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Organic C and N in Various Surface Mineral Soil Fractions in the Broadleaved Korean Pine Mixed Forests in Changbai Mt. Effects of simulated acid rain on soil organic carbon fractions in southern subtropical forests Organic carbon fractions and aggregate stability in an aquatic soil as influenced by agricultural land uses in the Northern China Plain Evolution characteristics of organic carbon fractions in gray desert soil under long-term fertilization The effects of Spartina alterniflora seaward invasion on soil organic carbon fractions,sources and distribution Effects of vegetation on soil aggregate stability and organic carbon sequestration in the Ningxia Loess Hilly Region of northwest China Variation Characteristics and Fractions of Oxidizable Organic Carbon in Different Sandy Vegetation Soil Carbon stock changes in bamboo stands in china over the last 50 years Effect of long-term fertilization on organic carbon fractions and contents of cinnamon soil Short-term influence of straw return on the contents of soil organic carbon fractions,enzyme activities and crop yieldsin rice-wheat rotation farmland Soil carbon fraction differences under different grass-crop rotations on the Loess Plateau, Central Gansu Soil carbon fractions under different land use types in the tablelands of the Loess Plateau Short-term effects of simulating nitrogen deposition on soil organic carbon in a Stipa krylovii steppe Effect of different irrigation and fertilization strategies on soil microbial biomass carbon and nitrogen and enzyme activity IMPACTS OF GRAZING ON SOIL CARBON FRACTIONS IN THE GRASSLANDS OF XILIN RIVER BASIN, INNER MONGOLIA