流域分水线
- 网络basin divide
流域分水线-
探讨了利用数学高程模型识别流域分水线、确定坡面水流方向以及计算流域参数的方法。
A method of distinguishing watershed borderline , of ascertaining water flow direction on a slope , and of calculating watershed parameters with digital elevation model is introduced and discussed .
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DEM不仅表达了地面高程的空间分布，而且据此可以自动生成流域的水系和分水线、自动提取地形坡度和其它地貌参数。
Not only because DEM express spatial distribution of ground elevation , but also because drainage networks and watershed boundary are generated and topographical gradient and other hypsographic parameters are extracted automatically from DEM .