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Zhu X, Min K, Feng K, Xie H, He H, Zhang X, Deng Y, Liang C. Microbial necromass contribution to soil carbon storage via community assembly processes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 951:175749. [PMID: 39187085 DOI: 10.1016/j.scitotenv.2024.175749] [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: 07/16/2024] [Accepted: 08/22/2024] [Indexed: 08/28/2024]
Abstract
Soil organic matter has been well acknowledged as a natural solution to mitigate climate change and to maintain agricultural productivity. Microbial necromass is an important contributor to soil organic carbon (SOC) storage, and serves as a resource pool for microbial utilization. The trade-off between microbial births/deaths and resource acquisition might influence the fate of microbial necromass in the SOC pool, which remains poorly understood. We coupled soil microbial assembly with microbial necromass contribution to SOC on a long-term, no-till (NT) farm that received maize (Zea mays L.) stover mulching in amounts of 0 %, 33 %, 67 %, and 100 % for 8 y. We characterized soil microbial assembly using the Infer Community Assembly Mechanisms by Phylogenetic-bin-based null model (iCAMP), and microbial necromass using its biomarker amino sugars. We found that 100 % maize stover mulching (NT100) was associated with significantly lower amino sugars (66.4 mg g-1 SOC) than the other treatments (>70 mg g-1 SOC). Bacterial and fungal communities responded divergently to maize stover mulching: bacterial communities were positive for phylogenetic diversity, while fungal communities were positive for taxonomic richness. Soil bacterial communities influenced microbial necromass contribution to SOC through determinism on certain phylogenetic groups and bacterial bin composition, while fungal communities impacted SOC accumulation through taxonomic richness, which is enhanced by the positive contribution of dispersal limitation-dominated saprotrophic guilds. The prevalence of homogeneous selection and dispersal limitation on microbial cell wall-degrading bacteria, specifically Chitinophagaceae, along with increased soil fungal richness and interactions, might induce the decreased microbial necromass contribution to SOC under NT100. Our findings shed new light on the role of microbial assembly in shaping the dynamics of microbial necromass and SOC storage. This advances our understanding of the biological mechanisms that underpin microbial necromass associated with SOC storage, with implications for sustainable agriculture and mitigation of climate change.
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Affiliation(s)
- Xuefeng Zhu
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; Key Lab of Conservation Tillage and Ecological Agriculture, Liaoning Province, Shenyang 110016, China
| | - Kaikai Min
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; Key Lab of Conservation Tillage and Ecological Agriculture, Liaoning Province, Shenyang 110016, China
| | - Kai Feng
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Hongtu Xie
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; Key Lab of Conservation Tillage and Ecological Agriculture, Liaoning Province, Shenyang 110016, China
| | - Hongbo He
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; Key Lab of Conservation Tillage and Ecological Agriculture, Liaoning Province, Shenyang 110016, China
| | - Xudong Zhang
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; Key Lab of Conservation Tillage and Ecological Agriculture, Liaoning Province, Shenyang 110016, China
| | - Ye Deng
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Chao Liang
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; Key Lab of Conservation Tillage and Ecological Agriculture, Liaoning Province, Shenyang 110016, China.
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Ao D, Wang B, Wang Y, Chen Y, Anum R, Feng C, Ji M, Liang C, An S. Grassland degraded patchiness reduces microbial necromass content but increases contribution to soil organic carbon accumulation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 951:175717. [PMID: 39197785 DOI: 10.1016/j.scitotenv.2024.175717] [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: 06/03/2024] [Revised: 08/20/2024] [Accepted: 08/21/2024] [Indexed: 09/01/2024]
Abstract
Plant and microbially derived carbon (C) are the two major sources of soil organic carbon (SOC), and their ratio impacts SOC composition, accumulation, stability, and turnover. The contributions of and the key factors defining the plant and microbial C in SOC with grassland patches are not well known. Here, we aim to address this issue by analyzing lignin phenols, amino sugars, glomalin-related soil proteins (GRSP), enzyme activities, particulate organic carbon (POC), and mineral-associated organic carbon (MAOC). Shrubby patches showed increased SOC and POC due to higher plant inputs, thereby stimulating plant-derived C (e.g., lignin phenol) accumulation. While degraded and exposed patches exhibited higher microbially derived C due to reduced plant input. After grassland degradation, POC content decreased faster than MAOC, and plant biomarkers (lignin phenols) declined faster than microbial biomarkers (amino sugars). As grassland degradation intensified, microbial necromass C and GRSP (gelling agents) increased their contribution to SOC formation. Grassland degradation stimulated the stabilization of microbially derived C in the form of MAOC. Further analyses revealed that microorganisms have a C and P co-limitation, stimulating the recycling of necromass, resulting in the proportion of microbial necromass C in the SOC remaining essentially stable with grassland degradation. Overall, with the grassland degradation, the relative proportion of the plant component decreases while than of the microbial component increases and existed in the form of MAOC. This is attributed to the physical protection of SOC by GRSP cementation. Therefore, different sources of SOC should be considered in evaluating SOC responses to grassland degradation, which has important implications for predicting dynamics in SOC under climate change and anthropogenic factors.
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Affiliation(s)
- Deng Ao
- College of Nature Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Baorong Wang
- College of Grassland Agriculture, Northwest A&F University, Yangling 712100, China
| | - Yubin Wang
- College of Nature Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Yuanjia Chen
- Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, China
| | - Rafiq Anum
- Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, China
| | - Chenglong Feng
- Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, China
| | - Mukan Ji
- Center for Pan-third Pole Environment, Lanzhou University, Lanzhou 730000, China
| | - Chao Liang
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
| | - Shaoshan An
- College of Nature Resources and Environment, Northwest A&F University, Yangling 712100, China; Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, China.
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Zhang Y, Wang T, Yan C, Li Y, Mo F, Han J. Microbial life-history strategies and particulate organic carbon mediate formation of microbial necromass carbon and stabilization in response to biochar addition. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 950:175041. [PMID: 39079640 DOI: 10.1016/j.scitotenv.2024.175041] [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: 05/15/2024] [Revised: 07/20/2024] [Accepted: 07/23/2024] [Indexed: 08/10/2024]
Abstract
Microbial necromass carbon (MNC) contributes significantly to the formation of soil organic carbon (SOC). However, the microbial carbon sequestration effect of biochar is often underestimated and influenced by nutrient availability. The mechanisms associated with the formation and stabilization of MNC remain unclear, especially under the combined application of biochar and nitrogen (N) fertilizer. Thus, in a long-term field experiment (11 years) based on biochar application, we utilized bacterial 16S rRNA gene sequencing, fungal ITS amplicon sequencing, metagenomics, and microbial biomarkers to examine the interactions between MNC accumulation and microbial metabolic strategies under combined treatment with biochar and N fertilizer. We aimed to identify the critical microbial modules and species involved, and to analyze the sites where MNC was immobilized from various components. Biochar application increased the MNC content by 13.9 %. Among the MNC components, fungal necromass contributed more to MNC, but bacteria were more readily enriched after biochar application. The microbial life-history strategies that affected MNC formation under the application of various amounts biochar were linked to the N application level. Under N added at 226.5 kg ha-1, communities such as Actinobacteria and Bacteroidetes with high-growth yield strategies were prevalent and contributed to MNC production. By contrast, under N added at 113.25 kg ha-1 with high biochar application, Proteobacteria with strong resource acquisition strategies were dominant and MNC accumulation was lower. The mineral-associated organic carbon pool was rapidly saturated with the addition of biochar, so the contribution of fungal necromass carbon may have been reduced by reutilization, thereby resulting in the more rapid preservation of bacterial necromass carbon in the particulate organic carbon pool. Overall, our findings indicate that microbial life history traits are crucial for linking microbial metabolic processes to the accumulation and stabilization of MNC, thereby highlighting the their importance for SOC accumulation in farmland soils, and the need to tailor appropriate biochar and N fertilizer application strategies for agricultural soils.
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Affiliation(s)
- Yeye Zhang
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Tao Wang
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Chun Yan
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Yuze Li
- College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China
| | - Fei Mo
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Juan Han
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, 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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Liu D, Zhou Z, Iqbal S, Dou TT, Bonito G, Liu W, An S, Chater CCC, Perez-Moreno J, Che R, Jones DL, Yu F. Fungal necromass contribution to carbon sequestration in global croplands: A meta-analysis of driving factors and conservation practices. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 949:174954. [PMID: 39067597 DOI: 10.1016/j.scitotenv.2024.174954] [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: 03/15/2024] [Revised: 07/17/2024] [Accepted: 07/20/2024] [Indexed: 07/30/2024]
Abstract
Fungal necromass carbon (FNC) contributes significantly to the build-up of soil organic carbon (SOC) by supplying abundant recalcitrant polymeric melanin present in the fungal cell wall. However, the influence of a wide range of conservation practices and associated factors on FNC accumulation and contribution to SOC in global croplands remains unexplored. Here, a meta-analysis was performed using 873 observations across three continents, together with structural equation modeling, to evaluate conservation practices and factors responsible for the enhancement of FNC and SOC. FNC content (8.39 g kg-1) of North American soils was highest compared to FNC content of Asian and European soils. The structural equation models showed a significant (p < 0.05) positive influence of microbial biomass carbon (MBC), soil pH, and clay contents on the accumulation of FNC. Soil C/N ratio and climate factors, however, had only minor influences on FNC accumulation. Notably, the main driver of FNC was MBC, which is mainly influenced by the soil total N and geographic factors in the study areas. Typical 5 cropland practices had significant effect size (p < 0.05) on FNC, leading to an increase of 12 % to 26 %, and the FNC content was greatest under straw amendment (26 %). Fungal necromass accumulation efficiency ranged from 23 % to 45 % depending on cropland practices: non- and reduced tillage was the most efficient (45 %), followed by crop coverage (32 %), straw amendment (30 %), and manure application (27 %), while N fertilization had the lowest efficiency (23 %). We conclude that FNC contributes to over a quarter of SOC, highlighting its major role in enhancing C sequestration worldwide. Conservation practices, particularly non-tillage or reduced tillage, are important to enhance C sequestration from FNC in croplands.
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Affiliation(s)
- Dong Liu
- The Germplasm Bank of Wild Species & Yunnan Key Laboratory for Fungal Diversity and Green Development, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China.
| | - Ziyan Zhou
- The Germplasm Bank of Wild Species & Yunnan Key Laboratory for Fungal Diversity and Green Development, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China
| | - Shahid Iqbal
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; Centre for Mountain Futures (CMF), Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Ting Ting Dou
- School of Ecology and Environmental Science, Yunnan University, Kunming 650500, China
| | - Gregory Bonito
- Department of Plant, Molecular Plant Sciences Building, Michigan State University, 1066 Bogue St., East Lansing, MI 48824, USA
| | - Wei Liu
- The Germplasm Bank of Wild Species & Yunnan Key Laboratory for Fungal Diversity and Green Development, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China
| | - Shaoshan An
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, China
| | - Caspar C C Chater
- Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AE, UK; Plants, Photosynthesis, and Soil, School of Biosciences, University of Sheffield, Sheffield S10 2TN, UK
| | - Jesus Perez-Moreno
- Colegio de Postgraduados, Campus Montecillo, Edafologia, Texcoco 56230, Mexico
| | - Rongxiao Che
- Institute of International Rivers and Eco-security, Yunnan University, Kunming 650500, China
| | - Davey L Jones
- School of Environmental and Natural Sciences, Bangor University, Bangor, Gwynedd LL57 2UW, UK; SoilsWest, Centre for Sustainable Farming Systems, Food Futures Institute, Murdoch University, Perth, WA 6150, Australia
| | - Fuqiang Yu
- The Germplasm Bank of Wild Species & Yunnan Key Laboratory for Fungal Diversity and Green Development, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China.
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Zhang S, Xia Y, Chen X, Zhang Z, Zhang D, Li S, Qin Y, Chu Y, Wang Y, Wang F. Divergent contributions of microbes and plants to soil organic carbon in the drawdown area of a large reservoir: Impacts of periodic flooding and drying. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 370:122949. [PMID: 39418708 DOI: 10.1016/j.jenvman.2024.122949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2024] [Revised: 09/30/2024] [Accepted: 10/14/2024] [Indexed: 10/19/2024]
Abstract
The distribution patterns and accumulation mechanisms of plant and microbial residues, along with their potential contributions to soil organic carbon (SOC), remain subjects of considerable debate, particularly within drawdown areas affected by reservoir operation. In this study, surface soil samples (0-10 cm) were collected from three different elevations within the drawdown area of the Three Gorges Reservoir. Amino sugars and lignin phenols served as biomarkers for microbial residues and plant-derived materials, respectively. The results revealed that with increasing duration of flooding, the content of amino sugars increased from 0.26 mg g-1 to 0.64 mg g-1, whereas the content of lignin phenols decreased from 204.09 mg kg-1 to 37.93 mg kg-1. Moreover, as the duration of flooding increased, the contribution of microbial necromass carbon (MNC) to SOC rose from 29% to 47%, while the contribution of plant-derived carbon to SOC gradually declined. Plants biomass and iron minerals influenced the accumulation of lignin phenols, whereas amino sugars were affected by plants biomass, microbial biomass carbon and nitrogen, and clay minerals. The periodic flooding and drying events induced alterations in carbon inputs and environmental characteristics within the drawdown area, resulting in fluctuations in the contributions of plants and MNC to SOC in this region. The findings of this study highlight the critical role played by both plant- and microbial-derived carbon in the retention and turnover of SOC within the terrestrial-aquatic transition zone.
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Affiliation(s)
- Shengman Zhang
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China; College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Institute of Carbon Neutrality, Tongji University, Shanghai, 200092, China
| | - Yue Xia
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Xueping Chen
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Ziyuan Zhang
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Dong Zhang
- College of Oceanography and Ecological Science, Shanghai Ocean University, Shanghai, 201306, China
| | - Shanze Li
- China Institute of Water Resources and Hydropower Research, Beijing, 100038, China
| | - Yong Qin
- China Institute of Water Resources and Hydropower Research, Beijing, 100038, China
| | - Yongsheng Chu
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Yuchun Wang
- China Institute of Water Resources and Hydropower Research, Beijing, 100038, China.
| | - Fushun Wang
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China.
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Niu Y, Ma X, Liang J. Characterization of organic materials in regulating soil carbon sequestration of urban greenspaces: Links to microbial necromass and community composition. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 370:122894. [PMID: 39413633 DOI: 10.1016/j.jenvman.2024.122894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2024] [Revised: 10/08/2024] [Accepted: 10/09/2024] [Indexed: 10/18/2024]
Abstract
Application of organic material is a win-win strategy that effectively boosts soil carbon (C) storage and promotes organic waste recycling in urban ecosystems. However, the divergent responses of C sequestration to organic materials and the underlying mechanisms remain unclear. Using molecular and litterbag methods, this study examined soil organic C (SOC) content, C sequestration efficiency of organic material (CSE-organic material), microbial necromass and community composition in urban greenspaces amended with different types of organic materials. The field experiment had seven treatments: addition of green waste (GreenWaste), green waste compost (GreenWasteCompost), biogas residue (BiogasResidue), biogas residue compost (BiogasResidueCompost), peat (PEAT), biochar (BioChar), and no organic material (Control). Organic materials after 16 months application increased SOC content by 34.1-87.0% compared with the Control and presented CSE-organic material in the order: BioChar > GreenWasteCompost > PEAT > BiogasResidueCompost > GreenWaste > BiogasResidue. Aromaticity index was positively correlated with CSE-organic material, indicating that aromatic C addition had a strong capacity to enhance C sequestration. Microbial necromass increased from 2.7 g C kg-1 in the Control to 3.9-5.0 g C kg-1 under organic materials addition. Bacterial necromass was enriched in the BiogasResidue and BiogasResidueCompost treatments, primarily because of sufficient substrate that facilitated the proliferation and activity of copiotrophic Firmicutes, whereas fungal necromass was 8.8-19.1% higher in the GreenWaste, GreenWasteCompost, and PEAT treatments than that in the BiogasResidue and BiogasResidueCompost treatments, accompanying by an increasing abundance of Ascomycota. However, the contribution of microbial necromass to the increased SOC was negatively correlated with CSE-organic material, suggesting that the input of recalcitrant C weakened the role of microbial necromass in C retention. Overall, this study reveals that the efficiency of organic materials application in promoting soil C accumulation depends largely on recalcitrant C rather than microbial necromass, which highlights the important role of organic waste acting as a C source in achieving urban sustainable development.
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Affiliation(s)
- Yuhui Niu
- Shanghai Academy of Landscape Architecture Science and Planning, Shanghai, 200232, China; Shanghai Engineering Research Center of Landscaping on Challenging Urban Sites, Shanghai, 200232, China
| | - Xiang Ma
- Shanghai Academy of Landscape Architecture Science and Planning, Shanghai, 200232, China; Shanghai Engineering Research Center of Landscaping on Challenging Urban Sites, Shanghai, 200232, China
| | - Jing Liang
- Shanghai Academy of Landscape Architecture Science and Planning, Shanghai, 200232, China; Shanghai Engineering Research Center of Landscaping on Challenging Urban Sites, Shanghai, 200232, China.
