Organic Carbon Distribution and Enzyme Activities of Different Degraded Meadows Soil in Upstream of Heihe of Qilian Mountains The Impossible Relationships Between Plant Functional Groups and Organic Carbon Content under Different Land Utilization Types in Alpine Grassland Influence of Grassland Ecosystems Shift on Soil Organic Carbon in the Karst Mountain Area of Guizhou Province Soil Organic Carbon Profile Distribution of Rehabilitated Grasslands on the Opencast Coal Mine Dump of Loess Area Effect of long-term conservation tillage on total organic carbon and readily oxidizable organic carbon in loess soils Effects of sowing methods on the oxidation stability and the chemical bound forms of soil organic carbon in artificial grassland Characteristics of nitrogen contents under different land use conditions in Alpine grassland of Maqu Effects of conservation tillage on crop yield and carbon pool management index on top soil withina maize-wheat-soy rotation system in the Loess Plateau Effects of different land-use types on soil carbon and nitrogen contents in the northern region of Qinghai Lake Effects of Ecosystem Conversion on the Characteristics of Soil Organic Carbon in Ziwuling Forest Region Effects of plant process on soil organic carbon concentration Dynamics of organic C in black soil of Northeast China,simulated by CENTURY model I.Accumulation of soil organic carbon under natural conditions Impact of land-use change on soil carbon storage Influence of cultivation on organic carbon in three typical soils of China Loess Plateau and Canada Prairies Vegetation recovery in degraded red earth:effect on organic carbon and Pb and Cd partitioning in soil particle size fractions Storage of the organic carbon pools in the shrimp ponds Effects of CO2 elevation on root exudates in rice Root System and Organic Carbon Distributions in Soil Profiles of Several Plantations of Northern Slope of Qinling Mountains