摘要
以岷江流域都江堰区域为试验研究对象,论述常用的基于数字高程模型(DEM)提取流域河网水系的方法和原理。采用1∶25万DEM作为基本的地形数据,应用ESR I公司开发的ArcGIS地理信息系统软件进行河网水系提取。并对研究区域提取结果进行了详细的分析,得出了河网提取时应注意的问题,为GIS在河网提取方法研究方面提供了更加成熟的理论与实践基础。
Taking Dujiangyan area within Minjiang River Basin as the experimental study object,the method and principle for extraction of river network based on the normal digital elevation model(DEM) are discussed herein.The software of ArcGIS developed by Environmental Systems Research Institute,Inc.(ESRI) is applied to extract the relevant river network by taken DEM with the scale of 1 ∶250 000 as the basic topographic data,and then the result extracted from the studying area is analyzed in detail;from which the pr...
出处
《水利水电技术》
CSCD
北大核心
2009年第3期74-77,共4页
Water Resources and Hydropower Engineering
基金
四川农业大学都江堰分校科技基金课题(N-200605)
关键词
GIS
DEM
水系
河网提取
岷江流域
GIS
DEM
water system
extraction of river network
Minjiang River Basin
