甘肃黄河流域与疏勒河流域降水径流变化特性对比分析

分析了甘肃黄河流域及内陆河疏勒河流域降水径流的年际变化特性。结果表明,黄河流域降水量与径流量变化一致,总体呈现减少的趋势;内陆河疏勒河流域降水量与径流量的变化趋势不一致,降水量呈总体减少趋势,径流量为总体增加趋势。两流域径流补给来源有差异,黄河流域径流补给来源为降水,疏勒河流域径流主要补给来源除降水外,与气温升高融雪水增大有关。

Comparative Analysis of Precipitation and Runoff Change Characteristics between Yellow River andShulehe River in Gansu Province

This paper analyzed the inter-annual change characteristics of the precipitation and runoff between the Yellow River and Shulehe River. The results show that the change of the precipitation and runoff in the Yellow River Basin is consistent, the precipitation is generally decreasing with the runoff reducing; the change tendency of the precipitation and runoff in the Shulehe River Basin is inconsistent, which means that the precipitation is decreasing with the runoff increasing. It is caused by the differences of change and geographical environment and the diversity of runoff supply sources. The runoff supply source of the Yellow River is from precipitation, while the major runoff supply source of the Shulehe River relates to snowmelt rising for higher temperature.