摘要
该文详细介绍了ArcGIS9.2中的水文分析工具箱的使用方法,包括从原始DEM数据提取河网的步骤、应注意的问题等。研究区域选取位于北京山区的红门川小流域,采用1∶10000的比例尺、10m分辨率的DEM作为基本的地形数据,应用ESRI公司开发的ArcGIS9.2地理信息系统软件进行流域水文信息特征的提取;并利用SWAT模型运行水文响应单元(HRUs)的生成,共生成了25个子流域和92个HRUs。经分析,得到的研究区域河网特征以及研究区其他常用的流域特征信息,与实际河流水系特征基本吻合,因此应用DEM划分的流域结果是合理的。
This paper introduces the using method of the toolbox in ArcGIS 9.2 environment in analysing hydrological information,including procedures of extracting river network from raw digital elevation model(DEM)data and problems to be considered.Hongmenchuan watershed located in Beijing mountain areas was chosen to learn watershed characteristics from DEM with 1∶10 000 scale and 10 m resolution.With the analysis of ArcGIS 9.2,watershed data such as flow direction,stream networks and other catchment properties were collected.Using SWAT model to generate hydrologic response units,25 sub-watersheds and 92 HRUs were obtained.Compared with actual hydrological characteristics,the results are rational.
出处
《北京林业大学学报》
CAS
CSCD
北大核心
2008年第S2期144-147,共4页
Journal of Beijing Forestry University
基金
“十一五”国家科技支撑计划项目(2006BAD03A02)
北京市科委科技计划重大项目(D0706001000091)
关键词
ARCGIS
数字高程模型
流域特征
水文信息
提取
ArcGIS
digital elevation model(DEM)
watershed characteristics
hydrological information
extraction
