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Li J, Liu Y, Cui X, Liu R, Du Z, Chai H, He Y, Chen H, Wu H, Zhou X. Mycorrhizal mediation of soil carbon in permafrost regions depends on soil nutrient stoichiometry and physical protection. Sci Total Environ 2024; 920:170907. [PMID: 38350579 DOI: 10.1016/j.scitotenv.2024.170907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 02/06/2024] [Accepted: 02/09/2024] [Indexed: 02/15/2024]
Abstract
Mycorrhizal associations are considered as one of the key drivers for soil carbon (C) accumulation and stability. However, how mycorrhizal associations influence soil organic C (SOC) and its fractions (i.e., particulate organic C [POC] and mineral-associated organic C [MAOC]) remain unclear. In this study, we examined effects of plant mycorrhizal associations with arbuscular mycorrhiza (AM), ectomycorrhiza (ECM), and their mixture (Mixed) on SOC and its fractions as well as soil stoichiometric ratios across 800-km transect in permafrost regions. Our results showed that soil with only ECM-associated trees had significantly higher SOC and POC compared to only AM-associated tree species, while soil in Mixed plots with both AM- and ECM- associated trees tend to be somewhat in the middle. Using structural equation models, we found that mycorrhizal association significantly influenced SOC and its fraction (i.e., POC, MAOC) indirectly through soil stoichiometric ratios (C:N, C:P, and N:P). These results suggest that selecting ECM tree species, characterized by a "slow cycling" nutrient uptake strategy, can effectively enhance accumulation of SOC and its fractions in permafrost forest ecosystems. Our findings provide novel insights for quantitatively assessing the influence of mycorrhiza-associated tree species on the management of soil C pool and biogeochemical cycling.
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Affiliation(s)
- Jie Li
- Northeast Asia ecosystem Carbon sink research Center (NACC), Center for Ecological Research, Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Yuan Liu
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing 48824, USA
| | - Xiaoyang Cui
- Northeast Asia ecosystem Carbon sink research Center (NACC), Center for Ecological Research, Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Ruiqiang Liu
- Northeast Asia ecosystem Carbon sink research Center (NACC), Center for Ecological Research, Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Zhenggang Du
- Northeast Asia ecosystem Carbon sink research Center (NACC), Center for Ecological Research, Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Hua Chai
- Northeast Asia ecosystem Carbon sink research Center (NACC), Center for Ecological Research, Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Yanghui He
- Northeast Asia ecosystem Carbon sink research Center (NACC), Center for Ecological Research, Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Hongyang Chen
- Northeast Asia ecosystem Carbon sink research Center (NACC), Center for Ecological Research, Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Han Wu
- Northeast Asia ecosystem Carbon sink research Center (NACC), Center for Ecological Research, Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Xuhui Zhou
- Northeast Asia ecosystem Carbon sink research Center (NACC), Center for Ecological Research, Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin 150040, China.
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Zhang S, Zhou X, Chen Y, Du F, Zhu B. Soil organic carbon fractions in China: Spatial distribution, drivers, and future changes. Sci Total Environ 2024; 919:170890. [PMID: 38346657 DOI: 10.1016/j.scitotenv.2024.170890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/08/2024] [Accepted: 02/08/2024] [Indexed: 02/17/2024]
Abstract
Soil is the world's largest terrestrial carbon pool and plays an important role in the global carbon cycle, which may be greatly affected by global change. Recently, research frameworks have indicated that division of soil organic carbon (SOC) into two forms particulate organic carbon (POC) and mineral-associated organic carbon (MAOC) can help us better understand SOC cycle. However, there is a lack of the use of meta-analysis combined with machine learning models to explore the spatial distribution of SOC fractions at large scales. Based on 356 studies conducted in Chinese terrestrial ecosystems, we performed a meta-analysis of extracted data and measured data combined with machine learning models to reveal the spatial distribution of soil POC density (POCD) and MAOC density (MAOCD) and the main drivers of variations in POCD and MAOCD. Our study demonstrated that POCD and MAOCD in China's soil were 3.24 and 2.61 kg m-2, with stocks of 31.10 and 25.06 Pg, respectively. Climate, soil, and vegetation properties together explained 44.9 % and 27.2 % of the variation in POCD and MAOCD, respectively. Climate was more important than other variables in controlling the changes in POCD, with mean annual temperature being specifically the main driver. Soil, however, was more important than other variables in controlling changes in MAOCD, with soil clay content being the main driver. Compared to the other climate scenarios, the rate of change in POCD and MAOCD was higher with a 1.5 °C increase in temperature. In the future, we should pay more attention to the impact of climate change on POCD, which provides a theoretical basis for achieving the "dual-carbon" target. Our study contributes to the understanding of the potential mechanisms of the changes in SOC fractions under global change and provides useful information for future prediction models to simulate the impacts of global change.