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Zhang W, Song Y, Ma S, Lu J, Zhu J, Wang J, Li X. Rice-crayfish farming system promote subsoil microbial residual carbon accumulation and stabilization by mediating microbial metabolism process. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 946:174188. [PMID: 38925393 DOI: 10.1016/j.scitotenv.2024.174188] [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: 03/29/2024] [Revised: 06/20/2024] [Accepted: 06/20/2024] [Indexed: 06/28/2024]
Abstract
Rice-crayfish farming systems (RCs) can help mitigate climate change by enhancing soil organic carbon (SOC) sequestration. However, the mechanisms that govern the responses of microbial residues carbon (MRC), a key component of SOC, in RCs are not fully understood. We conducted a 6-year field experiment comparing RCs and rice monoculture systems (RMs). Specifically, we explored how MRC formation and stabilization differ between the two systems and how those differences are linked to changes in the metabolic processes of microbes. Results showed that MRC levels in RCs were 5.2 % and 40.0 % higher in the topsoil and subsoil, respectively, compared to RMs, indicating depth-dependent effects. Notably, MRC accumulation and stabilization in RCs were promoted through a cascade of processes of dissolved organic carbon (DOC) accessibility-microbial metabolism-mineral protection. In addition, the mechanism of MRC accumulation in subsoil differed between the two systems. Specifically, RMs improved accessibility of DOC by reducing humification and aromaticity of subsoil DOC, which helped microbes access to resources at lower cost. This decreased the respiration rate of microbes, thereby increasing microbial carbon pump (MCP) efficiency and thus promoting MRC accumulation. By contrast, the crayfish in RCs facilitated carbon exchange between topsoil and subsoil through their burrowing behaviors. This increased carbon allocation for microbial metabolism in the subsoil, supporting a larger microbial population and thus enhancing the MCP capacity, while reducing MRC re-decomposition via enhanced mineral protection, further increasing subsoil MRC accumulation. That is, MRC accumulation in the subsoil of RCs was predominantly driven by microbial population numbers (MCP capacity) whereas that of RMs was mostly driven by microbial anabolic efficacy (MCP efficiency). Our findings reveal a key mechanism by which RCs promoted soil MRC accumulation and stabilization, highlighting the potential role of DOC accessibility-microbial metabolism-mineral protection pathway in regulating MRC accumulation and stabilization.
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Affiliation(s)
- Wanyang Zhang
- College of Resources and Environment, Huazhong Agricultural University/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs/Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China
| | - Yi Song
- College of Resources and Environment, Huazhong Agricultural University/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs/Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China
| | - Shihao Ma
- College of Resources and Environment, Huazhong Agricultural University/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs/Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China
| | - Jianwei Lu
- College of Resources and Environment, Huazhong Agricultural University/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs/Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China
| | - Jun Zhu
- College of Resources and Environment, Huazhong Agricultural University/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs/Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China
| | - Jinping Wang
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Shuangshui Shuanglv Institute, Huazhong Agricultural University, Wuhan 430070, China
| | - Xiaokun Li
- College of Resources and Environment, Huazhong Agricultural University/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs/Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China; Shuangshui Shuanglv Institute, Huazhong Agricultural University, Wuhan 430070, China.
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9
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Zhou F, Jiang Y, Han C, Deng H, Dai Z, Wang Z, Zhong W. Ensemble learning algorithms to elucidate the core microbiome's impact on carbon content and degradation properties at the soil aggregate level. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 946:174528. [PMID: 38971243 DOI: 10.1016/j.scitotenv.2024.174528] [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: 02/14/2024] [Revised: 06/10/2024] [Accepted: 07/03/2024] [Indexed: 07/08/2024]
Abstract
Soil aggregates are crucial for soil organic carbon (OC) accumulation. This study, utilizing a 32-year fertilization experiment, investigates whether the core microbiome can elucidate variations in carbon content and decomposition across different aggregate sizes more effectively than broader bacterial and fungal community analyses. Employing ensemble learning algorithms that integrate machine learning with network inference, we found that the core microbiome accounts for an average increase of 26 % and 20 % in the explained variance of PCoA and Adonis analyses, respectively, in response to fertilization. Compared to the control, inorganic and organic fertilizers decreased the decomposition index (DDI) by 31 % and 38 %, respectively. The fungal core microbiome predominantly influenced OC content and DDI in larger macroaggregates (>2000 μm), explaining over 35 % of the variance, while the bacterial core microbiome had a lesser impact, explaining <30 %. Conversely, in smaller aggregates (<2000 μm), the bacterial core microbiome significantly influenced DDI (R2 > 0.2), and the fungal core microbiome more strongly affected OC content (R2 > 0.3). Mantel tests showed that pH is the most significant environmental factor affecting core microbiome composition across all aggregate sizes (Mantel's r > 0.8, P < 0.01). Linear correlation analysis further confirmed that the core microbiome's community structure could accurately predict OC content and DDI in aggregates (R2 > 0.8, P < 0.05). Overall, our findings suggested that the core microbiome provides deeper insights into the variability of aggregate organic carbon content and decomposition, with the bacterial core microbiome playing a particularly pivotal role within the soil aggregates.
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Affiliation(s)
- Fengwu Zhou
- Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, School of Geography, Nanjing Normal University, Nanjing 210023, China
| | - Yunbin Jiang
- Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, School of Geography, Nanjing Normal University, Nanjing 210023, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China
| | - Cheng Han
- Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, School of Geography, Nanjing Normal University, Nanjing 210023, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China
| | - Huan Deng
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China
| | - Zongren Dai
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Zimeng Wang
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.
| | - Wenhui Zhong
- Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, School of Geography, Nanjing Normal University, Nanjing 210023, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China.
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10
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Zhou J, Bilyera N, Guillaume T, Yang H, Li FM, Shi L. Microbial necromass and glycoproteins for determining soil carbon formation under arbuscular mycorrhiza symbiosis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 955:176732. [PMID: 39395500 DOI: 10.1016/j.scitotenv.2024.176732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2024] [Revised: 09/21/2024] [Accepted: 10/02/2024] [Indexed: 10/14/2024]
Abstract
Arbuscular mycorrhizal fungi (AMF) form symbioses with most terrestrial plants and critically modulate soil organic carbon (C) dynamics. Whether AMF promote soil C storage and stability is, however, largely unknown. Since microbial necromass C (MNC) and glomalin-related soil protein (GRSP) are stable microbial-derived C in soils, we therefore evaluated how AMF symbiosis alters both soil C pools and their contributions to soil organic C (SOC) under nitrogen fertilization, based on a 16-weeks mesocosm experiment using a mutant tomato with highly reduced AMF symbiosis. Results showed that SOC content is 4.5 % higher following AMF symbiosis. Additionally, the content of MNC and total GRSP were 47.5 % and 22.3 % higher under AMF symbiosis than at AMF absence, respectively. The accumulations of GRSP and microbial necromass in soil were closely associated with mineral-associated organic C and the abundance of AMF. The increased soil living microbial biomass under AMF symbiosis was mainly derived from AMF biomass, and fungal necromass C significantly contributed to SOC accumulation, as evidenced by the higher fungal:bacterial necromass C ratio under AMF symbiosis. On the contrary, bacterial necromass was degraded to compensate for the increased microbial nutrient demand because of the aggravated nutrient limitation under AMF symbiosis, leading to a decrease in bacterial necromass. Redundancy analysis showing that bacterial necromass was negatively correlated with soil C:N ratio supported this argument. Moreover, the relative change rate of total GRSP was consistently greater in nitrogen-limited soil than that of microbial necromass. Our findings suggested GRSP accumulates faster and contributes more to SOC pools under AMF symbiosis than microbial necromass. The positive correlation between the contributions of GRSP and MNC to SOC further provided valuable information in terms of enhancing our understanding of mechanisms underlying the maintenance of SOC stocks through microbial-derived C.
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Affiliation(s)
- Jie Zhou
- Collaborative Innovation Center for Modern Crop Production co-sponsored by Province and Ministry, College of Agriculture, Nanjing Agricultural University, Nanjing, China.
| | - Nataliya Bilyera
- Geo-Biosphere Interactions, Department of Geosciences, Faculty of Sciences, University of Tuebingen, Tuebingen, Germany
| | - Thomas Guillaume
- Agroscope, Field-Crop Systems and Plant Nutrition, Research Division Plant Production Systems, Nyon, Switzerland
| | - Haishui Yang
- Collaborative Innovation Center for Modern Crop Production co-sponsored by Province and Ministry, College of Agriculture, Nanjing Agricultural University, Nanjing, China.
| | - Feng-Min Li
- Collaborative Innovation Center for Modern Crop Production co-sponsored by Province and Ministry, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Lingling Shi
- Geo-Biosphere Interactions, Department of Geosciences, Faculty of Sciences, University of Tuebingen, Tuebingen, Germany
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11
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Yuan X, Qi Y, Guo Y, Dong Y, Peng Q, Yan Z, Li Z, Dong R, Zheng Y. Effect of 9-year water and nitrogen additions on microbial necromass carbon content at different soil depths and its main influencing factors. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 954:176825. [PMID: 39389128 DOI: 10.1016/j.scitotenv.2024.176825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 09/17/2024] [Accepted: 10/07/2024] [Indexed: 10/12/2024]
Abstract
Microbial necromass carbon (MNC) is a major source of soil organic carbon (SOC) pool, significantly influencing soil carbon sequestration. The effects of long-term water and nitrogen addition on MNC in soils at different depths, as well as their interactions, remain poorly understood. In this study, we examined the influence of water addition (+51.67 mm), nitrogen addition (25, 50, 100 kg N ha-1 yr-1), and their interactions on MNC accumulation at different soil depths in temperate grasslands. The addition of water and nitrogen over nine years has been observed to exhibit a decreasing trend in the MNC at different soil depths. Notably, MNC in the topsoil layer (0-10 cm) decreased significantly by 18.56 % under low nitrogen addition treatment, while MNC in the subsoil layer (40-60 cm) declined significantly by 27.19 % under high nitrogen addition treatment. Fungal microbial necromass carbon (FNC) contributed 3.25 times more to SOC than bacterial microbial necromass carbon (BNC). In the 0-10 cm soil layer, MNC is primarily governed by both microbial attributes and the physicochemical properties of the soil, in the 20-40 cm soil layer, the physicochemical properties of the soil predominantly control MNC, in the 40-60 cm layer, microbial characteristics exert a more significant influence on MNC. Collectively, our observations suggest that soil MNC decreased with the addition of water and nitrogen in the 0-60 cm soil slope, which could enable the accurate prediction of global change impacts on the accumulation of soil carbon, thus facilitating the implementation of strategies to augment soil carbon sequestration.
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Affiliation(s)
- Xiujin Yuan
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuchun Qi
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Yu Guo
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Yunshe Dong
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Qin Peng
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
| | - Zhongqing Yan
- Wetland Research Center, Institute of Ecological Conservation and Restoration, Chinese Academy of Forestry, Beijing 100091, China
| | - Zhaolin Li
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 10085, China
| | - Ruyue Dong
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yilian Zheng
- University of Chinese Academy of Sciences, Beijing 100049, China
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12
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Zhou J, Liu Y, Liu C, Zamanian K, Feng W, Steiner SK, Shi L, Guillaume T, Kumar A. Necromass responses to warming: A faster microbial turnover in favor of soil carbon stabilisation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 954:176651. [PMID: 39370006 DOI: 10.1016/j.scitotenv.2024.176651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2024] [Revised: 08/21/2024] [Accepted: 09/30/2024] [Indexed: 10/08/2024]
Abstract
Microbial byproducts and residues (hereafter 'necromass') potentially play the most critical role in soil organic carbon (SOC) sequestration. However, little is known about the influence of climate warming on necromass accumulation in the agroecosystem and the underlying mechanisms associated with microbial life strategies. In order to address these knowledge gaps, we used amino sugars as biomarkers of microbial necromass, and investigated their variation through an 8-year trial in an agroecosystem with two warming levels (+1.6 and + 3.2 °C) compared to ambient temperature. The results showed that the lower warming level had no impact on total microbial necromass carbon. Conversely, warming the soil 3.2 °C above ambient increased total microbial necromass by 17 % and its contribution to SOC by 21.3 %, mainly by increasing fungal necromass (+19.8 %), whereas +3.2 °C warming had no impact on bacterial necromass. At the phylum level, compared with the ambient control, +3.2 °C warming induced an increase in the abundance of Proteobacteria and a decrease in both Acidobacteria and Actinobacteria, whereas in the fungal community, Ascomycota increased and Mortierellomycota decreased. This indicates that r-strategists outcompete K-strategists in warmer climates, which led to increased microbial necromass production and accumulation, as supported by the positive correlation between r-strategists and microbial necromass. Stronger microbial competition for resources also resulted in a higher biomass turnover rate, greater cell death, and greater production of microbial necromass. This was supported by the lower bacterial and fungal network complexity and trophic links under warming conditions. In addition, the necromass generated from accelerated microbial turnover further offsets warming-induced deceases in microbial biomass. Consequently, bulk SOC did not change, despite microbial necromass having a much greater response to warming than the soil C pool. Therefore, future climate warming may influence the composition and persistence of SOC during microbial degradation.
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Affiliation(s)
- Jie Zhou
- College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China.
| | - Yuan Liu
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, USA
| | - Chunyan Liu
- Nanjing Institute of Agricultural Sciences in Jiangsu Hilly Area, Nanjing 210046, China
| | - Kazem Zamanian
- Institute of Soil Science, Leibniz University of Hanover, 30419 Hanover, Germany
| | - Wenhao Feng
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Samuel K Steiner
- Agroscope, Field-Crop Systems and Plant Nutrition, Research Division Plant Production Systems, Nyon, Switzerland
| | - Lingling Shi
- Geo-Biosphere Interactions, Department of Geosciences, Faculty of Sciences, University of Tuebingen, Tuebingen, Germany.
| | - Thomas Guillaume
- Agroscope, Field-Crop Systems and Plant Nutrition, Research Division Plant Production Systems, Nyon, Switzerland
| | - Amit Kumar
- Department of Biology, College of Science, United Arab Emirates University, Al Ain, United Arab Emirates
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13
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Zhang W, Ma T, Lu J, Zhu J, Ren T, Cong R, Lu Z, Zhang Y, Li X. Long-term rice-crayfish farming alters soil dissolved organic carbon quality and biodegradability by regulating microbial metabolism and iron oxidation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 370:122777. [PMID: 39368381 DOI: 10.1016/j.jenvman.2024.122777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 06/23/2024] [Accepted: 09/29/2024] [Indexed: 10/07/2024]
Abstract
The biodegradability of dissolved organic carbon (DOC) is a crucial process in the migration and transformation of soil organic carbon (SOC), and play a vital role in the global soil carbon (C) cycle. Although the significance of DOC in SOC transportation and microbial utilization is widely acknowledged, the impact of long-term rice-crayfish (RC) farming on the content, quality, and biodegradability of DOC in paddy soils, as well as regulatory mechanisms involved, remains unclear. To address this gap, a space-for-time method was employed to investigate the effects of different RC farming durations (1-, 5-, 10-, 15-, and 20- years) on the quality and biodegradability of DOC, as well as their relationship with soil microbial metabolism and minerals in this study. The results revealed that continuous RC farming increased the soil DOC content, but reduced DOC biodegradability. Specifically, after 20 years of continuous RC farming, the DOC content increased by 52.7% compared to the initial year, whereas the DOC biodegradability decreased by 63.4%. Analysis using three-dimensional fluorescence and ultraviolet spectroscopy demonstrated that continuous RC farming resulted in a decrease in the relative abundance of humus-like fractions, humification, and aromaticity indexes in DOC, but increased the relative abundance of protein-like fractions, biological, and fluorescence index, indicating that long-term RC farming promoted the simple depolymerization of the molecular structure of DOC. Continuous RC farming increased the activity of hydrolase involved in soil nitrogen (N) and phosphorus (P) cycles and oxidase, but decreasing the hydrolase C/N and C/P acquisition ratios; moreover, it also stimulated an increase in soil iron oxides and exchangeable calcium content. Structural equation modeling suggests that soil hydrolases and iron oxides are the primary drivers of DOC quality change, with DOC biodegradability being driven solely by soil iron oxides and not regulated by DOC quality. In conclusion, long-term RC farming promotes the catalytic decomposition of DOC aromatic substances and the production of DOC protein-like components by increasing soil oxidase activity and decreasing the hydrolase C/N acquisition ratio; these processes collectively contribute to the simple depolymerization of DOC molecular structure. Additionally, long-term RC farming induced legacy effects of soil iron oxides and enhanced chemical protection role leading to reduced DOC biodegradability. These findings suggested that long-term RC farming may reduce the rapid turnover and loss of DOC, providing a negative feedback on climate warming.
