青藏高原东缘三江流域生态功能区建设的措施与影响

三江流域生态环境极度脆弱，严重威胁着中下游地区的社会安全和经济发展。随着西部开发和生态建设的推进，尤其是本地区“香格里拉”旅游热潮的兴起，三江流域已经成为西部开发的重要地区。通过三江流域的生态环境功能区的界定和划分，科学制定研究区的生态环境建设目标，并进行生态环境质量的动态监测和退化过程的预警报，从而在宏观上实现生态环境质量动态管理；通过退化生态系统的恢复重建模式的研究，特别是功能区的建设示范，把目前的生态恢复工程提高到一个新的水平；为保护生物多样性资源，实现区域生态、经济、社会可持续发展提供理论支撑。

MEASURES AND THEIR IMPACTS IN THE CONSTRUCTION OF COLOGICALLY FUNCTIONAL REGIONS IN THE THREE-PARALLEL-RIVERS IN THE EASTERN EDGE OF TIBET PLATEAU

The Sanjiang (Three-parallel-Rivers) Watersheds are the areas of Jinsha, Lancang and Nujiang Rivers of western Sichuan Province, northern Yunnan province and eastern Xizang Autonomous Region, China. The total area is 380,000 km2 with a population of 2 millions. This area is the source origin and ecological shield of several great rivers in Asia. The environment in this area is fragile because of the high-precipitous topography and strong geological activity that threats the social safity and agricultural development in downstream areas. The ecologically functional regionalization and construction, developing the marking indexes of environment quality will be the key step to fulfil the eco-environment engineering in this region. This will benefit the management and control the environment quality, forecasting the degeneration process and change tendence of ecological environment.