Perspective Of Sustainable Development Of The Dianchi Basin Agricultural Nonpoint Source Pollution Prevention And Control Research

The reform and opening up lasts more than 30 years, as the rapid economic growth of China, the energy and environment deterioration is becoming the worst contradictions. China has been price paid dearly for the development by damaging the environmental, many natural disasters such as 98's catastrophic flood, south snow disasters in 2008 and the continuous drought from the end of last year, the disasters bring huge life and economic losses to the country and the people, therefore, we must get rid of the development mode past, consider the overall ecological system, establish long-term policy for coordination of economic development and environmental protection, improve environmental problems and the sustainable utilization, and use natural resources rationally to guarantee the accomplishment of sustainable development.The first national census results show that the pollution of agricultural non-point source pollution is 42% of water pollution. From national level, agricultural non-point source pollution is mainly caused by the excessive use of pesticides and chemical fertilizers and animal feces, straw burning, plastic film use and soil and water loss, etc, and different regions in agricultural non-point source pollution levels and types of pollution existent differences. The countries all over the world including China have made many beneficial attempts in the governance of agricultural non-point source pollution, also have a lot of valuable experience and lessons, these experiences is effective reference actively for our prevention and control of agricultural non-point source pollution in the future. As China's first six inland lake, the Dian Lake is known as"Pearl of the plateau". in recent years, the pollution of the Dian Lake is very serious, it were listed in the plan by the state council as key management lake. In the Dian lake watershed, the causes of water pollution are more complex than Tai Lake and Chao lake, for both with same reasons and also has its own characteristics. Among them, agricultural non-point source pollution is a important factor of the Dian lake water environment pollution.This thesis focuses on the problems of agricultural non-point source pollution in the Dian lake watershed according to the results of first national census sources. From the natural and the social environment of Dian lake watershed, the thesis analyzes the concrete problems, descript comprehensively the pollution situation of Dian lake watershed through a large number of data, especially the agricultural non-point source pollution situation, and gives depth analysis of the influence that all aspects of agricultural non-point source pollution in the Dian Lake water pollution form. At the same time, the thesis reviews the management of Dian Lake in the past ten years. Finally, the thesis combines with the specific situation in the Dian Lake watershed, aims at the causes of agricultural non-point source pollution, summarizes the achievements and experience of management, and puts forward the practical policy recommendations of prevention and control agricultural non-point pollution in the Dian Lake watershed.