OALib Journal期刊
ISSN: 2333-9721
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小兴安岭典型集水区水文过程模拟研究
DOI: 10.3969/j.issn.1000-2006.2013.04.013, PP. 69-74
Keywords: 分布式水文模型,典型集水区模拟,水文过程,小兴安岭
Abstract:
以gis技术及数据库、计算机编程语言为基础,根据东北森林动态规律、年内积雪及冻土冻融特性规律,构建了分布式水文模型――nehm,并采用nehm模拟小兴安岭汤旺河流域典型集水区逐日径流过程,基于育林沟水文观测站2004年实测资料分别对比了生长季径流总量和日径流模拟结果。结果显示,生长季径流总量模拟值和真实值比较接近,日径流量模拟的效率系数(ens)和相关系数(r2)均高于0.75。在此基础上,设置不同降水量情景,同时采用nehm模拟了观测点所在栅格地表径流水量的变化。结果表明,通过nehm模拟,能够体现出降雨变化对水文过程的影响。
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