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地球科学进展  2003, Vol. 18 Issue (2): 251-256    DOI: 10.11867/j.issn.1001-8166.2003.02.0251
研究论文     
基于DEM的流域特征提取综述
李丽,郝振纯
河海大学水资源开发利用国家专业实验室,江苏 南京 210098
THE AUTOMATED EXTRACTION OF CATCHMENT PROPERTIES FROM DIGITAL ELEVATION MODELS
Li Li, Hao Zhenchun
Water Resources Development & Utilization Laboratory,Hehai University,Nanjing 210098,China
 全文: PDF 
摘要:

回顾了自DEM出现以来它在流域特征提取方面的应用和发展,论述和比较了提取流域特征的各种方法。包括确定流向的单流向法(D8法、Rho8法、Lea方法、DEMON法以及 D∞法)和多流向法;提取河网的识别谷点法和基于流向提取河网的方法;提取河网过程中洼地和平原区的流向确定、河网提取的方法;划分子流域和提取流域边界线的方法;计算分布式子流域特征的方法,其中重点论述了子流域长度和坡度的计算方法,以及提取控制点所控制的排水区的方法。

关键词: DEM流域特征河网    
Abstract:

The automated methods to extract catchment properties from digital elevation data were described in this paper. They are related to the determination of flow direction in unit grid, the extraction of drainage networks, the extraction of catchment boundary, the treatment of flow directions and theextraction of drainage networks in pits and plat areas, the partition of subcatchment and the calculation of distributed catchment properties. The methods of determining flow direction in unit grid include single direction methods ,such as D8 method, Rho8 method, Lea method, DEMON method and D∞ method, and multitude directions methods. The algorithms of subcatchment properties including subcatchment length and subcatchment slope are different because of the different application. Several algorithms were mentioned in the paper. Also, an example was given about the extraction of catchment controlled by hydrology station. In which the D8 method was used to determine the flow direction of unit grid. And the result was satisfying basically.

Key words: DEM    Digital elevation models    Automated extraction    Drainage networks.
收稿日期: 2002-05-13 出版日期: 2003-04-01
:  P333  
基金资助:

国家重点基础研究发展规划项目“我国生存环境演变和北方干旱化趋势研究”(编号:G199043400)资助.

通讯作者: 李丽     E-mail: llwjh@163.com
作者简介: 李丽(1978-),女,河南济源人,硕士研究生,主要从事水文水资源研究.E-mail:llwjh@163.com
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引用本文:

李丽,郝振纯. 基于DEM的流域特征提取综述[J]. 地球科学进展, 2003, 18(2): 251-256.

Li Li, Hao Zhenchun. THE AUTOMATED EXTRACTION OF CATCHMENT PROPERTIES FROM DIGITAL ELEVATION MODELS. Advances in Earth Science, 2003, 18(2): 251-256.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2003.02.0251        http://www.adearth.ac.cn/CN/Y2003/V18/I2/251

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