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Affiliation(s)
- Shihang Zhang
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, 610041 Chengdu, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaobing Zhou
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Yusen Chen
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Fan Du
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Bo Zhu
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, 610041 Chengdu, China.
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Soinne H, Hyyrynen M, Jokubė M, Keskinen R, Hyväluoma J, Pihlainen S, Hyytiäinen K, Miettinen A, Rasa K, Lemola R, Virtanen E, Heinonsalo J, Heikkinen J. High organic carbon content constricts the potential for stable organic carbon accrual in mineral agricultural soils in Finland. J Environ Manage 2024; 352:119945. [PMID: 38215596 DOI: 10.1016/j.jenvman.2023.119945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 12/01/2023] [Accepted: 12/23/2023] [Indexed: 01/14/2024]
Abstract
Sequestering carbon into agricultural soils is considered as a means of mitigating climate change. We used agronomic soil test results representing c. 95% of the farmed land area in Finland to estimate the potential of the uppermost 15 cm soil layer of mineral agricultural soils to sequester organic carbon (OC) and to contribute to the mitigation of climate change. The estimation of the maximum capacity of mineral matter to protect OC in stable mineral-associated form was based on the theory that clay and fine-sized (fines = clay + silt) particles have a limited capacity to protect OC. In addition, we used the clay/OC and fines/OC ratios to identify areas with a risk of erosion and reduced productivity, thus indicating priority areas potentially benefitting from the increased soil OC contents. We found that 32-40% of the mineral agricultural soils in Finland have the potential to further accumulate mineral-associated OC (MOC), while in the majority of soils, the current OC stock in the uppermost 15 cm exceeded the capacity of mineral matter to protect OC. The nationwide soil OC sequestration potential of the uppermost 15 cm in mineral agricultural soils ranged between 0.21 and 0.26 Tg, which corresponds to less than 2% of annual greenhouse gas emissions in Finland. The fields with the highest potential for SOC accrual were found in the southern and southwestern parts of the country, including some of the most intensively cultivated high-clay soils. Although the nationwide potential for additional OC sequestration was estimated to be relatively small, the current OC storage in Finnish arable mineral soils (0-15 cm) is large, 128 Tg. Farming practices enabling maximum OC input into the soil play an important role as a tool for mitigating the loss of carbon from high-OC soils in the changing climate. Furthermore, especially in high-clay areas with potential for MOC accrual, efforts to increase soil OC could help improve soil structural stability and therefore reduce erosion and the loss of nutrients to the aquatic environments.
