Spatial variation in organic carbon,nutrients and microbial biomass contents of paddy soils in hilly red soil region CAUSE OF SEASONAL DRAUGHT FORMATION AND STRATEGY OF THE EASTERN HILLS IN SOUTHERN CHINA Dynamic Change of Groundwater Level in Waterlogged Gleyed Paddy Soils in Hilly Red Soil Region and Its Effects on Availability of Soil Nitrogen and Phosphorus Characteristics of soil phosphorous loss under different ecological planting patterns in hilly red soil regions of southern Hunan Province, China. Effects of reforestation on soil chemical properties and microbial communities in a severely degraded sub-tropical red soil region. Evolution pattern of soil total N content and its distribution in typical hilly red soil regions Responses of rhizosphere nitrogen and phosphorus transformations to different acid rain intensities in a hilly red soil tea plantation. Simulation of soil organic carbon dynamic after changing landuse pattern in hilly red soil region The Effects of Litterfall on Soil Organic Carbon and Nutrient in Artificial Forests of Hilly Red Soil Region of Southern China