Comprehensive Evaluation Of The Yulin City Water Environmental Carrying Capacity

The water environment carrying capacity is an important indicator of sustainable development, and reflects the support to city water systems of social and economic development. However, with the development of human society, the water environment problem has become serious as social and economic scale have been great, unreasonable industrial structure, inappropriate manufacturing layout and not good enough to environmental protection measures, which serious constraint to sustainable development. Therefore, research on city water environment carrying capacity, implementation of water resources optimization disposition and improve water quality, all those can have significant impact to maintain sustainable development. Behind the Yulin city's rapid increasingly economy development is the serious problems which are water shortages and the environment of serious pollution. So for serious pollution in the water environment carrying capacity of evaluation and forecast is imperative.Suifig. evaluating indicator system is established according to the present status of the water environment in Yulin area. The carrying degree of each evaluating indicator is obtained through the calculation of the established model. The water environment carrying capacity is obtained through the calculation of the water environment carrying capacity model. The main factors influencing the water environment carrying capacity are found through the analysis of the present status and dynamic changing tendency of the water environment carrying capacity in Yulin area. According to the characteristics of the water environment in Yulin area, Osculation method is applied to select the optimum strategy for the improvement of the water carrying capacity. Feasible methods for improving the water environment capacity in Yulin area are presented according to the selected optimum strategy.The results indicate that the water environment carrying capacity is relatively low and decreases with time in Yulin area, which is caused by the short water resources and high utilization ratio of water resources. According to Yulin region's the water environment and the actual utilization of water resources and to take increase its income, pollution control, make the industrial structure change and sewage back to Yulin in four areas to enhance programs. Use Close-value method to calculate the value of the program close. And choose optimal selection of programs. According to choose the best option and then put forward practical and effective in improving Yulin water environment carrying capacity specific measures.