基于分布式水文模型的雅鲁藏布江径流水源组成解析

被引:18
作者
田富强 [1 ]
徐冉 [1 ]
南熠 [1 ]
李琨彪 [1 ]
贺志华 [2 ]
机构
[1] 清华大学水沙科学与水利水电工程国家重点实验室
[2] Centre for Hydrology,University of
关键词
分布式水文模型; 水源组成解析; 水文分区曲线; 雅鲁藏布江;
D O I
10.14042/j.cnki.32.1309.2020.03.002
中图分类号
P334.92 [];
学科分类号
摘要
为开展河川径流的水源解析,构建过程描述和本构参数两方面均有较强物理性的分布式水文模型。以雅鲁藏布江为对象,利用水文分区曲线对降雨、融雪和融冰等不同水源主导的流量过程进行划分,以划分的流量过程线子集对相应水文过程参数进行分步率定,提高了水文模型参数的物理性,以此构建了雅鲁藏布江流域分布式水文模型及参数集,内部多个水文站点和流域雪水当量的验证表明模型具有良好的性能。基于模型解析了2001—2015年间雅鲁藏布江的径流水源组成,降雨、融雪、融冰水源对总径流量贡献的比例分别为66%、20%和14%。本文方法对高山寒区径流的水源解析有普遍意义,结果对理解气候变化下雅鲁藏布江径流变化趋势有参考价值。
引用
收藏
页码:324 / 336
页数:13
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