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Affiliation(s)
- Helena Soinne
- Natural Resources Institute Finland Luke, Latokartanonkaari 9, FI-00790, Helsinki, Finland.
| | - Matti Hyyrynen
- Natural Resources Institute Finland Luke, Latokartanonkaari 9, FI-00790, Helsinki, Finland
| | - Medilė Jokubė
- Department of Economics and Management, University of Helsinki, PO Box 27, Fl-00014, Helsinki, Finland
| | - Riikka Keskinen
- Natural Resources Institute Finland Luke, Tietotie 4, FI-31600, Jokioinen, Finland
| | - Jari Hyväluoma
- Natural Resources Institute Finland Luke, Tietotie 4, FI-31600, Jokioinen, Finland; Häme University of Applied Sciences HAMK, Mustialantie 105, FI-31310, Mustiala, Finland
| | - Sampo Pihlainen
- Finnish Environment Institute Syke, Latokartanonkaari 11, FI-00790, Helsinki, Finland
| | - Kari Hyytiäinen
- Department of Economics and Management, University of Helsinki, PO Box 27, Fl-00014, Helsinki, Finland
| | - Arttu Miettinen
- Department of Physics, Nanoscience Center, and School of Resource Wisdom, University of Jyväskylä, PO Box 35, FI-40014, Jyväskylä, Finland
| | - Kimmo Rasa
- Natural Resources Institute Finland Luke, Tietotie 4, FI-31600, Jokioinen, Finland
| | - Riitta Lemola
- Natural Resources Institute Finland Luke, Tietotie 4, FI-31600, Jokioinen, Finland
| | - Eetu Virtanen
- Soilfood ltd, Viikinkaari 6, FI-00790, Helsinki, Finland
| | - Jussi Heinonsalo
- Institute for Atmospheric and Earth System Research (INAR)/Forest sciences, University of Helsinki, PO Box 27, FI-00014, Helsinki, Finland
| | - Jaakko Heikkinen
- Natural Resources Institute Finland Luke, Tietotie 4, FI-31600, Jokioinen, Finland
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Xu Y, Ge X, Gao G, Yang Y, Hu Y, Li Z, Zhou B. Microbial pathways driving stable soil organic carbon change in abandoned Moso bamboo forests in southeast China. J Environ Manage 2023; 345:118890. [PMID: 37659374 DOI: 10.1016/j.jenvman.2023.118890] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 08/18/2023] [Accepted: 08/27/2023] [Indexed: 09/04/2023]
Abstract
Mineral-associated organic carbon (MOC) is a stable component of the soil carbon (C) pool, critical to realize carbon sequestration and coping with climate change. Many Moso bamboo (Phyllostachys edulis) forests in subtropical and tropical areas that used to be intensively managed have been left unmanaged. Still, studies on MOC changes occurring during the transition from intensive management to unmanagement are lacking. Besides, the understanding of the role of microorganisms in MOC accumulation is far from satisfactory. Based on the combination of field investigation and laboratory analysis of 40 Moso bamboo forest sampling plots with different unmanaged chronosequence's in southeast China, we observed the MOC content in Moso bamboo forests left unmanaged for 2-5 years had decreased, whereas that in forests left unmanaged for 11-14 years had increased compared with that in intensively managed forests. Specifically, the MOC contents in forests left unmanaged for 11-14 years were significantly higher than in those under intensive management or unmanaged for 2-5 years. Moreover, we found that microorganisms drove MOC change through two different pathways: (i) more microorganisms led to more soil nutrients, which led to more amino sugars, ultimately resulting in the accumulation of MOC, and (ii) microorganisms promoted the accumulation of MOC by influencing the content of metal oxides (poorly crystalline aluminum oxides and free aluminum oxides). We believe that ignoring the interaction between microorganisms and metal oxides may lead to uncertainty in evaluating the relative contribution of microbial residues to MOC.
