Abstract:

Understanding the potential of cropland soils to restore soil organic carbon (SOC) would help to evaluate the contributions of cropland soils as a C source or C sink and assess the influence of cropland soils to global warming correctly. Investigation of SOC storage and loss is one of the global front-ledge research areas. However, there were many uncertainties about SOC dynamics in soil system, which brought difficulties to determine the potential of cropland soils to restore C. Based on discussing the basic theory of SOC sequestration, this paper summarized the research of SOC sequestration and it’s affecting factors.