Academy of Agricultural Sciences, Qingdao, Shandong, China
| | - Xinhua He
- College of Resources and Environment, Southwest University, Chongqing, China
| | - Haiyan Liang
- Shandong Peanut Research Institute/Key Laboratory of Peanut Biology, Genetic & Breeding, Ministry of Agriculture and Rural Affairs, Shandong Academy of Agricultural Sciences, Qingdao, Shandong, China
| | - Qi Wu
- Shandong Peanut Research Institute/Key Laboratory of Peanut Biology, Genetic & Breeding, Ministry of Agriculture and Rural Affairs, Shandong Academy of Agricultural Sciences, Qingdao, Shandong, China
| | - Xuewu Sun
- Shandong Peanut Research Institute/Key Laboratory of Peanut Biology, Genetic & Breeding, Ministry of Agriculture and Rural Affairs, Shandong Academy of Agricultural Sciences, Qingdao, Shandong, China
| | - Miao Liu
- Shandong Peanut Research Institute/Key Laboratory of Peanut Biology, Genetic & Breeding, Ministry of Agriculture and Rural Affairs, Shandong Academy of Agricultural Sciences, Qingdao, Shandong, China
| | - Pu Shen
- Shandong Peanut Research Institute/Key Laboratory of Peanut Biology, Genetic & Breeding, Ministry of Agriculture and Rural Affairs, Shandong Academy of Agricultural Sciences, Qingdao, Shandong, China
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Zhao X, Tian P, Zhang W, Wang Q, Guo P, Wang Q. Nitrogen deposition caused higher increases in plant-derived organic carbon than microbial-derived organic carbon in forest soils. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 925:171752. [PMID: 38494032 DOI: 10.1016/j.scitotenv.2024.171752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 02/19/2024] [Accepted: 03/14/2024] [Indexed: 03/19/2024]
Abstract
Plant- and microbial-derived organic carbon, two components of the soil organic carbon (SOC) pool in terrestrial ecosystems, are regulated by increased atmospheric nitrogen (N) deposition. However, the spatial patterns and driving factors of the responses of plant- and microbial-derived SOC to N deposition in forests are not clear, which hinders our understanding of SOC sequestration. In this study, we explored the spatial patterns of plant- and microbial-derived SOC, and their responses to N addition and elucidated their underlying mechanisms in forest soils receiving N addition at four sites with various soil and climate conditions. Plant- and microbial-derived SOC were quantified using lignin phenols and amino sugars, respectively. N addition increased the total microbial residues by 20.5% on average ranging from 9.4% to 34.0% in temperate forests but not in tropical forests, and the increase was mainly derived from fungal residues. Lignin phenols increased more in temperate forests (average of 63.8%) than in tropical forests (average of 15.7%) following N addition. The ratio of total amino sugars to lignin phenols was higher in temperate forests than in tropical forests and decreased with N addition in temperate forests. N addition mainly regulated soil microbial residues by affecting pH, SOC, exchangeable Ca2+, gram-negative bacteria biomass, and the C:N ratio, while it mainly had indirect effects on lignin phenols by altering SOC, soil C:N ratio, and gram-negative bacteria biomass. Overall, our findings suggested that N deposition caused a greater increase in plant-derived SOC than in microbial-derived SOC and that plant-derived SOC would have a more important role in sequestering SOC under increasing N deposition in forest ecosystems, particularly in temperate forests.
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Affiliation(s)
- Xuechao Zhao
- Anhui Province Key Laboratory of Forest Resources and Silviculture, Anhui Agricultural University, Hefei 230036, China; Huitong Experimental Station of Forest Ecology, CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Shenyang 110016, China
| | - Peng Tian
- Anhui Province Key Laboratory of Forest Resources and Silviculture, Anhui Agricultural University, Hefei 230036, China
| | - Wei Zhang
- South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Qinggui Wang
- School of Life Sciences, Qufu Normal University, Qufu 273165, China
| | - Peng Guo
- Department of Chemical and Environmental Engineering, Hebei College of Industry and Technology, Shijiazhuang 050091, China
| | - Qingkui Wang
- Anhui Province Key Laboratory of Forest Resources and Silviculture, Anhui Agricultural University, Hefei 230036, China; Huitong Experimental Station of Forest Ecology, CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Shenyang 110016, China.
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