Hydro-network is the standardized representation of the watersheds river network by the Geographical Information System,and it is able to completely describe the topological relationship of the components of hydro-network. The key to build a hydro-network model lies in defining the components of hydro-network and establishing the association among these components. In this paper,using DEM to extract the components of landform,and then to build a vector data hydro-network model,much attention was paid to th...
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