Based on the observations of rainfall events and recorded soil erosion data on the plots-which was established particularly for typical soils of southern China,in the Ecological Experiment Station of Red Soil(EESRS),Yingtan City,Jiangxi Province,the relationship between sediment yield and rainfall factors was explored for the time period from 1997 to 2003.The results show that under the relationship between sediment yield and surface runoff could be described by a power function,while the relationship between sediment yield and rainfall volume could be described by a polynomial function.Owing to the distinct soil and land use types applied among the plots,the equations describing sediment yield and rainfall factors varied significantly.