Characteristics of soil organic carbon at 38°N ecological transect of Hebei Province Using DNDC model to simulate and predict changes in black soil organic carbon Review of researches on soil aggregate and soil organic carbon A review of researches on evolution of soil organic carbon in mollisols farm-land Evolution of soil organic carbon and crop yield under long-term fertilization in grey desert soils Spatial variability of soil organic carbon and related controlling factorsin Renshou County, Sichuan Province Distribution characteristics of organic carbon and total nitrogen in dry farmland soil aggregates under different tillage methods in the Loess Plateau of central Gansu Province Spatial heterogeneity and storage assessment method of surface soil organic carbon in high bulk-rock ratio slopes of Karst Regions