Spatial distribution of soil organic carbon in apple orchards on Loess Tableland
黄土塬区苹果园土壤有机碳分布特征

Soil organic carbon(SOC) is a large component of the global carbon cycle,and related to atmospheric CO2 levels because soils have the potential for C release or sequestration,depending on land use,land management and climate.In addition,SOC is vital for ecosystem function,having the greater influences on soil structure,soil fertility,water holding capacity,cation exchange capacity and the soil' s ability to form complexes with metal ions and store nutrients.The influence of landuse changes on SOC is not onl...