The susceptibility of Microtus fortis to diphacinone sodium salt in Dongting Lake region Response of Environment to Forest Landscape Pattern in West Dongting Lake Region GIS-based Suitability Evaluation of Agricultural Land inDongting Lake Reg ion Effect of reducing fertilizer application on crop yield and nitrogen and phosphorus loss in runoff from embankment upland in Dongting Lake Region Microbial biomass C,N,P of farmland soils in different land uses and croppingsystems in Dongting Lake region Ecological compensation standard in Dongting Lake region of returning cropland to lake based on emergy analysis.