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Affiliation(s)
- Wanyang Zhang
- College of Resources and Environment, Huazhong Agricultural University/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs/Microelement Research Center, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Tianqiao Ma
- College of Resources and Environment, Huazhong Agricultural University/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs/Microelement Research Center, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Jianwei Lu
- College of Resources and Environment, Huazhong Agricultural University/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs/Microelement Research Center, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Jun Zhu
- College of Resources and Environment, Huazhong Agricultural University/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs/Microelement Research Center, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Tao Ren
- College of Resources and Environment, Huazhong Agricultural University/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs/Microelement Research Center, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Rihuan Cong
- College of Resources and Environment, Huazhong Agricultural University/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs/Microelement Research Center, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Zhifeng Lu
- College of Resources and Environment, Huazhong Agricultural University/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs/Microelement Research Center, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Yangyang Zhang
- College of Resources and Environment, Huazhong Agricultural University/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs/Microelement Research Center, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Xiaokun Li
- College of Resources and Environment, Huazhong Agricultural University/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs/Microelement Research Center, Huazhong Agricultural University, Wuhan, 430070, China; Shuangshui Shuanglv Institute, Huazhong Agricultural University, Wuhan, 430070, China.
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14
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Yu H, Liu H, Yang K, Xi B, Tan W. Differential carbon accumulation of microbial necromass and plant lignin by pollution of polyethylene and polylactic acid microplastics in soil. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 358:124504. [PMID: 38968987 DOI: 10.1016/j.envpol.2024.124504] [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: 05/06/2024] [Revised: 07/01/2024] [Accepted: 07/02/2024] [Indexed: 07/07/2024]
Abstract
The wide microplastics (MPs) occurrence affects soil physicochemical and biological properties, thereby influencing its carbon cycling and storage. However, the regulation effect of MPs on soil organic carbon (SOC) formation and stabilization remains unclear, hindering the accurate prediction of carbon sequestration in future global changes under continuous MP pollution. Phospholipid fatty acids, amino sugars and lignin phenols were used in this study as biomarkers for microbial community composition, microbial necromass and plant lignin components, respectively, and their responses to conventional (polyethylene; PE) and biodegradable (polylactic acid; PLA) MPs were explored. Results showed PLA MPs had positive effects on soil microbial biomass, while the positive and negative effects of PE MPs on microbial biomass varied with MP concentration. PE and PLA MPs increased microbial necromass contents and their contribution to SOC, mainly due to the increase in fungal necromass. On the contrary, PE and PLA MPs reduced lignin phenols and their contribution to SOC, mainly owing to the reduction in vanillyl-type phenols. The response of microbial necromass to PLA MPs was higher than that to PE MPs, whereas the response of lignin phenols was the opposite. MPs increased SOC level, with 83%-200% and 50%-75% of additional SOC in PE and PLA treatments, respectively, originating from microbial necromass carbon. This finding indicates that the increase in SOC pool in the presence of MPs can be attributed to soil microbial necromass carbon, and MPs increased capacity and efficacy of microbial carbon pump by increasing microbial turnover and reducing microbial N limitation. Moreover, the increase in amino sugars to lignin phenols ratio in PE treatment was higher than that in PLA treatment, and the increase in SOC content in PLA treatment was higher than that in PE treatment, indicating a high possibility of SOC storage owing to PLA MPs.
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Affiliation(s)
- Hong Yu
- State Key Laboratory of Environmental Criteria and Risk Assessment, and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; School of Resources and Environment Engineering, Mianyang Teachers' College, Mianyang, 621000, China; School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China.
| | - Haixia Liu
- School of Resources and Environment Engineering, Mianyang Teachers' College, Mianyang, 621000, China
| | - Ke Yang
- State Key Laboratory of Environmental Criteria and Risk Assessment, and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| | - Beidou Xi
- State Key Laboratory of Environmental Criteria and Risk Assessment, and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Wenbing Tan
- State Key Laboratory of Environmental Criteria and Risk Assessment, and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
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15
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Jia P, Huang Y, Zhang H, Huang Q, Chen J, Feng L, Tuo Y, Yuan L, Xie J. Variation of microbial necromass carbon and its potential relationship with humification during composting of chicken manure with and without biochar addition. BIORESOURCE TECHNOLOGY 2024; 409:131258. [PMID: 39134245 DOI: 10.1016/j.biortech.2024.131258] [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: 03/26/2024] [Revised: 07/25/2024] [Accepted: 08/09/2024] [Indexed: 08/16/2024]
Abstract
Microbial necromass carbon (MNC) is an important stable organic C component. However, the variation of MNC and its potential relationship with humus components in composting remains uncertain. During a 45-day chicken manure composting study with and without biochar, MNC ranged from 24.9 to 77.9 g/kg and increased significantly by 80.9 % to 133 %. MNC constituted 5.77 % to 21.3 % of total organic C, with bacterial/fungal necromass C ratio ranging from 0.82 to 1.78. The MNC/humus C ratio ranged from 0.15 to 0.55, and humic acid C showed significant positive associations with bacterial necromass C (R2 = 0.72) and fungal necromass C (R2 = 0.51). Biochar addition reduced electrical conductivity and moisture content, increased pH, and induced microbial phosphorus limitation, thereby enhancing MNC content by 29.2 % and promoting humification. Our study is the first to elucidate the relationship between microbial necromass and humus substances, providing fundamental data for advancing the microbial carbon pump theory in composting.
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Affiliation(s)
- Penghui Jia
- Key Laboratory of Plant Nutrition and The Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, 712100 Shaanxi, China
| | - Yimei Huang
- Key Laboratory of Plant Nutrition and The Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, 712100 Shaanxi, China.
| | - Haixin Zhang
- Key Laboratory of Plant Nutrition and The Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, 712100 Shaanxi, China
| | - Qian Huang
- Key Laboratory of Plant Nutrition and The Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, 712100 Shaanxi, China
| | - Jinmei Chen
- Key Laboratory of Plant Nutrition and The Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, 712100 Shaanxi, China
| | - Lijing Feng
- Key Laboratory of Plant Nutrition and The Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, 712100 Shaanxi, China
| | - Ying Tuo
- Key Laboratory of Plant Nutrition and The Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, 712100 Shaanxi, China
| | - Longyu Yuan
- Key Laboratory of Plant Nutrition and The Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, 712100 Shaanxi, China
| | - Jinyi Xie
- Key Laboratory of Plant Nutrition and The Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, 712100 Shaanxi, China
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16
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Chen L, Zhou G, Feng B, Wang C, Luo Y, Li F, Shen C, Ma D, Zhang C, Zhang J. Saline-alkali land reclamation boosts topsoil carbon storage by preferentially accumulating plant-derived carbon. Sci Bull (Beijing) 2024; 69:2948-2958. [PMID: 38910109 DOI: 10.1016/j.scib.2024.03.063] [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: 10/17/2023] [Revised: 03/21/2024] [Accepted: 03/22/2024] [Indexed: 06/25/2024]
Abstract
Saline-alkali land is an important cultivated land reserve resource for tackling global climate change and ensuring food security, partly because it can store large amounts of carbon (C). However, it is unclear how saline-alkali land reclamation (converting saline-alkali land into cultivated land) affects soil C storage. We collected 189 adjacent pairs of salt-affected and cultivated soil samples (0-30 cm deep) from the Songnen Plain, eastern coastal area, Hetao Plain, and northwestern arid area in China. Various soil properties, the soil inorganic C (SIC), organic C (SOC), particulate organic C (POC), and mineral-associated organic C (MAOC) densities, and plant- and microbial-derived C accumulation were determined. Saline-alkali land reclamation inconsistently affected the SIC density but significantly (P < 0.001) increased the SOC density. The SOC, POC, and MAOC densities were predicted well by the integrative soil amelioration index. Saline-alkali land reclamation significantly increased plant-derived C accumulation and the plant-derived C to microbial-derived C ratios in all saline-alkali areas, and less microbial transformation of plant-derived C (i.e., less lignin degradation or oxidation) occurred in cultivated soils than salt-affected soils. The results indicated that saline-alkali land reclamation leads to plant-derived C becoming the dominant contributor of SOC storage. POC storage and MAOC storage were strongly linked to plant- and microbial-derived C accumulation, respectively, caused by saline-alkali land reclamation. Our findings suggest that saline-alkali land reclamation increases C storage in topsoil by preferentially promoting plant-derived C accumulation.
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Affiliation(s)
- Lin Chen
- State Key Laboratory of Soil and Sustainable Agriculture, Fengqiu Experimental Station of National Ecosystem Research Network of China, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 211135, China
| | - Guixiang Zhou
- State Key Laboratory of Soil and Sustainable Agriculture, Fengqiu Experimental Station of National Ecosystem Research Network of China, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 211135, China
| | - Biao Feng
- State Key Laboratory of Soil and Sustainable Agriculture, Fengqiu Experimental Station of National Ecosystem Research Network of China, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 211135, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chao Wang
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
| | - Yu Luo
- Institute of Soil and Water Resources and Environmental Science, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou 310058, China
| | - Fang Li
- College of Resources and Environment, Henan Agricultural University, Zhengzhou 450002, China
| | - Congcong Shen
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Donghao Ma
- State Key Laboratory of Soil and Sustainable Agriculture, Fengqiu Experimental Station of National Ecosystem Research Network of China, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 211135, China
| | - Congzhi Zhang
- State Key Laboratory of Soil and Sustainable Agriculture, Fengqiu Experimental Station of National Ecosystem Research Network of China, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 211135, China
| | - Jiabao Zhang
- State Key Laboratory of Soil and Sustainable Agriculture, Fengqiu Experimental Station of National Ecosystem Research Network of China, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 211135, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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Wang Q, Liu M, Huang J, Han C, Jiang Y, Deng H, Liu K, Zhong W. Organic manure rather than chemical fertilization improved dark CO 2 fixation by regulating associated microbial functional traits in upland red soils. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 954:176337. [PMID: 39304154 DOI: 10.1016/j.scitotenv.2024.176337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Revised: 09/03/2024] [Accepted: 09/15/2024] [Indexed: 09/22/2024]
Abstract
Dark microbial fixation of CO2 is an indispensable process for soil carbon sequestration. However, the whole genetic information involved in dark CO2 fixation and its influence on dark CO2 fixation rates under diversified fertilization regimes were largely unclear. Here, revealed by 13C-CO2 labeling, dark CO2 fixation rates in upland red soils ranged from 0.029 mg kg-1 d-1 to 0.092 mg kg-1 d-1, and it was 75.49 % higher (P < 0.05) in organic manure (OM) soil but 44.2 % decline (P < 0.05) in chemical nitrogen fertilizer (N) soil compared to unfertilized (CK) soil. In addition, the normalized abundance and Chao1 index of dark CO2 fixation genes (KO level) were significantly different between OM and N soils, showing the highest and lowest, respectively. And they were positively (P < 0.05) correlated with dark CO2 fixation rate. Besides, among the identified CO2 fixation pathways in this study, the DC/4-HB cycle (M00374) was enriched in OM soil, yet the 3-HP cycle (M00376) was enriched in N soil, and their relative abundances were positively and negatively correlated (P < 0.05) with dark CO2 fixation rate, respectively. The PLS-SEM analysis revealed that dark CO2 fixation-related functional traits (i.e. normalized abundance, Chao1 index and gene composition) were directly and positively associated with dark CO2 fixation rate, and organic manure could exert a positive effect on soil dark CO2 fixation rate through enhancing soil properties (e.g., pH and soil organic carbon) and further altering associated microbial functional traits. These results have implications for explaining and predicting the soil CO2 fixation process from the perspective of microbial functional potential.
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Affiliation(s)
- Qian Wang
- Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, School of Geographical Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Mengmeng Liu
- Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, School of Geographical Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Jingshi Huang
- Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, School of Geographical Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Cheng Han
- Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, School of Geographical Sciences, Nanjing Normal University, Nanjing 210023, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China; Jiangsu Engineering Research Center for Soil Utilization & Sustainable Agriculture, Nanjing 210023, China.
| | - Yunbin Jiang
- Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, School of Geographical Sciences, Nanjing Normal University, Nanjing 210023, China; Jiangsu Engineering Research Center for Soil Utilization & Sustainable Agriculture, Nanjing 210023, China
| | - Huan Deng
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China; School of Environment, Nanjing Normal University, Nanjing 210023, China
| | - Kailou Liu
- Jiangxi Institute of Red Soil and Germplasm Resources, Nanchang 331717, China
| | - Wenhui Zhong
- Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, School of Geographical Sciences, Nanjing Normal University, Nanjing 210023, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China; Jiangsu Engineering Research Center for Soil Utilization & Sustainable Agriculture, Nanjing 210023, China
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18
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Li T, Wang S, Zhao L, Yuan X, Gao Y, Fu D, Liu C, Duan C. Improvement of soil nutrient cycling by dominant plants in natural restoration of heavy metal polluted areas. ENVIRONMENTAL RESEARCH 2024; 263:120030. [PMID: 39299450 DOI: 10.1016/j.envres.2024.120030] [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: 09/13/2024] [Accepted: 09/17/2024] [Indexed: 09/22/2024]
Abstract
Referring to the natural succession to restore polluted land is one of the most vital assignments to solving the environmental problems. However, there is little understanding of the natural restoration of nutrient biogeochemical cycles in abandoned land with severe metal pollution. To clarify the nutrient cycling process and the influence of organisms on it, we investigated the magnitude of rhizosphere effects on soil nitrogen (N), phosphorus (P) and sulphur (S) cycles in natural restoration of an abandoned metal mine, as well as the roles of plants and microorganisms in the nutrient cycles. Our data revealed that the rhizosphere had higher levels of ammoniation than non-rhizosphere soil at both stages of restoration. In the early stage, the rhizosphere had greater levels of inorganic phosphorus and organophosphorus solubilisation, as well as sulphite oxidation, compared to non-rhizosphere soil. The bacterial composition influenced the N and S cycles, while the fungal composition had the greatest effect on the P cycles. Furthermore, rhizosphere nutrition cycles and microbial communities altered according plant strategy. Overall, the plants that colonize the early stages of natural recovery demonstrate enhanced restoration of nutrient efficiency. These results contribute to further knowledge of nutrient recovery in mining areas, as well as suggestions for selecting remedial microorganisms and plants in metal-polluted environments.
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Affiliation(s)
- Ting Li
- Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments & School of Ecology and Environmental Sciences, Yunnan University, Kunming, Yunnan, 650500, China; Central Yunnan Field Scientific Station for Restoration of Ecological Function & Yunnan International Joint Research Center of Plateau Lake Ecological Restoration and Watershed Management, Yunnan Think Tank for Ecological Civilization Construction, Yunnan University, Kunming, 650091, China
| | - Sichen Wang
- Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments & School of Ecology and Environmental Sciences, Yunnan University, Kunming, Yunnan, 650500, China; Central Yunnan Field Scientific Station for Restoration of Ecological Function & Yunnan International Joint Research Center of Plateau Lake Ecological Restoration and Watershed Management, Yunnan Think Tank for Ecological Civilization Construction, Yunnan University, Kunming, 650091, China
| | - Luoqi Zhao
- Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments & School of Ecology and Environmental Sciences, Yunnan University, Kunming, Yunnan, 650500, China; Central Yunnan Field Scientific Station for Restoration of Ecological Function & Yunnan International Joint Research Center of Plateau Lake Ecological Restoration and Watershed Management, Yunnan Think Tank for Ecological Civilization Construction, Yunnan University, Kunming, 650091, China
| | - Xinqi Yuan
- Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments & School of Ecology and Environmental Sciences, Yunnan University, Kunming, Yunnan, 650500, China; Central Yunnan Field Scientific Station for Restoration of Ecological Function & Yunnan International Joint Research Center of Plateau Lake Ecological Restoration and Watershed Management, Yunnan Think Tank for Ecological Civilization Construction, Yunnan University, Kunming, 650091, China
| | - Yuhan Gao
- Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments & School of Ecology and Environmental Sciences, Yunnan University, Kunming, Yunnan, 650500, China; Central Yunnan Field Scientific Station for Restoration of Ecological Function & Yunnan International Joint Research Center of Plateau Lake Ecological Restoration and Watershed Management, Yunnan Think Tank for Ecological Civilization Construction, Yunnan University, Kunming, 650091, China
| | - Denggao Fu
- Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments & School of Ecology and Environmental Sciences, Yunnan University, Kunming, Yunnan, 650500, China; Central Yunnan Field Scientific Station for Restoration of Ecological Function & Yunnan International Joint Research Center of Plateau Lake Ecological Restoration and Watershed Management, Yunnan Think Tank for Ecological Civilization Construction, Yunnan University, Kunming, 650091, China
| | - Chang'e Liu
- Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments & School of Ecology and Environmental Sciences, Yunnan University, Kunming, Yunnan, 650500, China; Central Yunnan Field Scientific Station for Restoration of Ecological Function & Yunnan International Joint Research Center of Plateau Lake Ecological Restoration and Watershed Management, Yunnan Think Tank for Ecological Civilization Construction, Yunnan University, Kunming, 650091, China
| | - Changqun Duan
- Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments & School of Ecology and Environmental Sciences, Yunnan University, Kunming, Yunnan, 650500, China; Central Yunnan Field Scientific Station for Restoration of Ecological Function & Yunnan International Joint Research Center of Plateau Lake Ecological Restoration and Watershed Management, Yunnan Think Tank for Ecological Civilization Construction, Yunnan University, Kunming, 650091, China.
