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冰川冻土  2014 

新疆吐鲁番盆地地表径流特征

DOI: 10.7522/j.issn.1000-0240.2014.0086, PP. 717-723

Keywords: 径流特征,水资源量,冰雪补给,吐鲁番盆地

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Abstract:

吐鲁番盆地是新疆水资源严重匮乏的地区之一,水资源“先天不足”,水资源紧缺已成为经济发展的瓶颈.吐鲁番盆地地表径流主要形成在盆地北部、西部中高山区,最终流入到吐鲁番盆地西南部的艾丁湖.吐鲁番盆地中、高山区是径流的主要形成区,山前倾斜平原区为径流的转换区,下游绿洲为径流的主要散失区.地表径流的具有垂直地带性分布规律,表现在径流深随着高程的增加而增加,径流系数随流域高程的增加而递增.吐鲁番地区的河流径流量年内分配变化较大、极不均匀,主要河流补给源是降雨、冰川融水、融雪水及地下水,降雨和融雪水所占比例大,导致夏季河流径流量集中.吐鲁番盆地天然地表总径流量为10.619×108m3,其中,不可能被利用水资源量为0.8984×108m3,不可以被利用地表水资源量为1.392×108m3,可利用量为8.328×108m3.

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