On the basis of raster DEM data in the Baohe River basin, this paper presents an application of DEDNM to generate drainage network automatically, build digital basin, and extract drainage network to establish the topological river network structure.
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- 本文基于褒河流域柵格數字高程模型DEM(Digital Elevation Model)數據，采用數字高程水系模型DEDNM(Digital Elevation Drainage Network Model)，自動(dòng)生成河網(wǎng)，構建數字流域，提取流域水系信息，建立流域水系空間拓撲關(guān)系。