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19
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Shao S, Li Z, Zhu Y, Li Y, Li Y, Wu L, Rensing C, Cai P, Wang C, Zhang J, Li Q. Green manure ( Ophiopogon japonicus) cover promotes tea plant growth by regulating soil carbon cycling. Front Microbiol 2024; 15:1439267. [PMID: 39364171 PMCID: PMC11447704 DOI: 10.3389/fmicb.2024.1439267] [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: 05/27/2024] [Accepted: 09/05/2024] [Indexed: 10/05/2024] Open
Abstract
Introduction In mountainous tea plantations, which are the primary mode of tea cultivation in China, issues such as soil erosion and declining soil fertility are particularly severe. Although green manure cover is an effective agricultural measure for restoring soil fertility, its application in mountainous tea plantations has been relatively understudied. Methods This study investigated the effects of continuous green manure cover using the slope-protecting plant Ophiopogon japonicus on tea plant growth and soil microbial community structure. We implemented three treatments: 1 year of green manure coverage, 2 years of coverage, and a control, to study their effects on tea plant growth, soil physicochemical properties, and soil bacterial and fungal communities. Results Results demonstrate that green manure coverage significantly promote the growth of tea plants, enhanced organic matter and pH levels in soil, and various enzyme activities, including peroxidases and cellulases. Further functional prediction results indicate that green manure coverage markedly promoted several carbon cycling functions in soil microbes, including xylanolysis, cellulolysis, degradation of aromatic compounds, and saprotrophic processes. LEfSe analysis indicated that under green manure cover, the soil tends to enrich more beneficial microbial communities with degradation functions, such as Sphingomonas, Sinomonas, and Haliangium (bacteria), and Penicillium, Apiotrichum, and Talaromyce (fungi). In addition. Random forest and structural equation models indicated that carbon cycling, as a significant differentiating factor, has a significant promoting effect on tea plant growth. Discussion In the management practices of mountainous tea plantations, further utilizing slope-protecting plants as green manure can significantly influence the soil microbial community structure and function, enriching microbes involved in the degradation of organic matter and aromatic compounds, thereby positively impacting tea tree growth and soil nutrient levels.
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Affiliation(s)
- Shuaibo Shao
- College of Tea and Food, Wuyi University, Wuyishan, China
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Zhongwei Li
- College of Tea and Food, Wuyi University, Wuyishan, China
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yanqi Zhu
- College of Tea and Food, Wuyi University, Wuyishan, China
| | - Yi Li
- College of Tea and Food, Wuyi University, Wuyishan, China
| | - Yuanping Li
- College of Tea and Food, Wuyi University, Wuyishan, China
- Institute of Environmental Microbiology, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Linkun Wu
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Christopher Rensing
- Institute of Environmental Microbiology, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Pumo Cai
- College of Tea and Food, Wuyi University, Wuyishan, China
| | - Caihao Wang
- College of Tea and Food, Wuyi University, Wuyishan, China
| | - Jianmin Zhang
- College of Tea and Food, Wuyi University, Wuyishan, China
| | - Qisong Li
- College of Tea and Food, Wuyi University, Wuyishan, China
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20
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Domeignoz-Horta LA, Cappelli SL, Shrestha R, Gerin S, Lohila AK, Heinonsalo J, Nelson DB, Kahmen A, Duan P, Sebag D, Verrecchia E, Laine AL. Plant diversity drives positive microbial associations in the rhizosphere enhancing carbon use efficiency in agricultural soils. Nat Commun 2024; 15:8065. [PMID: 39277633 PMCID: PMC11401882 DOI: 10.1038/s41467-024-52449-5] [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: 07/31/2023] [Accepted: 09/07/2024] [Indexed: 09/17/2024] Open
Abstract
Expanding and intensifying agriculture has led to a loss of soil carbon. As agroecosystems cover over 40% of Earth's land surface, they must be part of the solution put in action to mitigate climate change. Development of efficient management practices to maximize soil carbon retention is currently limited, in part, by a poor understanding of how plants, which input carbon to soil, and microbes, which determine its fate there, interact. Here we implement a diversity gradient by intercropping undersown species with barley in a large field trial, ranging from one to eight undersown species. We find that increasing plant diversity strengthens positive associations within the rhizosphere soil microbial community in relation to negative associations. These associations, in turn, enhance community carbon use efficiency. Jointly, our results highlight how increasing plant diversity in agriculture can be used as a management strategy to enhance carbon retention potential in agricultural soils.
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Affiliation(s)
- Luiz A Domeignoz-Horta
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland.
- Université Paris-Saclay, INRAE, AgroParisTech, UMR EcoSys, Palaiseau, France.
| | - Seraina L Cappelli
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland
- Research Centre for Ecological Change, Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Rashmi Shrestha
- Department of Microbiology, Faculty of Agriculture and Forestry, University of Helsinki, Helsinki, Finland
- Department of Forest Sciences, Faculty of Agriculture and Forestry, University of Helsinki, Helsinki, Finland
| | - Stephanie Gerin
- Finnish Meteorological Institute, Climate System Research, Helsinki, Finland
| | - Annalea K Lohila
- Finnish Meteorological Institute, Climate System Research, Helsinki, Finland
| | - Jussi Heinonsalo
- Department of Forest Sciences, Faculty of Agriculture and Forestry, University of Helsinki, Helsinki, Finland
- INAR, Institute for Atmospheric and Earth System Research/ Forest Sciences, University of Helsinki, Helsinki, Finland
| | - Daniel B Nelson
- Department of Environmental Sciences - Botany, University of Basel, Basel, Switzerland
| | - Ansgar Kahmen
- Department of Environmental Sciences - Botany, University of Basel, Basel, Switzerland
| | - Pengpeng Duan
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
- Guangxi Key Laboratory of Karst Ecological Processes and Services, Huanjiang Observation and Research Station for Karst Ecosystems, Huanjiang, China
| | - David Sebag
- IFP Energies Nouvelles, Earth Sciences and Environmental Technologies Division, Rueil-Malmaison, France
| | - Eric Verrecchia
- Institute of Earth Surface Dynamics, Faculty of Geosciences and the Environment, University of Lausanne, Lausanne, Switzerland
| | - Anna-Liisa Laine
- Research Centre for Ecological Change, Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
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21
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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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22
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Huang L, Zhou Y. Influence of thinning on carbon storage mediated by soil physicochemical properties and microbial community composition in large Chinese fir timber plantation. CARBON BALANCE AND MANAGEMENT 2024; 19:29. [PMID: 39225934 PMCID: PMC11373250 DOI: 10.1186/s13021-024-00269-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Accepted: 07/21/2024] [Indexed: 09/04/2024]
Abstract
BACKGROUND Thinning practices are useful measures in forest management and play an essential role in maintaining ecological stability. However, the effects of thinning on the soil properties and microbial community in large Chinese fir timber plantations remain unknown. The purpose of this study was to investigate the changes in soil physicochemical properties and microbial community composition in topsoil (0-20 cm) under six different intensities (i.e., 300 (R300), 450 (R450), 600 (R600), 750 (R750) and 900 (R900) trees per hectare and 1650 (R1650) as a control) in a large Chinese fir timber plantation. RESULTS Compared with the CK treatment, thinning significantly altered the contents of soil organic carbon (SOC) and its fractions but not in a linear fashion; these indicators were highest in R900. In addition, thinning did not significantly affect the soil microbial community diversity indices but significantly affected the relative abundance of the core microbial community. Proteobacteria, Acidobacteria, and Actinobacteria were the dominant bacterial phyla; the relative abundances of Proteobacteria and Acidobacteria were highest in R900, and that of Actinobacteria was lowest in R900. The dominant fungal phyla were Ascomycota, Basidiomycota and Mucoromycota; the relative abundance of Ascomycota was lowest in R900, and that of Mucoromycota was highest in R900. The fungal microbial community composition was more sensitive than the bacterial community composition. The activity of the carbon-cycling genes was not linearly correlated with thinning, and the abundance of C-cycle genes was highest in R900. CONCLUSIONS These findings are important because they show that SOC and its fractions and the abundance of the soil microorganism community in large Chinese fir timber plantations can be significantly altered by thinning, thus affecting the capacity for carbon storage. These results may advance our understanding of how the density of large timber plantations could be modified to promote soil carbon storage.
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Affiliation(s)
- Lei Huang
- College of Forestry, Guizhou University, Guiyang, 550025, China
- Guizhou Academy of Forestry, Guiyang, 550025, China
- Institute for Forest Resources and Environment of Guizhou, Guizhou University, Guiyang, 550025, China
| | - Yunchao Zhou
- College of Forestry, Guizhou University, Guiyang, 550025, China.
- Institute for Forest Resources and Environment of Guizhou, Guizhou University, Guiyang, 550025, China.
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23
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Luo Z, Ren J, Manzoni S, Fatichi S. Temperature controls the relation between soil organic carbon and microbial carbon use efficiency. GLOBAL CHANGE BIOLOGY 2024; 30:e17492. [PMID: 39248442 DOI: 10.1111/gcb.17492] [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: 06/12/2024] [Revised: 08/16/2024] [Accepted: 08/19/2024] [Indexed: 09/10/2024]
Abstract
Microbial carbon use efficiency (CUE) is an important variable mediating microbial effects on soil organic carbon (SOC) since it summarizes how much carbon is used for microbial growth or is respired. Yet, the role of CUE in regulating SOC storage remains debated, with evidence for both positive and negative SOC-CUE relations. Here, we use a combination of measured data around the world and numerical simulations to explore SOC-CUE relations accounting for temperature (T) effects on CUE. Results reveal that the sign of the CUE-T relation controls the direction of the SOC-CUE relations. A negative CUE-T relation leads to a positive SOC-CUE relation and vice versa, highlighting that CUE-T patterns significantly affect how organic carbon is used by microbes and hence SOC-CUE relations. Numerical results also confirm the observed negative SOC-T relation, regardless of the CUE-T patterns, implying that temperature plays a more dominant role than CUE in controlling SOC storage. The SOC-CUE relation is usually negative when temperature effects are isolated, even though it can become positive when nonlinear microbial turnover is considered. These results indicate a dominant role of CUE-T patterns in controlling the SOC-CUE relation. Our findings help to better understand SOC and microbial responses to a warming climate.
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Affiliation(s)
- Zhaoyang Luo
- Department of Civil and Environmental Engineering, National University of Singapore, Singapore, Singapore
| | - Jianning Ren
- Department of Civil and Environmental Engineering, National University of Singapore, Singapore, Singapore
| | - Stefano Manzoni
- Department of Physical Geography and Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden
| | - Simone Fatichi
- Department of Civil and Environmental Engineering, National University of Singapore, Singapore, Singapore
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24
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Willard SJ, Liang G, Adkins S, Foley K, Murray J, Waring B. Land use drives the distribution of free, physically protected, and chemically protected soil organic carbon storage at a global scale. GLOBAL CHANGE BIOLOGY 2024; 30:e17507. [PMID: 39295217 DOI: 10.1111/gcb.17507] [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: 02/23/2024] [Revised: 07/24/2024] [Accepted: 08/20/2024] [Indexed: 09/21/2024]
Abstract
Soil organic carbon (SOC) sequestration is increasingly emphasized as a climate mitigation solution, as scientists, policy makers, and land managers prioritize enhancing belowground C storage. To identify key underlying drivers of total SOC distributions, we compiled a global dataset of soil C stocks held in three chemical forms, reflecting different mechanisms of organic C protection: free particulate organic C (fPOC), physically protected particulate organic C (oPOC), and mineral-protected soil organic C (mSOC). In our dataset, these three SOC pools were differentially sensitive to the effects of climate, soil mineralogy, and ecosystem type, emphasizing the importance of distinguishing between physical and chemical C protection mechanisms. C stocks in all three pools varied among ecosystems: cropland soils stored the least amount in each pool, with forest and grassland soils both containing significantly more fPOC (40%-60% greater in each ecosystem) than croplands. oPOC stocks did not significantly differ from zero in croplands but were substantial in forest and grassland soils. Meanwhile, mSOC stocks were the greatest in grasslands and shrublands (90%-100% greater than croplands). In cropland soils, there were no major effects of tillage on C storage in any of the three pools, while manure addition enhanced mSOC stocks, especially when added with inorganic N. Thus, the human land use intensity in croplands appears to reduce SOC storage in all major pools, depending upon management; retaining native vegetation should be emphasized to maintain current global SOC stocks.
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Affiliation(s)
- Samuel J Willard
- Department of Life Sciences, Imperial College London, London, UK
| | - Guopeng Liang
- Department of Biology, Utah State University, Logan, Utah, USA
| | - Savannah Adkins
- Department of Biology, Utah State University, Logan, Utah, USA
| | - Karen Foley
- Department of Biology, Utah State University, Logan, Utah, USA
| | - Jessica Murray
- Department of Biology, Utah State University, Logan, Utah, USA
| | - Bonnie Waring
- Department of Life Sciences, Imperial College London, London, UK
- Department of Biology, Utah State University, Logan, Utah, USA
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25
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Yang J, Li L, Xu Y, Yu Y, Virk AL, Li FM, Yang H, Kan ZR. Effects of straw biochar on microbial-derived carbon: A global meta-analysis. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 368:122233. [PMID: 39168008 DOI: 10.1016/j.jenvman.2024.122233] [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: 07/30/2024] [Accepted: 08/15/2024] [Indexed: 08/23/2024]
Abstract
Pyrolyzing biomass (e.g., crop straw) to produce biochar is a sustainable strategy in agricultural farmlands. Straw-derived biochar could increase soil organic carbon (SOC) and microbial-derived carbon (C) compared to no addition, while it is imperative to understand the effects of straw-derived biochar compared to its feedstock (e.g., straw). We retrieved 321 and 387 observations to investigate the effects of straw-derived biochar on microbial-derived C (e.g., microbial biomass C (MBC) and microbial necromass C (MNC)) taking no addition and straw as control, respectively. Notably, straw-derived biochar significantly increased dissolved organic C (DOC) by 24.9% and provided available substrates for microbial utilization, thus improving MBC by 16.7% and MNC by 19.7% compared to no addition. Nevertheless, compared to its feedstock (crop straw), straw-derived biochar significantly decreased MBC by 26.1% and MNC by 18.0% attributed to lower DOC, supported by a positive correlation between MBC and DOC (R2 = 0.53). A negative correlation between changes in MBC and SOC indicated the adverse of microbial activity for C accrual under conversion from straw to biochar. Moreover, soil layer, experiment duration, and initial C/N ratio are the crucial factors affecting MBC under the conversion from straw to biochar. Specifically, with significant variations among subgroups, when compared to straw addition, straw-derived biochar had lower reduction in MBC observed on 0-5 cm layers, mean annual precipitation ≥550 mm, mean annual temperature ≥10 °C, clay loam soil, experiment duration≥1 yr, initial SOC≥14 g kg-1, pH≥8, and bulk density ≥1.28 g cm-3. Straw-derived biochar even increased MBC by 32.8% in an anaerobic environment, associated with biochar produced under limited oxygen and anaerobic microorganisms dominating the microbial community. This study concludes that the conversion from crop straw to biochar increases SOC but constrains microbial-derived C, which may disturb the microbial-mediated C-cycling process.
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Affiliation(s)
- Jinkang Yang
- Collaborative Innovation Center for Modern Crop Production Co-Sponsored by Province and Ministry, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Li Li
- Collaborative Innovation Center for Modern Crop Production Co-Sponsored by Province and Ministry, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yinan Xu
- Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Yalin Yu
- Collaborative Innovation Center for Modern Crop Production Co-Sponsored by Province and Ministry, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Ahmad Latif Virk
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, 311300, China
| | - Feng-Min Li
- Collaborative Innovation Center for Modern Crop Production Co-Sponsored by Province and Ministry, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Haishui Yang
- Collaborative Innovation Center for Modern Crop Production Co-Sponsored by Province and Ministry, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zheng-Rong Kan
- Collaborative Innovation Center for Modern Crop Production Co-Sponsored by Province and Ministry, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China.
