摘要
从数字高程模型DEM(Digit Elevation Models)直接提取河网及流域信息,是分布式水文模型开发与应用的基础。本文利用ArcGIS中的水文分析工具从DEM中提取了流域水文特征。主要包括:DEM的预处理、水流方向的确定、水流累积量提取、河网的提取、集水区的提取和流域的划分。本文探讨了两种不同划分流域的方法,为流域划分及水文分析提供参考。
From digital Elevation model(DEM Elevation Digit) directly extract river network and Watershed information,is based on the development and application of hydrological model.Using the hydrologic analysis tool in ArcGIS extract hydrologic characteristics form DEM.Mainly including DEM pretreatment,the direction of flow determine,extraction of flow Accumulation,river network,watersheds and watershed division.The article discusses two different methods of watershed division,provide the reference for Watershed division and Hydrological analysis.
出处
《地下水》
2011年第6期128-130,共3页
Ground water
关键词
DEM
流域
河网
水文分析
DEM,watershed,river network and hydrologic analysis
