关键词: 三江流域, 生态区划, 功能建设

Abstract: 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 fragile because of the high precipitous topography and strong geological activity that threats the social safety and agriculture 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 tendency of ecological environment.

Key words: the Three-parallel-Rivers watershed, ecology zones