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Lu Z, Wang H, Wang Z, Liu J, Li Y, Xia L, Song S. Critical steps in the restoration of coal mine soils: Microbial-accelerated soil reconstruction. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 368:122200. [PMID: 39182379 DOI: 10.1016/j.jenvman.2024.122200] [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: 03/03/2024] [Revised: 08/04/2024] [Accepted: 08/10/2024] [Indexed: 08/27/2024]
Abstract
Soil reconstruction is a critical step in the restoration of environments affected by mining activities. This paper provides a comprehensive review of the significant role that microbial processes play in expediting soil structure formation, particularly within the context of mining environment restoration. Coal gangue and flotation tailings, despite their low carbon content and large production volumes, present potential substrates for soil reclamation. These coal-based solid waste materials can be utilized as substrates to produce high-quality soil and serve as an essential carbon source to enhance poor soil conditions. However, extracting active organic carbon components from coal-based solid waste presents a significant challenge due to its complex mineral composition. This article offers a thorough review of the soilization process of coal-based solid waste under the influence of microorganisms. It begins by briefly introducing the primary role of in situ microbial remediation technology in the soilization process. It then elaborates on various improvements to soil structure under the influence of microorganisms, including the enhancement of soil aggregate structure and soil nutrients. The article concludes with future recommendations aimed at improving the efficiency of soil reconstruction and restoration, reducing environmental risks, and promoting its application in complex environments. This will provide both theoretical and practical support for more effective environmental restoration strategies.
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Affiliation(s)
- Zijing Lu
- Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Wenzhi Street 34, Wuhan, 430072, Hubei, China; School of Resources and Environmental Engineering, Wuhan University of Technology, Wenzhi Street 34, Wuhan, 430072, Hubei, China
| | - Hengshuang Wang
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wenzhi Street 34, Wuhan, 430072, Hubei, China
| | - Zhixiang Wang
- Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Wenzhi Street 34, Wuhan, 430072, Hubei, China; School of Resources and Environmental Engineering, Wuhan University of Technology, Wenzhi Street 34, Wuhan, 430072, Hubei, China
| | - Jiazhi Liu
- Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Wenzhi Street 34, Wuhan, 430072, Hubei, China; School of Resources and Environmental Engineering, Wuhan University of Technology, Wenzhi Street 34, Wuhan, 430072, Hubei, China
| | - Yinta Li
- Department of Food Engineering, Weihai Ocean Vocational College, Haiwan South Road 1000, Weihai, 264300, Shandong, China
| | - Ling Xia
- Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Wenzhi Street 34, Wuhan, 430072, Hubei, China; School of Resources and Environmental Engineering, Wuhan University of Technology, Wenzhi Street 34, Wuhan, 430072, Hubei, China.
| | - Shaoxian Song
- Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Wenzhi Street 34, Wuhan, 430072, Hubei, China; School of Resources and Environmental Engineering, Wuhan University of Technology, Wenzhi Street 34, Wuhan, 430072, Hubei, China
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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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28
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Zhang L, Zhao X, Wang J, He L, Ren C, Wang J, Guo Y, Wang N, Zhao F. Antarctic Soils Select Copiotroph-Dominated Bacteria. Microorganisms 2024; 12:1689. [PMID: 39203535 PMCID: PMC11357078 DOI: 10.3390/microorganisms12081689] [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: 08/04/2024] [Revised: 08/13/2024] [Accepted: 08/14/2024] [Indexed: 09/03/2024] Open
Abstract
The life strategies of bacterial communities determine their structure and function and are an important driver of biogeochemical cycling. However, the variations in these strategies under different soil resource conditions remain largely unknown. We explored the bacterial life strategies and changes in structure and functions between Antarctic soils and forest (temperate, subtropical, and tropical) soils. The results showed that the weighted mean rRNA operon copy number in temperate soils was 19.5% lower than that in Antarctic soils, whereas no significant differences were observed among Antarctic, subtropical, and tropical soils. An unexpected result was that bacterial communities in Antarctic soils tended to be copiotrophs, such as Actinobacteriota and Bacteroidota, whereas those in temperate soils tended to be oligotrophs, such as Acidobacteriota and Chloroflexi. Functional predictions showed that in comparison to copiotrophs in Antarctic soils, temperate-inhabiting oligotrophic bacteria exhibited an 84.2-91.1% lower abundance of labile C decomposition genes (hemicellulose, cellulose, monosaccharides, and disaccharides), whereas a 74.4% higher abundance of stable C decomposition (lignin). Genes involved in N cycling (nitrogen fixation, assimilatory nitrate reduction, and denitrification) were 24.3-64.4% lower in temperate soils than in Antarctic soils. Collectively, our study provides a framework for describing the life strategies of soil bacteria, which are crucial to global biogeochemical cycles.
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Affiliation(s)
- Lujie Zhang
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, Northwest University, Xi’an 710127, China
- College of Urban and Environmental Sciences, Northwest University, Xi’an 710127, China
| | - Xue Zhao
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, Northwest University, Xi’an 710127, China
- College of Urban and Environmental Sciences, Northwest University, Xi’an 710127, China
| | - Jieying Wang
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, Northwest University, Xi’an 710127, China
- College of Urban and Environmental Sciences, Northwest University, Xi’an 710127, China
| | - Liyuan He
- Oak Ridge National Laboratory, Environmental Sciences Division and Climate Change Science Institute, Oak Ridge, TN 37831, USA
| | - Chengjie Ren
- College of Agronomy, Northwest A&F University, Yangling 712100, China
| | - Jun Wang
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, Northwest University, Xi’an 710127, China
- College of Urban and Environmental Sciences, Northwest University, Xi’an 710127, China
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China
- Shaanxi Key Laboratory for Carbon Neutral Technology, Northwest University, Xi’an 710127, China
| | - Yaoxin Guo
- The College of Life Sciences, Northwest University, Xi’an 710072, China
| | - Ninglian Wang
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, Northwest University, Xi’an 710127, China
- College of Urban and Environmental Sciences, Northwest University, Xi’an 710127, China
| | - Fazhu Zhao
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, Northwest University, Xi’an 710127, China
- College of Urban and Environmental Sciences, Northwest University, Xi’an 710127, China
- Shaanxi Key Laboratory for Carbon Neutral Technology, Northwest University, Xi’an 710127, China
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29
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Li J, Lei Y, Wen Y, Zhu J, Di X, Zeng Y, Han X, Que Z, Mediatrice H, Rensing C, Lin Z, Lin D. Short-Term Effects of Cenchrus fungigraminus/Potato or Broad Bean Interplanting on Rhizosphere Soil Fertility, Microbial Diversity, and Greenhouse Gas Sequestration in Southeast China. Microorganisms 2024; 12:1665. [PMID: 39203507 PMCID: PMC11356856 DOI: 10.3390/microorganisms12081665] [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: 06/17/2024] [Revised: 07/29/2024] [Accepted: 08/06/2024] [Indexed: 09/03/2024] Open
Abstract
Cenchrus fungigraminus is a new species and is largely used as forage and mushroom substrate. However, it can usually not be planted on farmland on account of local agricultural land policy. Interplanting Cenchrus fungigraminus with other crops annually (short-term) is an innovative strategy to promote the sustainable development of the grass industry in southern China. To further investigate this, C. fungigraminus mono-planting (MC), C. fungigraminus-potato interplanting (CIP) and C. fungigraminus-broad bean interplanting (CIB) were performed. Compared to MC, soil microbial biomass carbon (SMBC), soil organic matter (SOM), ammoniacal nitrogen (AMN), pH and soil amino sugars had a positive effect on the rhizosphere soil of CIP and CIB, as well as enhancing soil nitrogenase, nitrite reductase, and peroxidase activities (p < 0.05). Moreover, CIP improved the root vitality (2.08 times) and crude protein (1.11 times). In addition, CIB enhanced the crude fiber of C. fungigraminus seedlings. These two interplanting models also improved the microbial composition and diversity (Actinobacteria, Firmicutes, and Bacteroidota, etc.) in the rhizosphere soil of C. fungigraminus seedlings. Among all the samples, 189 and 59 genes were involved in methane cycling and nitrogen cycling, respectively, which improved the presence of the serine cycle, ribulose monophosphate, assimilatory nitrate reduction, methane absorption, and glutamate synthesis and inhibited denitrification. Through correlation analysis and the Mantel test, the putative functional genes, encoding functions in both nitrogen and methane cycling, were shown to have a significant positive effect on pH, moisture, AMN, SOM, SMBC, and soil peroxidase activity, while not displaying a significant effect on soil nitrogenase activity and total amino sugar (p < 0.05). The short-term influence of the interplanting model was shown to improve land use efficiency and economic profitability per unit land area, and the models could provide sustainable agricultural production for rural revitalization.
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Affiliation(s)
- Jing Li
- National Engineering Research Center of Juncao Technology, College of Juncao and Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (J.L.); (Y.L.); (Y.W.); (J.Z.); (X.D.); (Y.Z.); (H.M.); (C.R.); (Z.L.)
| | - Yufang Lei
- National Engineering Research Center of Juncao Technology, College of Juncao and Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (J.L.); (Y.L.); (Y.W.); (J.Z.); (X.D.); (Y.Z.); (H.M.); (C.R.); (Z.L.)
| | - Yeyan Wen
- National Engineering Research Center of Juncao Technology, College of Juncao and Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (J.L.); (Y.L.); (Y.W.); (J.Z.); (X.D.); (Y.Z.); (H.M.); (C.R.); (Z.L.)
| | - Jieyi Zhu
- National Engineering Research Center of Juncao Technology, College of Juncao and Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (J.L.); (Y.L.); (Y.W.); (J.Z.); (X.D.); (Y.Z.); (H.M.); (C.R.); (Z.L.)
| | - Xiaoyue Di
- National Engineering Research Center of Juncao Technology, College of Juncao and Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (J.L.); (Y.L.); (Y.W.); (J.Z.); (X.D.); (Y.Z.); (H.M.); (C.R.); (Z.L.)
| | - Yi Zeng
- National Engineering Research Center of Juncao Technology, College of Juncao and Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (J.L.); (Y.L.); (Y.W.); (J.Z.); (X.D.); (Y.Z.); (H.M.); (C.R.); (Z.L.)
| | - Xiao Han
- Shunchang Agriculture Science Research Institute, Nanping 353200, China;
| | - Zuhui Que
- Zhengfang Rural Revitalization and Development Center of Shunchang, Nanping 353216, China;
| | - Hatungimana Mediatrice
- National Engineering Research Center of Juncao Technology, College of Juncao and Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (J.L.); (Y.L.); (Y.W.); (J.Z.); (X.D.); (Y.Z.); (H.M.); (C.R.); (Z.L.)
| | - Christopher Rensing
- National Engineering Research Center of Juncao Technology, College of Juncao and Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (J.L.); (Y.L.); (Y.W.); (J.Z.); (X.D.); (Y.Z.); (H.M.); (C.R.); (Z.L.)
- Institute of Environmental Microbiology, College of Resource and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zhanxi Lin
- National Engineering Research Center of Juncao Technology, College of Juncao and Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (J.L.); (Y.L.); (Y.W.); (J.Z.); (X.D.); (Y.Z.); (H.M.); (C.R.); (Z.L.)
| | - Dongmei Lin
- National Engineering Research Center of Juncao Technology, College of Juncao and Ecology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (J.L.); (Y.L.); (Y.W.); (J.Z.); (X.D.); (Y.Z.); (H.M.); (C.R.); (Z.L.)
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30
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Qin S, Zhang D, Wei B, Yang Y. Dual roles of microbes in mediating soil carbon dynamics in response to warming. Nat Commun 2024; 15:6439. [PMID: 39085268 PMCID: PMC11291496 DOI: 10.1038/s41467-024-50800-4] [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: 02/05/2024] [Accepted: 07/22/2024] [Indexed: 08/02/2024] Open
Abstract
Understanding the alterations in soil microbial communities in response to climate warming and their controls over soil carbon (C) processes is crucial for projecting permafrost C-climate feedback. However, previous studies have mainly focused on microorganism-mediated soil C release, and little is known about whether and how climate warming affects microbial anabolism and the subsequent C input in permafrost regions. Here, based on a more than half-decade of in situ warming experiment, we show that compared with ambient control, warming significantly reduces microbial C use efficiency and enhances microbial network complexity, which promotes soil heterotrophic respiration. Meanwhile, microbial necromass markedly accumulates under warming likely due to preferential microbial decomposition of plant-derived C, further leading to the increase in mineral-associated organic C. Altogether, these results demonstrate dual roles of microbes in affecting soil C release and stabilization, implying that permafrost C-climate feedback would weaken over time with dampened response of microbial respiration and increased proportion of stable C pool.
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Affiliation(s)
- Shuqi Qin
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, 100093, Beijing, China
- China National Botanical Garden, 100093, Beijing, China
| | - Dianye Zhang
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, 100093, Beijing, China
- China National Botanical Garden, 100093, Beijing, China
| | - Bin Wei
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, 100093, Beijing, China
- China National Botanical Garden, 100093, Beijing, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Yuanhe Yang
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, 100093, Beijing, China.
- China National Botanical Garden, 100093, Beijing, China.
- University of Chinese Academy of Sciences, 100049, Beijing, China.
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31
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Xie M, Lv M, Zhao Z, Li L, Jiang H, Yu Y, Zhang X, Liu P, Chen J. New insights of bacterial and eukaryotic phenotypes on the plastics collected from the typical natural habitat of the endangered crocodile lizard. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 280:116541. [PMID: 38848637 DOI: 10.1016/j.ecoenv.2024.116541] [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: 02/14/2024] [Revised: 05/29/2024] [Accepted: 05/31/2024] [Indexed: 06/09/2024]
Abstract
Although accumulating evidence indicates that endangered animals suffer from plastic pollution, this has been largely overlooked. Here, we explored the bacteria and eukaryotes living in the plastics gathered from the natural habitat of the highly endangered crocodile lizard. The results demonstrated that the bacterial and eukaryotic communities on plastics formed a unique ecosystem that exhibited lower diversity than those in the surrounding water and soil. However, microbes displayed a more complex and stable network on plastic than that in water or soil, implying unique mechanisms of stabilization. These mechanisms enhanced their resilience and contributed to the provision of stable ecological services. Eukaryotes formed a simpler and smaller network than bacteria, indicating different survival strategies. The bacteria residing on the plastics played a significant role in carbon transformation and sequestration, which likely impacted carbon cycling in the habitat. Furthermore, microbial exchange between plastics and the crocodile lizard was observed, suggesting that plastisphere serves as a mobile gene bank for the exchange of information, including potentially harmful substances. Overall, microbes on plastic appear to significantly impact the crocodile lizard and its natural habitat via various pathways. These results provided novel insights into risks evaluation of plastic pollution and valuable guidance for government efforts in plastic pollutant control in nature reserves.
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Affiliation(s)
- Mujiao Xie
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Mei Lv
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Zhiwen Zhao
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Linmiao Li
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Haiying Jiang
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Yepin Yu
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Xiujuan Zhang
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Ping Liu
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China
| | - Jinping Chen
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, China.
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32
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Li Y, Wu M, Zhao T, Mou Z, Li T, Zhang J, Wu W, Wang F, Zhang W, Wang J, Li Y, Hui D, Lambers H, Peñuelas J, Sardans J, Liu Z. Responses of soil organic carbon compounds to phosphorus addition between tropical monoculture and multispecies forests. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 947:174672. [PMID: 39002582 DOI: 10.1016/j.scitotenv.2024.174672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 06/13/2024] [Accepted: 07/08/2024] [Indexed: 07/15/2024]
Abstract
Tropical forests are sensitive to nitrogen (N) and phosphorus (P) availability, and under nutrient application the variation of soil organic carbon (SOC) preserving mechanism remains to be explored. To reveal the forest-specific SOC preservation via biochemical selection in response to nutrient application, we investigated a monoculture (Acacia plantation) and a multispecies forest both with chronic fertilization in subtropical regions, and measured specific fingerprints of plant- and microbial-derived C compounds. In addition, to quantify the effect of P application on SOC content among tropical forests, we conducted a meta-analysis by compiling 125 paired measurements in field experiments from 62 studies. In our field experiment, microbial community composition and activity mediated forest-specific responses of SOC compounds to P addition. The shift of community composition from fungi towards Gram-positive bacteria in the Acacia plantation by P addition led to the consumption of microbial residual C (MRC) as C source; in comparison, P addition increased plant species with less complex lignin substrates and induced microbial acquisition for N sources, thus stimulated the decomposition of both plant- and microbial-derived C. Same with our field experiment, bulk SOC content had neutral response to P addition among tropical forests in the meta-analysis, although divergences could happen among experimental durations and secondary tree species. Close associations among SOC compounds with biotic origins and mineral associated organic C (MAOC) in the multispecies forest suggested contributions of both plant- and microbial-derive C to SOC stability. Regarding that fungal MRC closely associated with MAOC and consisted of soil N pool which tightly coupled to SOC pool, the reduce of fungal MRC by chronic P addition was detrimental to SOC accumulation and stability in tropical forests.