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Affiliation(s)
- Yaowen Xu
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, 311400, China; Qianjiangyuan Forest Ecosystem Research Station, National Forestry and Grassland Administration of China, Hangzhou, 311400, China
| | - Xiaogai Ge
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, 311400, China; Qianjiangyuan Forest Ecosystem Research Station, National Forestry and Grassland Administration of China, Hangzhou, 311400, China
| | - Ge Gao
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, 311400, China; Qianjiangyuan Forest Ecosystem Research Station, National Forestry and Grassland Administration of China, Hangzhou, 311400, China
| | - Yuhao Yang
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, 311400, China; Qianjiangyuan Forest Ecosystem Research Station, National Forestry and Grassland Administration of China, Hangzhou, 311400, China; College of Forestry, Northeast Forestry University, Harbin, 150040, China
| | - Yutao Hu
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, 311400, China; Qianjiangyuan Forest Ecosystem Research Station, National Forestry and Grassland Administration of China, Hangzhou, 311400, China; College of Forestry, Northeast Forestry University, Harbin, 150040, China
| | - Zhengcai Li
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, 311400, China; Qianjiangyuan Forest Ecosystem Research Station, National Forestry and Grassland Administration of China, Hangzhou, 311400, China.
| | - Benzhi Zhou
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, 311400, China; Qianjiangyuan Forest Ecosystem Research Station, National Forestry and Grassland Administration of China, Hangzhou, 311400, China.
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Li T, Cheng H, Li Y, Mou Z, Zhu X, Wu W, Zhang J, Kuang L, Wang J, Hui D, Lambers H, Sardans J, Peñuelas J, Ren H, Mohti AB, Liang N, Liu Z. Divergent accumulation of amino sugars and lignins mediated by soil functional carbon pools under tropical forest conversion. Sci Total Environ 2023; 881:163204. [PMID: 37044342 DOI: 10.1016/j.scitotenv.2023.163204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/27/2023] [Accepted: 03/28/2023] [Indexed: 04/14/2023]
Abstract
Tropical primary forests are being destroyed at an alarming rate and converted for other land uses which is expected to greatly influence soil carbon (C) cycling. However, our understanding of how tropical forest conversions affect the accumulation of compounds in soil functional C pools remains unclear. Here, we collected soils from primary forests (PF), secondary forests (SF), oil-palm (OP), and rubber plantations (RP), and assessed the accumulation of plant- and microbial-derived compounds within soil organic carbon (SOC), particulate (POC) and mineral-associated (MAOC) organic C. PF conversion to RP greatly decreased SOC, POC, and MAOC concentrations, whereas conversion to SF increased POC concentrations and decreased MAOC concentrations, and conversion to OP only increased POC concentrations. PF conversion to RP decreased lignin concentrations and increased amino sugar concentrations in SOC pools which increased the stability of SOC, whereas conversion to SF only increased the lignin concentrations in POC, and conversion to OP just increased lignin concentrations in POC and decreased it in MAOC. We observed divergent dynamics of amino sugars (decrease) and lignin (increase) in SOC with increasing SOC. Only lignin concentrations increased in POC with increasing POC and amino sugars concentrations decreased in MAOC with increasing MAOC. Conversion to RP significantly decreased soil enzyme activities and microbial biomasses. Lignin accumulation was associated with microbial properties, whereas amino sugar accumulation was mainly associated with soil nutrients and stoichiometries. These results suggest that the divergent accumulation of plant- and microbial-derived C in SOC was delivered by the distribution and original composition of functional C pools under forest conversions. Forest conversions changed the formation and stabilization processes of SOC in the long run which was associated with converted plantations and management. The important roles of soil nutrients and stoichiometry also provide a natural-based solution to enhance SOC sequestration via nutrient management in tropical forests.
