Pre-warning Study Of Ecological Security Of ChaoHu Basin

ChaoHu Basin is one of five fresh water lakes of China. It brings about huge benefit to people of ChaoHu Basin, but it is serious for its ecological security problem because of effects of human activities. For example depravation of water quality, picking up soil erosion, serious pollution, etc. Many studies have been with an eye to water pollution of the basin. Many scholars have studied in quality of water, ecosystem and ecological economy etc, but they have not been studied in evaluation and pre-warning of ecological security. So this paper has been developing pre-warning study on basis of the natural science fund of AnHui province education office.In this paper, the following questions are discussed:First, According to PSR (Pressure State Response) and AHP (Anaylytic Hierarchy Process), and index system of ecologic environment and sustainable development and ecological province, city and town, we constitute pre-warning index system of ecological security.Second, we constitute the pre-warning model of ecological security and pre-warn with the use of datum of ChaoHu Basin.Third, according to pre-warning result, we put forward the measure of ecological security. All conclusions we sum up in the paper are important to mange ChaoHu Basin.