Ecological Security Index System and its Comprehensive Assessment of WuYandong Reservoir in LuoTa,South of HuNan

By means of DSR model,the article builds up the ecological security index system of Wuyandong Reservior in Luota,south of Hunan and introduces some ecological indexes such as landscape indices(PRD,CONT) and Landscape evenness index,adopts comprehensive methods including Analytical Hierarchy Progress and Fuzzy Evaluation to analyze ecological security issue of nature,society and economy in the reservoir area from the point of state,pressure and influence indexes systems.The result showed the ecological security should be safe in the reservoir area of Wuyandon.According to the processing result,found out the ecological security response is a potential risk factor for Zhongzai water power-station in Luota and puts forward some countermeasures that there should establish the mechanism of ecological compensation and a system of ecological security prediction.