The proportion of glacial meltwater runoff in the four typical river basins of the Heihe River water system to the mountainous runoff in 2006 was estimated to 9.

We discussed the characteristics of climate change、the relation between climatic elements and annual mountainous runoff which is necessary for ecological restoration and economic construction.

Based on the runoff data at Yingluoxia Stationin Heihe River from 1944 to 2004,the inter-annual change,intra-annual distribution characteristic,and stability characteristic of mountainous runoff at the station,as well as the impacts of runoff change on regional water resource security,were analyzed.