基于GIS的数字地形分析及其应用——以四川威远县越溪镇为例  

Digital Terrain Analysis Based on GIS and Its Application——Take the Yuexi Town of Weiyuan County in Sichuan as an Example

作　　者：陈敏[1] 唐斌[1] 舒珺[1] 肖海[1] 

机构地区：[1]成都理工大学地球科学学院,成都610059

出　　处：《四川环境》2010年第5期119-121,126,共4页Sichuan Environment

摘　　要：本文以四川省威远县越溪镇为例,利用地理信息系统软件(ArcGIS9.2)为工具,以地形图为基础数据来构建不规则三角网TIN,并对该地区的TIN进行坡度坡向的提取与分析,最后提出了数字地形分析的结果可应用到退耕还林的科学决策工作上。In this paper,the Yuexi town of Weiyuan County in Sichuan province was taken as an example to construct Triangulated Irregular Network（TIN） using terrain images as the basic data by means of software of geographic information system（ArcGIS 9.2）.The slopes and aspects of TINs in this area were extracted and analyzed.It was proposed that the digital terrain analysis should be applied for scientific decision-making on conceding the land to forestry.

关 键 词：地理信息系统 不规则三角网 坡度 坡向 数字地形分析 

分 类 号：X87[环境科学与工程—环境工程]