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Affiliation(s)
- Tengteng Li
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems/CAS Engineering Laboratory for Vegetation Ecosystem Restoration on Islands and Coastal Zones, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Guangzhou 510650, China; South China National Botanical Garden, Guangzhou 510650, China
| | - Hao Cheng
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yue Li
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems/CAS Engineering Laboratory for Vegetation Ecosystem Restoration on Islands and Coastal Zones, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Guangzhou 510650, China; South China National Botanical Garden, Guangzhou 510650, China
| | - Zhijian Mou
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems/CAS Engineering Laboratory for Vegetation Ecosystem Restoration on Islands and Coastal Zones, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Guangzhou 510650, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaomin Zhu
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems/CAS Engineering Laboratory for Vegetation Ecosystem Restoration on Islands and Coastal Zones, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Guangzhou 510650, China; South China National Botanical Garden, Guangzhou 510650, China
| | - Wenjia Wu
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems/CAS Engineering Laboratory for Vegetation Ecosystem Restoration on Islands and Coastal Zones, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Guangzhou 510650, China; South China National Botanical Garden, Guangzhou 510650, China
| | - Jing Zhang
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems/CAS Engineering Laboratory for Vegetation Ecosystem Restoration on Islands and Coastal Zones, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Guangzhou 510650, China; South China National Botanical Garden, Guangzhou 510650, China
| | - Luhui Kuang
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems/CAS Engineering Laboratory for Vegetation Ecosystem Restoration on Islands and Coastal Zones, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Guangzhou 510650, China; South China National Botanical Garden, Guangzhou 510650, China
| | - Jun Wang
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems/CAS Engineering Laboratory for Vegetation Ecosystem Restoration on Islands and Coastal Zones, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Guangzhou 510650, China; South China National Botanical Garden, 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
| | - Jordi Sardans
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Cerdanyola del Valles, Catalonia 08193, Spain; CREAF, Cerdanyola del Valles, Catalonia 08193, Spain
| | - Josep Peñuelas
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Cerdanyola del Valles, Catalonia 08193, Spain; CREAF, Cerdanyola del Valles, Catalonia 08193, Spain
| | - Hai Ren
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems/CAS Engineering Laboratory for Vegetation Ecosystem Restoration on Islands and Coastal Zones, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Guangzhou 510650, China; South China National Botanical Garden, Guangzhou 510650, China
| | - Azian Binti Mohti
- Forestry Environment Division, Forest Research Institute Malaysia, 52109 Kepong, Selangor, Malaysia
| | - Naishen Liang
- Earth System Division, National Institute for Environmental Studies, Tsukuba, Ibaraki 305-8506, Japan.
| | - Zhanfeng Liu
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems/CAS Engineering Laboratory for Vegetation Ecosystem Restoration on Islands and Coastal Zones, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Guangzhou 510650, China; South China National Botanical Garden, Guangzhou 510650, China.
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Zhang F, Chen X, Yao S, Ye Y, Zhang B. Responses of soil mineral-associated and particulate organic carbon to carbon input: A meta-analysis. Sci Total Environ 2022; 829:154626. [PMID: 35306064 DOI: 10.1016/j.scitotenv.2022.154626] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 02/16/2022] [Accepted: 03/13/2022] [Indexed: 06/14/2023]
Abstract
A minor change of soil organic carbon (SOC) greatly influences atmospheric carbon dioxide concentration and climate change. Exogenous carbon (C) input into soils can induce SOC decomposition or sequestration. The response of SOC to C input can be better understood when SOC is separated into mineral-associated (MAOC) and particulate (POC) organic carbon. The objective of this study is to explore whether exogenous C input promote MAOC and POC increase or decrease and the controlling factors. We gained 1181 observations from 17 studies for this meta-analysis. The effect sizes of exogenous C input on MAOC and POC content, and MAOC decomposition were calculated. The key factors influencing the effect sizes were explored through subgroup analysis. Potential publication bias was explored by using funnel plots, trim and fill method, and Egger's test. Exogenous C input significantly increased MAOC and POC content, although promoted MAOC decomposition. The effect sizes were larger for MAOC content than for POC content irrespective of soil and substrate properties and experiment methods. The effects of C input on MAOC and POC content were more pronounced in forest soils, and depended on the C and nitrogen (N) content in soil and substrates as well as experiment methods. The effect size of C input on MAOC decomposition were larger with substrate input of below 200 g C kg-1 in specific soils. The sensitivity analysis carried out by removing one observation indicated our results were robust. In conclusion, exogenous C input increases MAOC and POC content although stimulate MAOC decomposition, and the effect sizes were influenced mainly by ecosystem type, carbon and nitrogen content of substrates and soils, and fractionation methods. The findings indicate the importance of C and N content in substrates and soils in controlling the response of SOC rather than the ratio of C to N.
