Study on runoff process of the glacier and permafrost in the headwaters of Urumqi River

Based on the fact that the climatic change impacts on the hydrological process in the alpine region in the headwaters of Urumqi River, the analysis that the runoff change of glaciers, snow and permafrost in the headwaters make a response to the change of temperature and precipitation is significant to understand the impact of the climatic change on the runoff change in cold and arid regions and the rational use of water resource. The date of spring runoff occurrence on May all postponed in both Glacier No.1 and dry cirque hydrological section, and runoff halt time is also a not significant on September, which indirectly present a delayed ablation season; on the other hand, the spring runoff since 2000 is more than that in 1980s, and the variation amplitude of runoff since 2000 is less than that in 1980s during the high ablation season, both summer runoff and runoff variation amplitude in dry cirque hydrological section all increase clearly, which mainly implied that precipitation high increase resulted in hillside runoff increase in alp permafrost.