南水北调中线工程陕南水源区水环境研究

南水北调中线工程是我国超大规模跨流域调水的重大工程。水源区的水环境状况直接影响到调水安全和工程的成败。陕南的汉江、丹江流域是水源区的腹地。本文以定性与定量相结合的方式，从自然环境、自然灾害、水土流失、植被覆盖、水质水量和经济发展等方面分析了陕南水源区的水环境现状。水源区水资源丰富，社会经济发展水平低，调水环境面临巨大压力。只有处理好水源区社会经济发展和水环境保护的关系，才能有安全可靠、持续发展的输水环境。

Study on the water environment in source areas of Southern Shaanxi for the Medium Route Project of the South-to-North Water Diversion

The Medium Route Project of the South-to-North Water Diversion is one major water diversion project which crossed different river basins. And the water environment is one of the vital points that directly determine the security and success of the project. The Han River and Dan River＇s areas are the hinterland of the source area in southern Shaanxi. This paper analyzed the present local water environment from physical environment, natural disaster, water erosion, vegetation cover, water quality and quantity, and even economic development, with integrated method of both quantify and determining. In water source areas the water resources are adequate, the social economic development level is lower. So only deal with the relationship between social economic development and water environment conservation in source area, the reliability, security and sustainable development for the water diversion environment can be contained.