基于DEM的流域地形地貌信息提取  

Study on Extraction of Catchment Topograph and Landform Information Based on DEM

作　　者：解河海[1] 郝振纯[1] 冯杰[1] 黄夏坤[1] 

机构地区：[1]河海大学水文水资源学院

出　　处：《水电能源科学》2008年第3期63-65,76,共4页Water Resources and Power

基　　金：国家自然科学基金资助项目(50609005);水利部黄河泥沙重点实验室开放课题基金资助项目(2007010)

摘　　要：为得到分布式水文模型所需要的参数,开发了程序进行流域信息提取,对得到的水系按水链进行编号,进而得到以水链为基础的子流域坡面。对水链坡降和长度、栅格坡度、子流域坡面坡度、流域地形指数等信息进行提取分析,为基于坡面的分布式水文模型的构建奠定了基础,具有理论意义及实用价值。Studying the needed catchment information of model based on study of distributed hydrologic model, in order to obtain the needed parameter information for designing the procedure to extract the catchment information, giving a serial number for each drainage system according to the water chain and obtaining the subcatchement based on water chain, some programms were developed. Extraction and analysis on the gradient and the length of water chain,hillslope degree, the drainage density and the topographic index of catchment and the base for the construction of distributed hydrologic model based on hillslope.it can be not only significant in theory,but also important in application.

关 键 词：DEM 流域信息 分布式水文模型 水系 水链 

分 类 号：TV121.9[水利工程—水文学及水资源] TV333.9