基于DEM的分布式水文模型构建方法
Methods of Constructing Distributed Hydrological Model Based on DEM
查看参考文献18篇
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文摘
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基于DEM的分布式水文模型是现代水文学同高科技（如计算机技术、3S技术等）相结合的产物，是研究变化环境下水文循环与水资源演化规律的理想工具，代表了水文模型的最新发展方向。从DEM的特性出发，本文探讨并总结了分布式水文模型的特点、建模思路和模型基本结构框图。在流域离散化方面，重点介绍了分布式水文模型常用的三种单元划分方法；最后，针对分布式水文模型构建问题，从“输入模块”、“单元水文模型”、“河网汇流模型”三方面，阐述了分布式水文模型微结构构建方法。 |
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其他语种文摘
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Resent advances in remote sensing, geographic information systems, and computer technology make the use of distributed hydrological model, based on digital elevation model (DEM), an attractive approach or tool to studying hydrological processes and evolution laws of water resources under changing environment. But distributed hydrological model is not perfect compared with lumped hydrological model. In order to promote its development, based on DEM, this paper discusses and sums up the characteristics of distributed hydrological model, then probes into two main ways and means of constructing distributed hydrological model. One way is like SHE model, another is like SWAT model. Although distributed hydrological models can be made in different ways, the primary structure of the model is quite similar. A typical structure of DEM based distributed hydrological model is provided in this paper. To better study the impact of the changing environment on hydrological processes, a watershed must be divided into subunits. This paper expressly discusses the three most common techniques used to discretize a watershed, which are respectively grid cell discretization, representative hillslope discretization and subwatershed discretization. In the final, as to the problem of constructing model, the methods of building the components of the distributed hydrological model is set forth from three aspects: input module, unit hydrology model and river routing model. A brief comment on the current distributed hydrological model research and some advice are given in the conclusion. All these will provide a guidance for making distributed hydrological model based on DEM. |
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来源
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地理科学进展
,2002,21(5):430-439 【核心库】
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关键词
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分布式水文模型
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DEM
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流域划分
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单元水文模型
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河网汇流模型
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地址
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1.
中国科学院地理科学与资源研究所, 北京, 100101
2.
郑州大学环境与水利学院, 郑州, 450002
3.
武汉大学水利水电学院, 武汉, 430072
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1007-6301 |
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学科
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地球物理学 |
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基金
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国家973计划
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文献收藏号
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CSCD:988183
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