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GIS环境下基于DEM的流域自动提取方法 被引量:7

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摘要 从数字高程模型DEM(Digital Elevation Models)直接提取河网及相关流域信息,是分布式水文模型开发与应用的基础。探讨了从数字高程模型(DEM)中提取流域水文特征的详细过程,包括: DEM的生成和预处理、水流方向的确定、河网的提取、流域边界的确定和子流域的划分。旨在为ArcGIS在流域水文分析中的应用提供参考。
作者 高鑫磊
出处 《北京水务》 2009年第2期46-48,共3页 Beijing Water
关键词 DEM 栅格 GIS 河网
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