Assessment Of Ecological Health Of Wuliangsuhai Lake

Industrialization and urbanization of the region brought about the acceleration of industrial wastewater and urban sewage and agricultural withdrawal water discharge,and a large number of factors of the lake itself, which led to eutrophication of Lake and serious deterioration of water environment. So Based on the basis data of the wetland ecological functions indicators and status,use the comprehensive index evaluation model to calculate the ecological health level of the lake water, and determine the main factors which affect the ecological health,last, make appropriate recovery measures and programs.Take full account of the actual situation of Lake, from the ecological character of wetlands, functions and social integration of environmental filterring 22 indicators which were selected to construct the wetland ecosystem health assessment system, and the index is divided into five categories:very healthy, health, general, general morbidity and disease. Entropy is calculated by the weight of each index, then evaluation method is used to calculate the ecological health level of the Wuliangsuhai from 2000 to 2009 year, were 58.06,68.20,87.72,70.55,65.83,48.32,35.13,29.66, 57.01,52.49. The main health effects of wetland is water quality factors,Fertilizer use, environmental protection and investment index, water impact index, urbanization, water storage lakes, etc。...