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Affiliation(s)
- Yue Li
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Mengyu Wu
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ting Zhao
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhijian Mou
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Tengteng Li
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Jing Zhang
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Wenjia Wu
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Faming Wang
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Wei Zhang
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Jun Wang
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Yingwen Li
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Dafeng Hui
- Department of Biological Sciences, Tennessee State University, Nashville, TN 37209, USA
| | - Hans Lambers
- School of Biological Sciences, University of Western Australia, Perth, WA 6009, Australia; Department of Plant Nutrition, College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, Key Laboratory of Plan-Soil Interactions, Ministry of Education, China Agricultural University, Beijing 100193, China
| | - Josep Peñuelas
- CSIC, Global Ecology Unit CREAF-CEAB-UAB, Cerdanyola del Valles, Catalonia 08193, Spain; CREAF, Cerdanyola del Valles, Catalonia 08193, Spain
| | - Jordi Sardans
- CSIC, Global Ecology Unit CREAF-CEAB-UAB, Cerdanyola del Valles, Catalonia 08193, Spain; CREAF, Cerdanyola del Valles, Catalonia 08193, Spain
| | - Zhanfeng Liu
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
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Rodríguez-Albarracín HS, Demattê JAM, Rosin NA, Amorim MTA, Contreras AED, Andreote FD, Rosas JTF. Soil organic carbon sequestration potential explained by mineralogical and microbiological activity using spectral transfer functions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 947:174652. [PMID: 38992377 DOI: 10.1016/j.scitotenv.2024.174652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 06/05/2024] [Accepted: 07/07/2024] [Indexed: 07/13/2024]
Abstract
The ability of soil to sequester carbon and reduce atmospheric CO2 concentrations is limited and depends on the soil minerals and their interaction with the microbiota. Microbial activities are closely associated with the types and amounts of soil organic matter (SOM) and clay minerals that have functional groups that interact with energy in Vis NIR-SWIR and Mid-IR wavelengths. The main objective of this research was to determine, based on these spectral ranges, the relation between mineralogical and organic compounds, as their sequestration and specialization in soils from Brazil. It was possible to map microbiological activity by spectral transfer functions and digital soil mapping reaching R2 from 0.77 to 0.85. Multiple regression equations were constructed to quantify enzymatic activity, microbial biomass carbon (MBC), particulate organic matter (POM), and resistant forms of carbon, and SOM associated with the mineral fraction (MAOM). All these properties were detected by specific bands obtained with the recursive feature elimination (RFE) algorithm, reaching correlations from 0.64 to 0.98 in specific ranges. The prediction model of the carbon sequestration potential was adjusted with microbiological and mineralogical variables from Vis-NIR-SWIR and the Mid-IR spectral range. A SARAR double autoregressive model was adjusted with r 0.61 and to a spatial error model (SEM) with r 0.7. The explanatory variables were associated with kaolinite, hematite, goethite, gibbsite, and the abundance of fungi, actinomycetes, vesico-arbuscular mycorrhizal fungi, enzymatic activity of beta-glucosidase, urease and phosphatase, and POM. Among the microbiological variables, the general abundance of fungi was the most important, in contrast to enzymatic activity that was the least important. The interaction between the different maps constructed and historical land use allowed the identification of areas that contribute to sequestering new carbon and could be the key to climate change mitigation strategies.
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Affiliation(s)
- Heidy Soledad Rodríguez-Albarracín
- Departament of Soil Science, Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Piracicaba, São Paulo 13418-900, Brazil.
| | - José A M Demattê
- Departament of Soil Science, Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Piracicaba, São Paulo 13418-900, Brazil.
| | - Nícolas Augusto Rosin
- Departament of Soil Science, Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Piracicaba, São Paulo 13418-900, Brazil.
| | - Merilyn Taynara Accorsi Amorim
- Departament of Soil Science, Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Piracicaba, São Paulo 13418-900, Brazil.
| | - Aquiles Enrique Darghan Contreras
- Faculty of Agricultural Sciences, Department of Agronomy, National University of Colombia, Carrera 30 núm. 45-03, Building 500, Bogotá, DC, Colombia.
| | - Fernando Dini Andreote
- Departament of Soil Science, Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Piracicaba, São Paulo 13418-900, Brazil.
| | - Jorge Tadeu Fim Rosas
- Departament of Soil Science, Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Piracicaba, São Paulo 13418-900, Brazil.
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Tan T, Genova G, Heuvelink GBM, Lehmann J, Poggio L, Woolf D, You F. Importance of Terrain and Climate for Predicting Soil Organic Carbon Is Highly Variable across Local to Continental Scales. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:11492-11503. [PMID: 38904357 DOI: 10.1021/acs.est.4c01172] [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: 06/22/2024]
Abstract
Soil organic carbon (SOC) plays a vital role in global carbon cycling and sequestration, underpinning the need for a comprehensive understanding of its distribution and controls. This study explores the importance of various covariates on SOC spatial distribution at both local (up to 1.25 km) and continental (USA) scales using a deep learning approach. Our findings highlight the significant role of terrain attributes in predicting SOC concentration distribution with terrain, contributing approximately one-third of the overall prediction at the local scale. At the continental scale, climate is only 1.2 times more important than terrain in predicting SOC distribution, whereas at the local scale, the structural pattern of terrain is 14 and 2 times more important than climate and vegetation, respectively. We underscore that terrain attributes, while being integral to the SOC distribution at all scales, are stronger predictors at the local scale with explicit spatial arrangement information. While this observational study does not assess causal mechanisms, our analysis nonetheless presents a nuanced perspective about SOC spatial distribution, which suggests disparate predictors of SOC at local and continental scales. The insights gained from this study have implications for improved SOC mapping, decision support tools, and land management strategies, aiding in the development of effective carbon sequestration initiatives and enhancing climate mitigation efforts.
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Affiliation(s)
- Tianhong Tan
- Systems Engineering, Cornell University, Ithaca, New York 14853, United States
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Giulio Genova
- ISRIC─World Soil Information, Wageningen 6700 AJ, The Netherlands
| | | | - Johannes Lehmann
- School of Integrative Plant Sciences, Cornell University, Ithaca, New York 14853, United States
| | - Laura Poggio
- ISRIC─World Soil Information, Wageningen 6700 AJ, The Netherlands
| | - Dominic Woolf
- School of Integrative Plant Sciences, Cornell University, Ithaca, New York 14853, United States
- Cornell Institute of Digital Agriculture, Cornell University, Ithaca, New York 14853, United States
| | - Fengqi You
- Systems Engineering, Cornell University, Ithaca, New York 14853, United States
- Cornell Institute of Digital Agriculture, Cornell University, Ithaca, New York 14853, United States
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Wen X, Qin X, Long XE, Li Q. Microbial necromass facilitated the humification process through amino sugar reactions during the co-composting of cow manure plus sawdust. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:48175-48188. [PMID: 39017863 DOI: 10.1007/s11356-024-34381-9] [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: 03/26/2024] [Accepted: 07/09/2024] [Indexed: 07/18/2024]
Abstract
Humus (HS) reservoirs can embed microbial necromass (including cell wall components that are intact or with varying degrees of fragmentation) in small pores, raising widespread concerns about the potential for C/N interception and stability in composting systems. In this study, fresh cow manure and sawdust were used for microbial solid fermentation, and the significance of microbial residues in promoting humification was elucidated by measuring their physicochemical properties and analyzing their microbial informatics. These results showed that the stimulation of external carbon sources (NaHCO3) led to an increase in the accumulation of bacterial necromass C/N from 6.19 and 0.91 µg/mg to 21.57 and 3.20 µg/mg, respectively. Additionally, fungal necromass C/N values were about 3 times higher than the initial values. This contributed to the increase in HS content and the increased condensation of polysaccharides and nitrogen-containing compounds during maturation. The formation of cellular debris mainly depends on the enrichment of Actinobacteria, Proteobacteria, Ascomycota, and Chytridiomycota. Furthermore, Euryarchaeota was the core functional microorganism secreting cell wall lytic enzymes (including AA3, AA7, GH23, and GH15). In conclusion, this study comprehensively analyzed the transformation mechanisms of cellular residuals at different profile scales, providing new insights into C/N cycles and sequestration.
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Affiliation(s)
- Xiaoli Wen
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Xiaoya Qin
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Xi-En Long
- School of Geographic Sciences, Nantong University, Nantong, 226019, Jiangsu, China
| | - Qunliang Li
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China.
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Chen Y, Zhang Y, Zhang X, Stevens C, Fu S, Feng T, Li X, Chen Q, Liu S, Hu S. Canopy and understory nitrogen additions differently affect soil microbial residual carbon in a temperate forest. GLOBAL CHANGE BIOLOGY 2024; 30:e17427. [PMID: 39021313 DOI: 10.1111/gcb.17427] [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: 12/19/2023] [Revised: 07/01/2024] [Accepted: 07/05/2024] [Indexed: 07/20/2024]
Abstract
Atmospheric nitrogen (N) deposition in forests can affect soil microbial growth and turnover directly through increasing N availability and indirectly through altering plant-derived carbon (C) availability for microbes. This impacts microbial residues (i.e., amino sugars), a major component of soil organic carbon (SOC). Previous studies in forests have so far focused on the impact of understory N addition on microbes and microbial residues, but the effect of N deposition through plant canopy, the major pathway of N deposition in nature, has not been explicitly explored. In this study, we investigated whether and how the quantities (25 and 50 kg N ha-1 year-1) and modes (canopy and understory) of N addition affect soil microbial residues in a temperate broadleaf forest under 10-year N additions. Our results showed that N addition enhanced the concentrations of soil amino sugars and microbial residual C (MRC) but not their relative contributions to SOC, and this effect on amino sugars and MRC was closely related to the quantities and modes of N addition. In the topsoil, high-N addition significantly increased the concentrations of amino sugars and MRC, regardless of the N addition mode. In the subsoil, only canopy N addition positively affected amino sugars and MRC, implying that the indirect pathway via plants plays a more important role. Neither canopy nor understory N addition significantly affected soil microbial biomass (as represented by phospholipid fatty acids), community composition and activity, suggesting that enhanced microbial residues under N deposition likely stem from increased microbial turnover. These findings indicate that understory N addition may underestimate the impact of N deposition on microbial residues and SOC, highlighting that the processes of canopy N uptake and plant-derived C availability to microbes should be taken into consideration when predicting the impact of N deposition on the C sequestration in temperate forests.
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Affiliation(s)
- Yuanqi Chen
- Institute of Geographical Environment and Carbon Peak and Neutrality, School of Earth Sciences and Spatial Information Engineering, Hunan University of Science and Technology, Xiangtan, China
- Key Laboratory of Forest Ecology and Environment of Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing, China
| | - Yu Zhang
- Institute of Carbon Peak and Neutrality, School of Life and Health Sciences, Hunan University of Science and Technology, Xiangtan, China
| | - Xu Zhang
- Institute of Carbon Peak and Neutrality, School of Life and Health Sciences, Hunan University of Science and Technology, Xiangtan, China
| | - Carly Stevens
- Lancaster Environment Centre, Lancaster University, Lancaster, UK
| | - Shenglei Fu
- Henan Dabieshan National Field Observation and Research Station of Forest Ecosystem, Henan University, Zhengzhou, China
| | - Teng Feng
- Institute of Geographical Environment and Carbon Peak and Neutrality, School of Earth Sciences and Spatial Information Engineering, Hunan University of Science and Technology, Xiangtan, China
| | - Xiaowei Li
- Henan Dabieshan National Field Observation and Research Station of Forest Ecosystem, Henan University, Zhengzhou, China
| | - Quan Chen
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Hainan University, Haikou, China
| | - Shirong Liu
- Key Laboratory of Forest Ecology and Environment of Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing, China
| | - Shuijin Hu
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, North Carolina, USA
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Tohtahun K, Kong D, Chai L, Mulati M, Zhao X, Dong X, Zhang W. Diversity and growth-promoting characteristics of rhizosphere bacteria of three naturally growing plants at the sand iron ore restoration area in Qinghe County. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 930:172654. [PMID: 38649044 DOI: 10.1016/j.scitotenv.2024.172654] [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: 12/13/2023] [Revised: 04/19/2024] [Accepted: 04/19/2024] [Indexed: 04/25/2024]
Abstract
It is a great challenge to restore northern mines after mining and achieve optimal results due to the extremely harsh environment and climate, as in Qinghe County of Xinjiang Province, China. Qinghe County has a climate of drought, cold, strong winds, and high altitude. After sand and iron mining, the soil in this area contains a large amount of sand and gravel with extremely low organic matter, nitrogen deficiency, and a high pH of 9.26. Our preliminary studies disclosed that only three plants, including Caligonum junceum, Atraphaxis virgata, and Melilotus albus Medic, can grow naturally in this environment without any artificial management. For effective ecology restoration, this study explored the mechanism of plant-microbial interaction and stress resistance in this environment. It was found that although the soil condition in the sand iron ore landfill area is extreme, the bacterial diversity remained high, with Shannon and Simpson indices reaching 9.135 and 0.994, respectively. The planting of three types of remediation plants did not significantly improve, or even decreased, the soil bacterial diversity index, but greatly changed the composition of dominant bacterial genera. Significant differences in the composition of rhizosphere soil bacterial communities among these three remediation plants were observed. Potential new bacterial species accounted for 9.8 %, and the proportion of unique genera reached 30 % or 50 %, respectively. Among all the isolated strains, 74 % had nitrogen fixation and other growth-promoting properties. In summary, the soil microbial community structure in this extreme environment is unique and diverse. The types of remediation plants play a major role in the composition of the rhizosphere bacterial community structure, and the recruited growth-promoting bacteria are diverse and functional. This study may offer valuable information for further studies in vegetation restoration and aid in ecology restoration, especially under extreme conditions.
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Affiliation(s)
- Kawsar Tohtahun
- School of Life Sciences, Xinjiang Normal University, Xinyi Road, Urumqi 830046, The People's Republic of China; Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology, Urumqi 830046, The People's Republic of China
| | - Delong Kong
- School of Life Sciences, Xinjiang Normal University, Xinyi Road, Urumqi 830046, The People's Republic of China; Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology, Urumqi 830046, The People's Republic of China
| | - Lili Chai
- School of Life Sciences, Xinjiang Normal University, Xinyi Road, Urumqi 830046, The People's Republic of China; Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology, Urumqi 830046, The People's Republic of China
| | - Mila Mulati
- School of Life Sciences, Xinjiang Normal University, Xinyi Road, Urumqi 830046, The People's Republic of China; Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology, Urumqi 830046, The People's Republic of China
| | - Xiaoying Zhao
- School of Life Sciences, Xinjiang Normal University, Xinyi Road, Urumqi 830046, The People's Republic of China
| | - Xiuli Dong
- School of Osteopathic Medicine, Campbell University, 4350 US Hwy 421 S, Lillington, NC 27546, USA.
| | - Wei Zhang
- School of Life Sciences, Xinjiang Normal University, Xinyi Road, Urumqi 830046, The People's Republic of China; Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology, Urumqi 830046, The People's Republic of China.
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Jia B, Mao H, Liang Y, Chen J, Jia L, Zhang M, Li XG. Salinity decreases the contribution of microbial necromass to soil organic carbon pool in arid regions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 930:172786. [PMID: 38677417 DOI: 10.1016/j.scitotenv.2024.172786] [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: 02/01/2024] [Revised: 04/07/2024] [Accepted: 04/24/2024] [Indexed: 04/29/2024]
Abstract
Saline soils are widely distributed in arid areas but there is a lack of mechanistic understanding on the effect of salinity on the formation and biochemical composition of soil organic carbon (SOC). We investigated the effects of salinity on the accumulation of microbial necromass under natural vegetation and in cropland in salt-affected arid areas stretching over a 1200-km transect in northwest China. Under both natural vegetation and cropland, microbial physiological activity (indicated by microbial biomass carbon normalized enzymatic activity) decreased sharply where the electrical conductivity approached 4 ds m-1 (a threshold to distinguish between saline and non-saline soils), but microbial biomass was only slightly affected by salinity. These indicated that a larger proportion of microbes could be inactive or dormant in saline soils. The contribution of fungal necromass C to SOC decreased but the contribution of bacterial necromass C to the SOC increased with increasing soil salinity. Adding fungal and bacterial necromass C together, the contribution of microbial necromass C to SOC in saline soils was 32-39 % smaller compared with non-saline soils. Fungal necromass C took up 85-86 % of microbial necromass C in non-saline soils but this proportion dropped to 60-66 % in saline soils. We suggested that the activity, growth, and turnover rate of microbes slowed by salinity was responsible for the decreased accumulation of fungal necromass in saline compared with non-saline soils, while the increased accumulation of bacterial residue in saline soils could be induced mainly by its slower decomposition. Soil microbial biomass was a poor predictor for the accumulation of microbial necromass in saline soils. We demonstrated a reduced contribution of microbial necromass to SOC and a shift in its composition towards the increase in bacterial origin in saline relative to non-saline soils. We concluded that salinity profoundly changes the biochemistry of SOC in arid regions.
