基于RS和GIS的森林资源类型三维地形显示与分析

3-D Topographic Display and Analysis of Forest Resource Types Based on RS and GIS

本文以安徽省东至县梅城林场为研究对象,在遥感(RS)与地理信息系统(GIS)的支持下,运用遥感软件Erdas9.0对2011年同期的LandsatETM+遥感影像进行分类,形成森林资源类型影像分类图;以ArcGIS9.3为数据加工平台,对林场1∶10000地形图等高线进行矢量化,生成数字高程模型(DEM)。在ArcGIS软件环境下,将森林资源类型影像分类图和DEM融合,实现森林资源类型三维地形显示,在此基础上,进一步对森林资源的分布和海拔因子关联性进行了分析。

In this paper,Meicheng Forest Farm in Dongzhi County,Anhui Province was the study object. Supported by the remote sensing （RS） and geographic information system （GIS）,its synchronous LandsatETM＋ RS images taken in zoil were classified to form the forest-resource-type image classification map with the RS software Erdas9.0：The contour lines of the farm 1/10000 topographic map were vectorized to generate the digital elevation model （DEM） with ArcGIS9.3 as the data processing platform. In ArcGIS software context,the forest-resource-type image classification map and DEM were integrated to realize 3-D topographic display of forest resource types. Based on this,correlation between the forest resource distribution and altitude factors was further analyzed.