渭干河流域水文特性分析

Analysis of Hydrological Characteristics of the Weiganhe River Basin in Aksu City

以渭干河流域的4个气象站和8个水文站1961年2010年观测资料为基础，对渭干河流域的温度、降水、径流及泥沙变化进行了分析。结果得出：①20世纪60年代以来渭干河流域的年平均气温呈逐年代递增趋势；②年代降水量也呈逐年代递增趋势；③年代年径量也呈逐年代递增趋势，冰川融水量变化和降水量的波动，控制着河流径流量的大小变化；④年代输沙量也呈逐年代递增趋势，随着社会经济的飞速发展，出现了不考虑自然环境承载能力的过度开发现象，使生态环境出现恶化的趋势。

Based on the observation data from 1961-2010 at the four meteorological stations and the eight hydrological stations, the temperature, precipitation, runoff and sediment variations of the Weiganhe River Basin were analyzed. The conclusions were that： 1. the annual average temperature showed the increasing tendency from 1960 to now in the hasin;2, the precipitation was increasing; 3. the annual runoff volume was increasing too by time, the river runoff change depended on the gla- cial melt water change and the precipitation fluctuation; 4. the annual sediment runoff was also increasing. With the rapid development of social economy, the excessive development was occurred without considering the natural environment carrying capacity, which made the ecological environment be deteriorated, vegetation be de- stroyed, and temperature be risen.