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Affiliation(s)
- Futao Zhang
- Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin 150081, China; National Engineering Laboratory for Improving Fertility of Arable Soils, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xi Chen
- National Engineering Laboratory for Improving Fertility of Arable Soils, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Shuihong Yao
- National Engineering Laboratory for Improving Fertility of Arable Soils, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yang Ye
- Department of Traditional Chinese Medicine, Peking University Third Hospital, Beijing 100191, China.
| | - Bin Zhang
- National Engineering Laboratory for Improving Fertility of Arable Soils, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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Chen J, Ji C, Fang J, He H, Zhu B. Dynamics of microbial residues control the responses of mineral-associated soil organic carbon to N addition in two temperate forests. Sci Total Environ 2020; 748:141318. [PMID: 32814291 DOI: 10.1016/j.scitotenv.2020.141318] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 07/23/2020] [Accepted: 07/27/2020] [Indexed: 06/11/2023]
Abstract
Numerous studies have investigated the impact of nitrogen (N) addition on ecosystem carbon (C) storage and cycling. However, how N addition regulates the dynamics of different soil organic carbon (SOC) fractions and the underlying microbial mechanisms remain unclear. In this study, we assessed microbial controls (through biomass, residues and enzymes) of different SOC fractions (particulate organic carbon, POC and mineral-associated organic carbon, MAOC) in response to six years of N addition (50 kg N ha-1 yr-1) in two temperate forests (Betula platyphylla vs. Quercus wutaishanica) in Northern China. Plant inputs (root biomass and leaf litterfall) and soil chemistry (pH, extractable inorganic N, and exchangeable cations) were unaltered by N addition in both forests. In the Q. wutaishanica forest, microbial biomass, residues, and enzymes were not sensitive to N addition, which may explain the lack of response in SOC and two fractions (POC and MAOC). However, in the B. platyphylla forest, although microbial biomass and enzymes as well as SOC and POC did not significantly change after N addition, both microbial residues (amino sugars) and MAOC significantly increased after N addition. Moreover, there was a strong positive correlation between microbial residues and MAOC pool within or across the two forests. Collectively, these results suggest that the dynamics of microbial residues play a crucial role in controlling the response of mineral-associated SOC to N addition in these two forests. Separating bulk soil into distinct functional pools and considering microbial residues should help reveal the nuanced response of soil C dynamics under N addition.
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Affiliation(s)
- Jungang Chen
- Institute of Ecology, College of Urban and Environmental Sciences, Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing 100871, China
| | - Chengjun Ji
- Institute of Ecology, College of Urban and Environmental Sciences, Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing 100871, China
| | - Jingyun Fang
- Institute of Ecology, College of Urban and Environmental Sciences, Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing 100871, China
| | - Hongbo He
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
| | - Biao Zhu
- Institute of Ecology, College of Urban and Environmental Sciences, Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing 100871, China.
