Soil Organic Carbon Stocks, Changes and CO2 Mitigation Potential by Alteration of Residue Amendment Pattern in China

Proper estimation of China’s national soil organic carbon (SOC) stocks, changes and mitigation potential are critical to adopt proper measures to protect SOC pools and to make strategies for the greenhouse gases (GHGs) mitigation. The data of SOC, bulk density from the Second State Soil Survey of China conducted in the early 1980s, and farmland CH4 and N2O emission induced by residue amendment were used to estimate the SOC pools, their changes during 1980s–2000s and farmland GHGs mitigation potential in China.