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Affiliation(s)
- Bin Jia
- College of Ecology, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Han Mao
- College of Ecology, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Yanmei Liang
- College of Ecology, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Jie Chen
- College of Ecology, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Li Jia
- College of Ecology, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Meilan Zhang
- General Station of Gansu Cultivated Land Quality Construction and Protection, Lanzhou, Gansu 730000, China
| | - Xiao Gang Li
- College of Ecology, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China.
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39
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Liu C, Liu Z, Cui B, Yang H, Gao C, Chang M, Liu Y. Effects of returning peach branch waste to fields on soil carbon cycle mediated by soil microbial communities. Front Microbiol 2024; 15:1406661. [PMID: 38957617 PMCID: PMC11217190 DOI: 10.3389/fmicb.2024.1406661] [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: 03/25/2024] [Accepted: 06/05/2024] [Indexed: 07/04/2024] Open
Abstract
In recent years, the rise in greenhouse gas emissions from agriculture has worsened climate change. Efficiently utilizing agricultural waste can significantly mitigate these effects. This study investigated the ecological benefits of returning peach branch waste to fields (RPBF) through three innovative strategies: (1) application of peach branch organic fertilizer (OF), (2) mushroom cultivation using peach branches as a substrate (MC), and (3) surface mulching with peach branches (SM). Conducted within a peach orchard ecosystem, our research aimed to assess these resource utilization strategies' effects on soil properties, microbial community, and carbon cycle, thereby contributing to sustainable agricultural practices. Our findings indicated that all RPBF treatments enhance soil nutrient content, enriching beneficial microorganisms, such as Humicola, Rhizobiales, and Bacillus. Moreover, soil AP and AK were observed to regulate the soil carbon cycle by altering the compositions and functions of microbial communities. Notably, OF and MC treatments were found to boost autotrophic microorganism abundance, thereby augmenting the potential for soil carbon sequestration and emission reduction. Interestingly, in peach orchard soil, fungal communities were found to contribute more greatly to SOC content than bacterial communities. However, SM treatment resulted in an increase in the presence of bacterial communities, thereby enhancing carbon emissions. Overall, this study illustrated the fundamental pathways by which RPBF treatment affects the soil carbon cycle, providing novel insights into the rational resource utilization of peach branch waste and the advancement of ecological agriculture.
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Affiliation(s)
- Chenyu Liu
- College of Bioscience and Resource Environment, Beijing University of Agriculture, Beijing, China
| | - Zhiling Liu
- College of Bioscience and Resource Environment, Beijing University of Agriculture, Beijing, China
| | - Bofei Cui
- College of Bioscience and Resource Environment, Beijing University of Agriculture, Beijing, China
| | - Haiqing Yang
- Fruit Industry Serve Center of Pinggu District, Beijing, China
| | - Chengda Gao
- College of Humanities and Urban-Rural Development, Beijing University of Agriculture, Beijing, China
| | - Mingming Chang
- College of Bioscience and Resource Environment, Beijing University of Agriculture, Beijing, China
| | - Yueping Liu
- College of Bioscience and Resource Environment, Beijing University of Agriculture, Beijing, China
- Key Laboratory for Northern Urban Agriculture Ministry of Agriculture and Rural Affairs, Beijing University of Agriculture, Beijing, China
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40
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Wang X, Cheng L, Xiong C, Whalley WR, Miller AJ, Rengel Z, Zhang F, Shen J. Understanding plant-soil interactions underpins enhanced sustainability of crop production. TRENDS IN PLANT SCIENCE 2024:S1360-1385(24)00126-2. [PMID: 38897884 DOI: 10.1016/j.tplants.2024.05.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 05/17/2024] [Accepted: 05/23/2024] [Indexed: 06/21/2024]
Abstract
The Green Revolution transformed agriculture with high-yielding, stress-resistant varieties. However, the urgent need for more sustainable agricultural development presents new challenges: increasing crop yield, improving nutritional quality, and enhancing resource-use efficiency. Soil plays a vital role in crop-production systems and ecosystem services, providing water, nutrients, and physical anchorage for crop growth. Despite advancements in plant and soil sciences, our understanding of belowground plant-soil interactions, which impact both crop performance and soil health, remains limited. Here, we argue that a lack of understanding of these plant-soil interactions hinders sustainable crop production. We propose that targeted engineering of crops and soils can provide a fresh approach to achieve higher yields, more efficient sustainable crop production, and improved soil health.
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Affiliation(s)
- Xin Wang
- State Key Laboratory of Nutrient Use and Management, Department of Plant Nutrition, College of Resources and Environmental Sciences, China Agricultural University, Key Laboratory of Plant-Soil Interactions, Ministry of Education, Beijing 100193, China; State Key Laboratory of Crop Gene Resources and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Lingyun Cheng
- State Key Laboratory of Nutrient Use and Management, Department of Plant Nutrition, College of Resources and Environmental Sciences, China Agricultural University, Key Laboratory of Plant-Soil Interactions, Ministry of Education, Beijing 100193, China
| | - Chuanyong Xiong
- State Key Laboratory of Nutrient Use and Management, Department of Plant Nutrition, College of Resources and Environmental Sciences, China Agricultural University, Key Laboratory of Plant-Soil Interactions, Ministry of Education, Beijing 100193, China; Horticultural Research Institute, Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China
| | - William R Whalley
- Rothamsted Research, West Common, Harpenden, Hertfordshire, AL5 2JQ, UK
| | - Anthony J Miller
- Biochemistry and Metabolism Department, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, UK
| | - Zed Rengel
- Soil Science and Plant Nutrition, UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA 6009, Australia; Institute for Adriatic Crops and Karst Reclamation, 21000 Split, Croatia
| | - Fusuo Zhang
- State Key Laboratory of Nutrient Use and Management, Department of Plant Nutrition, College of Resources and Environmental Sciences, China Agricultural University, Key Laboratory of Plant-Soil Interactions, Ministry of Education, Beijing 100193, China
| | - Jianbo Shen
- State Key Laboratory of Nutrient Use and Management, Department of Plant Nutrition, College of Resources and Environmental Sciences, China Agricultural University, Key Laboratory of Plant-Soil Interactions, Ministry of Education, Beijing 100193, China.
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Li J, Dong L, Fan M, Shangguan Z. Long-term vegetation restoration promotes lignin phenol preservation and microbial anabolism in forest plantations: Implications for soil organic carbon dynamics. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 928:172635. [PMID: 38643876 DOI: 10.1016/j.scitotenv.2024.172635] [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: 04/15/2024] [Accepted: 04/18/2024] [Indexed: 04/23/2024]
Abstract
Vegetation restoration contributes to soil organic carbon (C; SOC) sequestration through the accumulation of plant and microbial residues, but the mechanisms underlying this microbially mediated process are not well resolved. To depict the dynamics of plant- and microbial-derived C in restored forest ecosystems, soil samples were collected from Robinia pseudoacacia plantations of different stand ages (15, 25, 35, 45 years old) established on degraded wheat fields. The results showed that the degree of lignin phenol oxidation decreased with increasing stand age (P < 0.05), and hemicellulose-degrading genes were detected at higher relative abundances than other functional gene categories, indicating selective preservation of recalcitrant lignin phenols. Despite both glucosamine (R2 = 0.61, P < 0.001) and muramic acid (R2 = 0.37, P < 0.001) contents trending upward over time, fungal residual C accounted for a greater proportion of SOC compared with bacterial residual C. Accordingly, fungal residual C, which exhibited a similar response pattern as total microbial residual C to vegetation restoration, was considered a major contributor to the SOC pool. These results provided evidence that long-term vegetation restoration enhanced SOC sequestration in R. pseudoacacia forest by promoting the preservation of plant-derived lignin phenols and concomitant microbial anabolism. Partial least squares-discriminant analysis identified two important ecological clusters (i.e., modules) in the fungal network that profoundly influenced lignin phenol oxidation (P < 0.05) and microbial residual C accumulation (P < 0.01). Among the dominant taxa in microbial networks, the bacterial phyla Proteobacteria and Acidobacteriota had potential to degrade recalcitrant C compounds (e.g., cellulose, lignin), whereas the fungal phylum Ascomycota could outcompete for labile C fractions (e.g., dissolved organic C). Findings of this study can enable a mechanistic understanding of SOC stability driven by microbial turnover in restored forest ecosystems.
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Affiliation(s)
- Jiajia Li
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Lingbo Dong
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Miaochun Fan
- Department of Grassland Science, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Zhouping Shangguan
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
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Zhang Q, Chen X, Zhou X, Nie X, Liu G, Zhuang G, Zheng G, Fortin D, Ma A. Tibetan Plateau grasslands might increase sequestration of microbial necromass carbon under future warming. Commun Biol 2024; 7:686. [PMID: 38834864 DOI: 10.1038/s42003-024-06396-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Accepted: 05/29/2024] [Indexed: 06/06/2024] Open
Abstract
Microbial necromass carbon (MNC) can reflect soil carbon (C) sequestration capacity. However, changes in the reserves of MNC in response to warming in alpine grasslands across the Tibetan Plateau are currently unclear. Based on large-scale sampling and published observations, we divided eco-clusters based on dominant phylotypes, calculated their relative abundance, and found that their averaged importance to MNC was higher than most other environmental variables. With a deep learning model based on stacked autoencoder, we proved that using eco-cluster relative abundance as the input variable of the model can accurately predict the overall distribution of MNC under current and warming conditions. It implied that warming could lead to an overall increase in the MNC in grassland topsoil across the Tibetan Plateau, with an average increase of 7.49 mg/g, a 68.3% increase. Collectively, this study concludes that alpine grassland has the tendency to increase soil C sequestration capacity on the Tibetan Plateau under future warming.
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Affiliation(s)
- Qinwei Zhang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xianke Chen
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaorong Zhou
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xin Nie
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Guohua Liu
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Guoqiang Zhuang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Binzhou Institute of Technology, Binzhou, 256600, China
| | - Guodong Zheng
- School of Environmental Studies, China University of Geosciences, Wuhan, 430078, China
| | - Danielle Fortin
- Department of Geology, University of Ottawa, Ottawa, K1N6N5, Canada
| | - Anzhou Ma
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
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Li J, Zhao J, Liao X, Hu P, Wang W, Ling Q, Xie L, Xiao J, Zhang W, Wang K. Pathways of soil organic carbon accumulation are related to microbial life history strategies in fertilized agroecosystems. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 927:172191. [PMID: 38588738 DOI: 10.1016/j.scitotenv.2024.172191] [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: 12/18/2023] [Revised: 03/29/2024] [Accepted: 04/01/2024] [Indexed: 04/10/2024]
Abstract
Although the formation, turnover, and accumulation of soil organic carbon (SOC) are driven by different fertilizer inputs and their subsequent microbial-mediated transformation, the relationship between changes in plant-derived and microbial-derived components and soil microbial life history strategies under different fertilization regimes has not been well explored. In this study, the changes in microbial necromass carbon (MNC), lignin phenols, and glomalin-related soil protein (GRSP), as well as soil microbial life history strategy were determined in a 16-year field experiment in response to different fertilization regimes, including a no-fertilizer control (C), conventional chemical NPK fertilization (NPK), and partial substitutions of the NPK in chemical fertilizers with a low (30 %) or high (60 %) level of straw (0.3S and 0.6S) or cattle manure (0.3M and 0.6M). The results showed that total lignin phenol content and its contribution to SOC were significantly increased by 88.7 % and 74.2 %, respectively, in high-level straw substitution treatment as compared to chemical fertilization. Both high-level straw and cattle manure substitution increased MNC and total GRSP contents, but did not alter their contributions to SOC compared to chemical fertilization. In fertilized treatments, the high-level cattle manure substitution had the lowest and highest bacterial and fungal K/r ratio, respectively. Bacterial K/r ratio was an important factor in predicting bacterial necromass carbon content and there was a significant negative correlation between them. The ratio of ectomycorrhizal to saprotrophic fungi and fungal diversity were important factors for predicting lignin phenol and GRSP contents, respectively. In addition, the SEMs modeling indicated that straw substitution directly affected lignin phenol and MNC accumulation, whereas cattle manure substitution indirectly affected MNC accumulation by affecting microbial life history strategies. In conclusions, agricultural residues inputs support the formation of a multiple carbon pool of SOC compared to chemical fertilization; and microbial life history strategy is an important driver of SOC formation and affects SOC accumulation and stability in agroecosystems.
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Affiliation(s)
- Jiangnan Li
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, PR China; College of Environment and Ecology, Hunan Agricultural University, Changsha 410128, PR China; Guangxi Key Laboratory of Karst Ecological Processes and Services, Huanjiang 547100, PR China; Huanjiang Observation and Research Station for Karst Ecosystems, Chinese Academy of Sciences, Huanjiang 547100, PR China
| | - Jie Zhao
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, PR China; Guangxi Industrial Technology Research Institute for Karst Rocky Desertification Control, Nanning 530012, PR China; Guangxi Key Laboratory of Karst Ecological Processes and Services, Huanjiang 547100, PR China; Huanjiang Observation and Research Station for Karst Ecosystems, Chinese Academy of Sciences, Huanjiang 547100, PR China.
| | - Xionghui Liao
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, PR China; Guangxi Key Laboratory of Karst Ecological Processes and Services, Huanjiang 547100, PR China; Huanjiang Observation and Research Station for Karst Ecosystems, Chinese Academy of Sciences, Huanjiang 547100, PR China
| | - Peilei Hu
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, PR China; Guangxi Key Laboratory of Karst Ecological Processes and Services, Huanjiang 547100, PR China; Huanjiang Observation and Research Station for Karst Ecosystems, Chinese Academy of Sciences, Huanjiang 547100, PR China
| | - Wenyu Wang
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, PR China; Guangxi Key Laboratory of Karst Ecological Processes and Services, Huanjiang 547100, PR China; Huanjiang Observation and Research Station for Karst Ecosystems, Chinese Academy of Sciences, Huanjiang 547100, PR China
| | - Qiumei Ling
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, PR China; Guangxi Key Laboratory of Karst Ecological Processes and Services, Huanjiang 547100, PR China; Huanjiang Observation and Research Station for Karst Ecosystems, Chinese Academy of Sciences, Huanjiang 547100, PR China
| | - Lei Xie
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, PR China; Guangxi Key Laboratory of Karst Ecological Processes and Services, Huanjiang 547100, PR China; Huanjiang Observation and Research Station for Karst Ecosystems, Chinese Academy of Sciences, Huanjiang 547100, PR China
| | - Jun Xiao
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, PR China; Guangxi Key Laboratory of Karst Ecological Processes and Services, Huanjiang 547100, PR China; Huanjiang Observation and Research Station for Karst Ecosystems, Chinese Academy of Sciences, Huanjiang 547100, PR China
| | - Wei Zhang
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, PR China; Guangxi Industrial Technology Research Institute for Karst Rocky Desertification Control, Nanning 530012, PR China; Guangxi Key Laboratory of Karst Ecological Processes and Services, Huanjiang 547100, PR China; Huanjiang Observation and Research Station for Karst Ecosystems, Chinese Academy of Sciences, Huanjiang 547100, PR China
| | - Kelin Wang
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, PR China; Guangxi Key Laboratory of Karst Ecological Processes and Services, Huanjiang 547100, PR China; Huanjiang Observation and Research Station for Karst Ecosystems, Chinese Academy of Sciences, Huanjiang 547100, PR China.
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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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45
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Pausch J, Holz M, Zhu B, Cheng W. Rhizosphere priming promotes plant nitrogen acquisition by microbial necromass recycling. PLANT, CELL & ENVIRONMENT 2024; 47:1987-1996. [PMID: 38369964 DOI: 10.1111/pce.14858] [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: 06/04/2023] [Revised: 02/02/2024] [Accepted: 02/04/2024] [Indexed: 02/20/2024]
Abstract
Nitrogen availability in the rhizosphere relies on root-microorganism interactions, where root exudates trigger soil organic matter (SOM) decomposition through the rhizosphere priming effect (RPE). Though microbial necromass contribute significantly to organically bound soil nitrogen (N), the role of RPEs in regulating necromass recycling and plant nitrogen acquisition has received limited attention. We used 15N natural abundance as a proxy for necromass-N since necromass is enriched in 15N compared to other soil-N forms. We combined studies using the same experimental design for continuous 13CO2 labelling of various plant species and the same soil type, but considering top- and subsoil. RPE were quantified as difference in SOM-decomposition between planted and unplanted soils. Results showed higher plant N uptake as RPEs increased. The positive relationship between 15N-enrichment of shoots and roots and RPEs indicated an enhanced necromass-N turnover by RPE. Moreover, our data revealed that RPEs were saturated with increasing carbon (C) input via rhizodeposition in topsoil. In subsoil, RPEs increased linearly within a small range of C input indicating a strong effect of root-released C on decomposition rates in deeper soil horizons. Overall, this study confirmed the functional importance of rhizosphere C input for plant N acquisition through enhanced necromass turnover by RPEs.