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Wang X, Toner BM, Yoo K. Mineral vs. organic matter supply as a limiting factor for the formation of mineral-associated organic matter in forest and agricultural soils. Sci Total Environ 2019; 692:344-353. [PMID: 31351278 DOI: 10.1016/j.scitotenv.2019.07.219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 07/12/2019] [Accepted: 07/14/2019] [Indexed: 06/10/2023]
Abstract
Physical and chemical interactions between soil organic matter (OM) and minerals is one of the primary mechanisms for stabilizing OM in terrestrial ecosystems. Focusing on OM association with mineral surfaces, this study sought to examine mineral-associated OM from the perspectives of both mineral surface characteristics and organic matter chemistry. The research was conducted at paired-sites under North American Mid-Atlantic Coastal forest and crop production with shared environmental factors. Using carbon (C) and nitrogen (N) 1s micro- X-ray absorption near-edge fine structure (XANES) spectroscopy, we investigated the amounts and types of mineral-associated OM. Mineral specific surface area (SSA) of bulk soil was determined for three conditions: untreated, post OM removal and post iron (Fe) (oxyhydr)oxides removal. Amounts of mineral-associated OM were smaller in the agricultural soil, where greater SSA sourced from clay-sized phyllosilicates and Fe (oxyhydr)oxide minerals did not result in greater OM coverage of the mineral surface area. Although agricultural surface soil showed less abundance of phenolic C, speciation of mineral-associated OM did not differ between comparable horizons. Our results suggest that despite the plow-derived mixing of soil, which increased SSA and secondary minerals available to interact physically and chemically with OM in the plowed layer, the formation of mineral-associated OM in agricultural soil is ultimately limited by available OM.
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Affiliation(s)
- Xiang Wang
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; Department of Soil, Water, and Climate, University of Minnesota-Twin Cities, Saint Paul, MN 55108, USA
| | - Brandy M Toner
- Department of Soil, Water, and Climate, University of Minnesota-Twin Cities, Saint Paul, MN 55108, USA
| | - Kyungsoo Yoo
- Department of Soil, Water, and Climate, University of Minnesota-Twin Cities, Saint Paul, MN 55108, USA.
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Cai A, Feng W, Zhang W, Xu M. Climate, soil texture, and soil types affect the contributions of fine-fraction-stabilized carbon to total soil organic carbon in different land uses across China. J Environ Manage 2016; 172:2-9. [PMID: 26905446 DOI: 10.1016/j.jenvman.2016.02.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 02/04/2016] [Accepted: 02/05/2016] [Indexed: 06/05/2023]
Abstract
Mineral-associated organic carbon (MOC), that is stabilized by fine soil particles (i.e., silt plus clay, <53 μm), is important for soil organic carbon (SOC) persistence and sequestration, due to its large contribution to total SOC (TSOC) and long turnover time. Our objectives were to investigate how climate, soil type, soil texture, and agricultural managements affect MOC contributions to TSOC in China. We created a dataset from 103 published papers, including 1106 data points pairing MOC and TSOC across three major land use types: cropland, grassland, and forest. Overall, the MOC/TSOC ratio ranged from 0.27 to 0.80 and varied significantly among soil groups in cropland, grassland, and forest. Croplands and forest exhibited significantly higher median MOC/TSOC ratios than in grassland. Moreover, forest and grassland soils in temperate regions had higher MOC/TSOC ratios than in subtropical regions. Furthermore, the MOC/TSOC ratio was much higher in ultisol, compared with the other soil types. Both the MOC content and MOC/TSOC ratio were positively correlated with the amount of fine fraction (silt plus clay) in soil, highlighting the importance of soil texture in stabilizing organic carbon across various climate zones. In cropland, different fertilization practices and land uses (e.g., upland, paddy, and upland-paddy rotation) significantly altered MOC/TSOC ratios, but not in cropping systems (e.g., mono- and double-cropping) characterized by climatic differences. This study demonstrates that the MOC/TSOC ratio is mainly driven by soil texture, soil types, and related climate and land uses, and thus the variations in MOC/TSOC ratios should be taken into account when quantitatively estimating soil C sequestration potential of silt plus clay particles on a large scale.
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Affiliation(s)
- Andong Cai
- Ministry of Agriculture Key Laboratory of Crop Nutrition and Fertilization, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Wenting Feng
- Department of Microbiology and Plant Biology, University of Oklahoma, 101 David L Boren Boulevard, Norman, OK 73019, USA
| | - Wenju Zhang
- Ministry of Agriculture Key Laboratory of Crop Nutrition and Fertilization, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China.
| | - Minggang Xu
- Ministry of Agriculture Key Laboratory of Crop Nutrition and Fertilization, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
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