A global meta-analysis of soil organic carbon in the Anthropocene

被引:0
作者
Damien Beillouin
Marc Corbeels
Julien Demenois
David Berre
Annie Boyer
Abigail Fallot
Frédéric Feder
Rémi Cardinael
机构
[1] UPR HortSys,CIRAD
[2] Univ Montpellier,HortSys
[3] CIRAD,AIDA
[4] Univ Montpellier,CIRAD
[5] CIRAD,CATIE
[6] IITA,CIRAD
[7] UPR AIDA,CIRDES
[8] Centro Agronómico Tropical de Investigación y Enseñanza,CIRAD
[9] UPR AIDA,SENS
[10] USPAE,CIRAD
[11] CIRAD,Recyclage et Risque
[12] DGDRS,CIRAD
[13] DIST,Department of Plant Production Sciences and Technologies
[14] UMR SENS,undefined
[15] Univ Montpellier,undefined
[16] CIRAD,undefined
[17] UPR Recyclage et Risque,undefined
[18] Univ Montpellier,undefined
[19] CIRAD,undefined
[20] UPR AIDA,undefined
[21] University of Zimbabwe,undefined
来源
Nature Communications | / 14卷
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摘要
Anthropogenic activities profoundly impact soil organic carbon (SOC), affecting its contribution to ecosystem services such as climate regulation. Here, we conducted a thorough review of the impacts of land-use change, land management, and climate change on SOC. Using second-order meta-analysis, we synthesized findings from 230 first-order meta-analyses comprising over 25,000 primary studies. We show that (i) land conversion for crop production leads to high SOC loss, that can be partially restored through land management practices, particularly by introducing trees and incorporating exogenous carbon in the form of biochar or organic amendments, (ii) land management practices that are implemented in forests generally result in depletion of SOC, and (iii) indirect effects of climate change, such as through wildfires, have a greater impact on SOC than direct climate change effects (e.g., from rising temperatures). The findings of our study provide strong evidence to assist decision-makers in safeguarding SOC stocks and promoting land management practices for SOC restoration. Furthermore, they serve as a crucial research roadmap, identifying areas that require attention to fill the knowledge gaps concerning the factors driving changes in SOC.
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