| 许继军,杨大文,刘志雨,雷志栋.长江上游大尺度分布式水文模型的构建及应用[J].水利学报,2007,38(2):182-190 |
| 长江上游大尺度分布式水文模型的构建及应用 |
| Large scale distributed hydrological model and itsapplication to the upstream of Yangtze River |
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| DOI： |
| 中文关键词: 长江上游 径流模拟 分布式水文模型 GBHM模型 次网格参数化 |
| 英文关键词: upstream of Yangtze River runoff simulation distributed hydrological model geomorphology based hydrological model sub grid parameterization |
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| 中文摘要: |
| 针对面积达100万km2的长江上游流域，依据100m网格的数字高程模型DEM，基于流域的地貌特征原理，构建了10km网格的大尺度分布式水文模型。在建模过程中尽量利用相关的地理信息描述长江上游地区下垫面特点及其空间变化，并采用次网格参数化方法处理大网格内水文参数的非均一性。继而完整地模拟了1961～2000年的水文过程，结果表明，模型不仅较好地再现了河道的径流过程，而且能同时获得径流深、蒸散发和土壤含水率等水文要素在流域空间上的分布及其变化。 |
| 英文摘要: |
| A large scale distributed hydrological model established on the basis of DEM with 100m×100m grids and other geographical information is presented in accordance with the principle of watershed geomorphology. Considering the spatial heterogeneity of hydrological parameters inside a large grid, a sub grid parameterization scheme is adopted to divide the large grid into a couple of hillslope elements. This model is applied to simulate the hydrological processes occurred to the upstream of Yangtze River in the period from 1961 to 2000. The results show that by means of this model not only the variation process of runoff can be reproduced but also the spatial temporal distributions of runoff, actual evaportran spiration and soil moisture can be derived. |
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