Assessment Of Eco-Environmental Quality And Analysis Of Sustainable Development In The Rivers Sources Of Yellow River And Yangtse River And Lantsang River

As the"river sources"of Chinese main rivers and the"ecology sources"during the development of the eco-system, the river sources of the Yellow River, the Yangtse River and the Lantsang River have a very special ecological status and its ecological functions and effects have a holistic significance in Chinese survival and development. Water security is the chief purpose of the environment protection in this area while Stockbreeding is the main economy. The pasture is not only the physical basis of stockbreeding but also the principal part of the local eco-system and an important ecological barrier, so protecting the bio-diversity is the main purpose of establishing a nature reserve in this region. The ecological benefits from the protection of the eco-system in the River Sources can influence the sustainable development of midstream and downstream areas of the Yangtse River, even the Southeast Asia directly as well as the local economic and social development. So far, protecting the environment of the River Sources has already produced a realistic, historic and political significance by improving the sustainable development in the Yangtse River basin, the Yellow River basin and the Mekong River basin and the long-term stabilization in the minority areas.On the basis of a large number of field investigations and statistical analysis of data, by adopting the method of systematical analysis and combining the qualitative and quantitative analysis, the research described the natural resources, the social resources and the economic conditions systematically, summarized the basic principle, method and theory of the quality assessment of ecological environment, also classified and appraised the ecological environment in the River Sources. Meanwhile, by adopting the ecological footprint analytical method, which prevailed universally, the research calculated and analyzed the ability of sustainable development in the River Sources, combined the sustainable development with the evaluation of the main ecological factors which could influence environmental quality, evaluated the present conditions of environmental quality and summarized the main methods of restoring the eco-system in the River Sources. The main results and conclusions are as follows:1. The environmental quality assessment of the River Sources...