敦煌大泉河水环境特征分析

Analysis of water environment characteristics of the Daquan River in Dunhuang

以位于敦煌盆地南部莫高窟区的大泉河为例,分析了极干旱环境条件下小河流的基本特征,研究了该河流的径流量和水质成分的时空变化规律,其目的是合理有效地开发利用戈壁荒漠区极珍贵的水资源,兴利避害,为敦煌莫高窟的保护及旅游事业发展提供服务．

Taking the Daquan River, which is located in the Mogao Grottoes area to the south of Dunhuang basin, as an example, this paper analyses the basic characteristics of the small river in very arid environment and studies the space-time changing rules of discharge and water compositions of the river. Its purpose is to reasonably and effectively develop and make use of the extremely precious water resources in the Gobi desert region, promote the benefits thereof and abolish the harmful factors, so as to offer suggestions for the protection and tourism of the Dunhuang Mogao Grottoes.