摘要: Alpine glaciers are the natural solid reservoirs that releases amount of meltwater to supply streams every year. Glacier meltwater, adjuSting the yearly variation of stream runoff and making it trend to wards stableness, becomes the relible water resources to streams in mountain area. In accordance with the statistics,s there are glacier meltwater, obout 564 × 10⁸m³, to supply the streams in western mountain of China every year, which accounts for 2% of the total stream runoff all over the country and equals to the average annual runoff of the Huanghe (Yellow) River. It is also an important component of stream water resources in the north-west region.