文章基本信息

标题：DEM-based Investigation on Stream Network Nodes and Their Features
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作者：Shanshan GE ; Guoan TANG
期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2008
卷号：XXXVII Part B2
页码：293-298
出版社：Copernicus Publications
摘要：Surface runoff is one of dominant factors in hydrological environment, whose spatial pattern and hydrological feature represent the composite factors of its corresponding drainage. And the stream network nodes present spatial structure and attributes of geography and hydrology in a watershed. A quantified method to analyze stream network nodes is proposed in this paper. The typical area of the Loess plateau is taken as study site and Digital Elevation Model（DEM）is chosen as basic dataset. The stream network nodes are extracted based on DEM and the classification of stream network is put out by different rules. Additionally, the basic features are analyzed from the angles of hydrology and GIS, including attribution, spatial-temporal distribution. This attempt reveals relationship between law of stream runoff and other spatial features, which has potentials to enable quantitative comparisons of different landform domestically
关键词：DEM; Feature; Distributed; Hydrology; Geomorphology