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Affiliation(s)
- Johanna Pausch
- Agroecology, BayCEER, University of Bayreuth, Bayreuth, Bayern, Germany
| | - Maire Holz
- Leibniz Centre for Agricultural Landscape Research (ZALF), Müncheberg, Germany
| | - 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
| | - Weixin Cheng
- Department of Environmental Studies, University of California, Santa Cruz, California, USA
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Liu X, Tian Y, Heinzle J, Salas E, Kwatcho-Kengdo S, Borken W, Schindlbacher A, Wanek W. Long-term soil warming decreases soil microbial necromass carbon by adversely affecting its production and decomposition. GLOBAL CHANGE BIOLOGY 2024; 30:e17379. [PMID: 39031669 DOI: 10.1111/gcb.17379] [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: 11/15/2023] [Revised: 05/14/2024] [Accepted: 05/31/2024] [Indexed: 07/22/2024]
Abstract
Microbial necromass carbon (MNC) accounts for a large fraction of soil organic carbon (SOC) in terrestrial ecosystems. Yet our understanding of the fate of this large carbon pool under long-term warming is uncertain. Here, we show that 14 years of soil warming (+4°C) in a temperate forest resulted in a reduction in MNC by 11% (0-10 cm) and 33% (10-20 cm). Warming caused a decrease in the content of MNC due to a decline in microbial biomass carbon and reduced microbial carbon use efficiency. This reduction was primarily caused by warming-induced limitations in available soil phosphorus, which, in turn, constrained the production of microbial biomass. Conversely, warming increased the activity of soil extracellular enzymes, specifically N-acetylglucosaminidase and leucine aminopeptidase, which accelerated the decomposition of MNC. These findings collectively demonstrate that decoupling of MNC formation and decomposition underlie the observed MNC loss under climate warming, which could affect SOC content in temperate forest ecosystems more widespread.
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Affiliation(s)
- Xiaofei Liu
- Division of Terrestrial Ecosystem Research, Department of Microbiology and Ecosystem Science, Center of Microbiology and Environmental Systems Science, University of Vienna, Vienna, Austria
- Doctoral School in Microbiology and Environmental Science, University of Vienna, Vienna, Austria
- Key Laboratory of Humid Subtropical Eco-geographical Process of Ministry of Education, School of Geographical Sciences, Fujian Normal University, Fuzhou, China
| | - Ye Tian
- Division of Terrestrial Ecosystem Research, Department of Microbiology and Ecosystem Science, Center of Microbiology and Environmental Systems Science, University of Vienna, Vienna, Austria
| | - Jakob Heinzle
- Department of Forest Ecology and Soils, Federal Research and Training Centre for Forests, Natural Hazards and Landscape - BFW, Vienna, Austria
| | - Erika Salas
- Division of Terrestrial Ecosystem Research, Department of Microbiology and Ecosystem Science, Center of Microbiology and Environmental Systems Science, University of Vienna, Vienna, Austria
| | - Steve Kwatcho-Kengdo
- Department of Soil Ecology, Bayreuth Center of Ecology and Environmental Research (Bayceer), University of Bayreuth, Bayreuth, Germany
| | - Werner Borken
- Department of Soil Ecology, Bayreuth Center of Ecology and Environmental Research (Bayceer), University of Bayreuth, Bayreuth, Germany
| | - Andreas Schindlbacher
- Department of Forest Ecology and Soils, Federal Research and Training Centre for Forests, Natural Hazards and Landscape - BFW, Vienna, Austria
| | - Wolfgang Wanek
- Division of Terrestrial Ecosystem Research, Department of Microbiology and Ecosystem Science, Center of Microbiology and Environmental Systems Science, University of Vienna, Vienna, Austria
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Pérez‐Pazos E, Beidler KV, Narayanan A, Beatty BH, Maillard F, Bancos A, Heckman KA, Kennedy PG. Fungi rather than bacteria drive early mass loss from fungal necromass regardless of particle size. ENVIRONMENTAL MICROBIOLOGY REPORTS 2024; 16:e13280. [PMID: 38922748 PMCID: PMC11194057 DOI: 10.1111/1758-2229.13280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 04/30/2024] [Indexed: 06/28/2024]
Abstract
Microbial necromass is increasingly recognized as an important fast-cycling component of the long-term carbon present in soils. To better understand how fungi and bacteria individually contribute to the decomposition of fungal necromass, three particle sizes (>500, 250-500, and <250 μm) of Hyaloscypha bicolor necromass were incubated in laboratory microcosms inoculated with individual strains of two fungi and two bacteria. Decomposition was assessed after 15 and 28 days via necromass loss, microbial respiration, and changes in necromass pH, water content, and chemistry. To examine how fungal-bacterial interactions impact microbial growth on necromass, single and paired cultures of bacteria and fungi were grown in microplates containing necromass-infused media. Microbial growth was measured after 5 days through quantitative PCR. Regardless of particle size, necromass colonized by fungi had higher mass loss and respiration than both bacteria and uninoculated controls. Fungal colonization increased necromass pH, water content, and altered chemistry, while necromass colonized by bacteria remained mostly unaltered. Bacteria grew significantly more when co-cultured with a fungus, while fungal growth was not significantly affected by bacteria. Collectively, our results suggest that fungi act as key early decomposers of fungal necromass and that bacteria may require the presence of fungi to actively participate in necromass decomposition.
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Affiliation(s)
- Eduardo Pérez‐Pazos
- Ecology, Evolution, and Behavior Graduate ProgramUniversity of MinnesotaSt. PaulMinnesotaUSA
- Department of Plant and Microbial BiologyUniversity of MinnesotaSt. PaulMinnesotaUSA
| | - Katilyn V. Beidler
- Department of Plant and Microbial BiologyUniversity of MinnesotaSt. PaulMinnesotaUSA
| | - Achala Narayanan
- Department of Plant and Microbial BiologyUniversity of MinnesotaSt. PaulMinnesotaUSA
| | - Briana H. Beatty
- Department of Plant and Microbial BiologyUniversity of MinnesotaSt. PaulMinnesotaUSA
| | - François Maillard
- Microbial Ecology Group, Department of BiologyLund UniversityLundSweden
| | - Alexandra Bancos
- Department of Plant and Microbial BiologyUniversity of MinnesotaSt. PaulMinnesotaUSA
| | | | - Peter G. Kennedy
- Department of Plant and Microbial BiologyUniversity of MinnesotaSt. PaulMinnesotaUSA
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Liu S, Cheng X, Lv Y, Zhou Y, Zhou G, Shi Y. Responses of Soil Carbon and Microbial Residues to Degradation in Moso Bamboo Forest. PLANTS (BASEL, SWITZERLAND) 2024; 13:1526. [PMID: 38891335 PMCID: PMC11174951 DOI: 10.3390/plants13111526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 05/20/2024] [Accepted: 05/28/2024] [Indexed: 06/21/2024]
Abstract
Moso bamboo (Phyllostachys heterocycla cv. Pubescens) is known for its high capacity to sequester atmospheric carbon (C), which has a unique role to play in the fight against global warming. However, due to rising labor costs and falling bamboo prices, many Moso bamboo forests are shifting to an extensive management model without fertilization, resulting in gradual degradation of Moso bamboo forests. However, many Moso bamboo forests are being degraded due to rising labor costs and declining bamboo timber prices. To delineate the effect of degradation on soil microbial carbon sequestration, we instituted a rigorous analysis of Moso bamboo forests subjected to different degradation durations, namely: continuous management (CK), 5 years of degradation (D-5), and 10 years of degradation (D-10). Our inquiry encompassed soil strata at 0-20 cm and 20-40 cm, scrutinizing alterations in soil organic carbon(SOC), water-soluble carbon(WSOC), microbial carbon(MBC)and microbial residues. We discerned a positive correlation between degradation and augmented levels of SOC, WSOC, and MBC across both strata. Furthermore, degradation escalated concentrations of specific soil amino sugars and microbial residues. Intriguingly, extended degradation diminished the proportional contribution of microbial residuals to SOC, implying a possible decline in microbial activity longitudinally. These findings offer a detailed insight into microbial C processes within degraded bamboo ecosystems.
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Affiliation(s)
- Shuhan Liu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an 311300, China
- Zhejiang Province Key Think Tank, Institute of Ecological Civilization, Zhejiang A&F University, Lin’an 311300, China
- Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A&F University, Lin’an 311300, China
- School of Environmental and Resources Science, Zhejiang A&F University, Lin’an 311300, China
| | - Xuekun Cheng
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an 311300, China
- Zhejiang Province Key Think Tank, Institute of Ecological Civilization, Zhejiang A&F University, Lin’an 311300, China
- Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A&F University, Lin’an 311300, China
- School of Environmental and Resources Science, Zhejiang A&F University, Lin’an 311300, China
| | - Yulong Lv
- Forestry Bureau of Anji County, An’ji 313300, China
| | - Yufeng Zhou
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an 311300, China
- Zhejiang Province Key Think Tank, Institute of Ecological Civilization, Zhejiang A&F University, Lin’an 311300, China
- Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A&F University, Lin’an 311300, China
- School of Environmental and Resources Science, Zhejiang A&F University, Lin’an 311300, China
| | - Guomo Zhou
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an 311300, China
- Zhejiang Province Key Think Tank, Institute of Ecological Civilization, Zhejiang A&F University, Lin’an 311300, China
- Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A&F University, Lin’an 311300, China
- School of Environmental and Resources Science, Zhejiang A&F University, Lin’an 311300, China
| | - Yongjun Shi
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin’an 311300, China
- Zhejiang Province Key Think Tank, Institute of Ecological Civilization, Zhejiang A&F University, Lin’an 311300, China
- Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province, Zhejiang A&F University, Lin’an 311300, China
- School of Environmental and Resources Science, Zhejiang A&F University, Lin’an 311300, China
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49
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Han L, Nan G, He X, Wang J, Zhao J, Zhang X. Soil moisture and soil organic carbon coupled effects in apple orchards on the Loess Plateau, China. Sci Rep 2024; 14:12281. [PMID: 38811638 PMCID: PMC11136960 DOI: 10.1038/s41598-024-63039-2] [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: 02/09/2024] [Accepted: 05/23/2024] [Indexed: 05/31/2024] Open
Abstract
A large number of economic forests, especially apple orchards (AOs) in the Loess Plateau region of China, have been planted to develop the local economy and increase the income of farmers. The two main constraints preventing AOs on the Loess Plateau from developing sustainably and producing a high and steady yield are soil moisture content (SMC) and soil organic carbon (SOC). Nevertheless, little is currently known about the contributions of roots to these changes in the soil profile and the temporal modes of the SMC-SOC coupled effects. In our research, we analyzed the dynamic changes in SMC and SOC in AOs of various years in northern Shaanxi Province, as well as the coupled relationship between the two, and attempted to describe the function of roots in these changes. Research have shown: (1) As the age of the AOs increased, the SMC continued to decline throughout the 0-500 cm profile, especially at depths of 100-500 cm. SMC depletion mainly occurred in AOs aged 20 years (30.02%/year) and 30 years (31.18%/year). (2) Compared with abandoned land (AL), all the AOs except for the 6-year-old AO showed a carbon sequestration effect, and the carbon sequestration effect increased with age. The carbon sequestration rate of the 12-year-old AO was the highest and then decreased with age. Both surface and deeper soils showed better carbon sequestration, with a large amount of SOC being sequestered in deeper soil layers (> 100 cm). (3) The coupled effects of SMC and SOC varied with age and depth. The SMC in the deeper layers was significantly negatively correlated with SOC. Root dry weight density (RDWD) was significantly negatively correlated with SMC and significantly positively correlated with SOC. Path analysis suggested that SMC directly affects SOC at different soil depths, and regulates SOC by affecting RDWD, but these effects are significantly different at different depths. Therefore, we propose that management of AO should focus on the moisture deficit and carbon sequestration capabilities of deeper soils to ensure the sustainability of water use in AOs and the stability of agricultural carbon sequestration on the Loess Plateau.
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Affiliation(s)
- Lei Han
- School of Life Sciences, Yan'an University, Yan'an, 716000, China
- Engineering Research Center of Microbial Resources Development and Green Recycling, University of Shaanxi Province, Yan'an, 716000, Shaanxi, China
| | - Guowei Nan
- School of Life Sciences, Yan'an University, Yan'an, 716000, China.
- Engineering Research Center of Microbial Resources Development and Green Recycling, University of Shaanxi Province, Yan'an, 716000, Shaanxi, China.
| | - Xinyu He
- School of Life Sciences, Yan'an University, Yan'an, 716000, China
- Engineering Research Center of Microbial Resources Development and Green Recycling, University of Shaanxi Province, Yan'an, 716000, Shaanxi, China
| | - Jinghui Wang
- School of Life Sciences, Yan'an University, Yan'an, 716000, China
- Engineering Research Center of Microbial Resources Development and Green Recycling, University of Shaanxi Province, Yan'an, 716000, Shaanxi, China
| | - Jirong Zhao
- School of Life Sciences, Yan'an University, Yan'an, 716000, China
- Engineering Research Center of Microbial Resources Development and Green Recycling, University of Shaanxi Province, Yan'an, 716000, Shaanxi, China
| | - Xiangqian Zhang
- School of Life Sciences, Yan'an University, Yan'an, 716000, China
- Engineering Research Center of Microbial Resources Development and Green Recycling, University of Shaanxi Province, Yan'an, 716000, Shaanxi, China
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Weng ZH, Kopittke PM, Schweizer S, Jin J, Armstrong R, Rose M, Zheng Y, Franks A, Tang C. Shining a Light on How Soil Organic Carbon Behaves at Fine Scales under Long-Term Elevated CO 2: An 8 Year Free-Air Carbon Dioxide Enrichment Study. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:8724-8735. [PMID: 38717952 DOI: 10.1021/acs.est.3c10680] [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: 05/22/2024]
Abstract
Building and protecting soil organic carbon (SOC) are critical to agricultural productivity, soil health, and climate change mitigation. We aim to understand how mechanisms at the organo-mineral interfaces influence SOC persistence in three contrasting soils (Luvisol, Vertisol, and Calcisol) under long-term free air CO2 enrichment conditions. A continuous wheat-field pea-canola rotation was maintained. For the first time, we provided evidence to a novel notion that persistent SOC is molecularly simple even under elevated CO2 conditions. We found that the elevated CO2 condition did not change the total SOC content or C forms compared with the soils under ambient CO2 as identified by synchrotron-based soft X-ray analyses. Furthermore, synchrotron-based infrared microspectroscopy confirmed a two-dimensional microscale distribution of similar and less diverse C forms in intact microaggregates under long-term elevated CO2 conditions. Strong correlations between the distribution of C forms and O-H groups of clays can explain the steady state of the total SOC content. However, the correlations between C forms and clay minerals were weakened in the coarse-textured Calcisol under long-term elevated CO2. Our findings suggested that we should emphasize identifying management practices that increase the physical protection of SOC instead of increasing complexity of C. Such information is valuable in developing more accurate C prediction models under elevated CO2 conditions and shift our thinking in developing management practices for maintaining and building SOC for better soil fertility and future environmental sustainability.
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Affiliation(s)
- Zhe H Weng
- Department of Animal, Plant & Soil Sciences, Centre for AgriBioscience, La Trobe University, Melbourne, Victoria 3086, Australia
- School of Agriculture and Food Sciences, The University of Queensland, St. Lucia, Queensland 4072, Australia
- School of Agriculture, Food, and Wine, The University of Adelaide, Urrbrae, South Australia 5064, Australia
| | - Peter M Kopittke
- School of Agriculture and Food Sciences, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Steffen Schweizer
- School of Life Sciences, Technical University of Munich, Freising 85354, Germany
| | - Jian Jin
- Department of Animal, Plant & Soil Sciences, Centre for AgriBioscience, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Roger Armstrong
- Agriculture Victoria Research, Department of Energy, Environment and Climate Action, Horsham, Victoria 3401, Australia
| | - Michael Rose
- NSW Department of Primary Industries, Wollongbar Primary Industries Institute, Wollongbar, New South Wales 2477, Australia
| | - Yunyun Zheng
- Department of Animal, Plant & Soil Sciences, Centre for AgriBioscience, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Ashley Franks
- Department of Microbiology, Anatomy, Physiology and Pharmacology, La Trobe University, Melbourne, Victoria 3086, Australia
- Centre for Future Landscapes, La Trobe University, Melbourne, Victoria 3086, Australia
- La Trobe Institute for Sustainable Agriculture and Food, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Caixian Tang
- Department of Animal, Plant & Soil Sciences, Centre for AgriBioscience, La Trobe University, Melbourne, Victoria 3086, Australia
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