Analysis of eutrophication state and trend for lakes in China

The article analyzes the present state and trend of eutrophication of lakes in China and concludes that lakes throughout the country are commonly undergoing the process of eutrophication: most of urban lakes are facing hypertrophication, many mediumsized lakes are of eutrophic state, some lakes even approaching to hypertrophic level. The five large freshwater lakes are in the condition of eutrophication, especially Lake Caohu and Lake Taihu are already in the state of eutrophication, water quality is deteriorating and ecosystem is destroyed. According to domestic and foreign experiences of the successful demonstrations in eutrophication and pollution treatment, this article puts forward the theory of combining source control with ecological restoration, which as the guidance for eutrophication control of lakes in China.