Effects of land clearing for agriculture on soil organic carbon stocks in drylands: A meta‐analysis

Agricultural activities have been expanding globally with the pressure to provide food security to the earth's growing population. These agricultural activities have profoundly impacted soil organic carbon (SOC) stocks in global drylands. However, the effects of clearing natural ecosystems for...

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Published in:Global change biology 2023-01, Vol.29 (2), p.547-562
Main Authors: Wang, Yuangang, Luo, Geping, Li, Chaofan, Ye, Hui, Shi, Haiyang, Fan, Binbin, Zhang, Wenqiang, Zhang, Chen, Xie, Mingjuan, Zhang, Yu
Format: Article
Language:English
Subjects:
Agricultural land
Agriculture - methods
Analysis
Arid zones
Carbon
Carbon dioxide
Carbon Sequestration
clearing natural ecosystems
Confidence intervals
cropland
Crops, Agricultural
Cultivation
drylands
Dynamics
Ecosystem
Ecosystems
Emissions
Estimation
Fertilizer application
Fertilizers
Food security
Grasslands
Land clearance
Land clearing
Meta-analysis
Organic carbon
Organic soils
Soil
soil organic carbon
Soils
Stocks
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Summary:Agricultural activities have been expanding globally with the pressure to provide food security to the earth's growing population. These agricultural activities have profoundly impacted soil organic carbon (SOC) stocks in global drylands. However, the effects of clearing natural ecosystems for cropland (CNEC) on SOC are uncertain. To improve our understanding of carbon emissions and sequestration under different land uses, it is necessary to characterize the response patterns of SOC stocks to different types of CNEC. We conducted a meta‐analysis with mixed‐effect model based on 873 paired observations of SOC in croplands and adjacent natural ecosystems from 159 individual studies in global drylands. Our results indicate that CNEC significantly (p 
ISSN:1354-1013
1365-2486
DOI:10.1111/gcb.16481