Effects of different organic manure on biologically active organic fractions of soil The size and characterization of biologically active organic carbon pool in soils Active soil organic matter and its relationship with soil quality The changes of soil organic carbon and carbon management index in alpine steppe Impacts of snow cover change on soil water-heat processes of swamp and meadow in Permafrost Region, Qinghai-Tibetan Plateau Carbon dynamics of fine root (grass root) decomposition and active soil organic carbon in various models of land use conversion from agricultural lands into forest lands