| 数字高程模型在流域水系拓扑结构计算中的应用 |
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| 引用本文： | 任立良,刘新仁.数字高程模型在流域水系拓扑结构计算中的应用[J].水科学进展,1999,10(2):129-134. |
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| 作者姓名： | 任立良 刘新仁 |
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| 作者单位： | 河海大学 南京210098 |
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| 基金项目： | 国家自然科学基金资助项目(No.49794030);霍英东教育基金;高等学校博士点专项科研基金 |
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| 摘 要： | 简要回顾了利用数字高程模型自动提取流域水系的方法,着重介绍了Martz和Garbrecht开发的数字高程流域水系模型(DEDNM)的基本原理、模型结构、计算流程,包括数字高程模型中凹陷区域的识别和消除、平坦部位水流流向设定、流域分水线勾划、河网生成、河网与子流域编码及河网结构拓扑关系的建立,并将其应用于淮河史灌河流域--全球能量与水分循环亚洲季风试验强化观测区。结果表明该模型能够很好地自动生成流域水系,从而为分布式水文模型的开发研制提供了坚实的基础。
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| 关 键 词： | 数字高程模型 水系 河网编码 拓扑 |
| 收稿时间： | 1998-09-08 |
| 修稿时间： | :1998-09-0 |
Application of Digital
Elevation Model to Topological |
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| Ren Liliang and Liu Xinren.Application of Digital
Elevation Model to Topological[J].Advances in Water Science,1999,10(2):129-134. |
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| Authors: | Ren Liliang and Liu Xinren |
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| Institution: | Hohai University, Nanjing 210098 |
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| Abstract: | A brief review was made on automated extraction of drainage network from grid digital elevation model.The digital elevation drainage network model(DEDNM) was mainly introduced,including principal framework,model structure,and computing procedure. And the DEDNM was applied to the Shiguanhe catchment with the 5 930km2 of area, the intensified observation field for thd HUBEX/GAME.The result shown that the drainage system generated by the DEDNM is acceptable as compared with that on 1:100000 topography map, providing a solid foundation for further development of distributed hydrological model. |
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| Keywords: | digital elevation model drainage system network indexing topology |
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