摘要
提取地形起伏度是获取地表信息,进行地形定量化分析的有效手段。本文以1:25万DEM数据为基础,并借鉴前人研究方法,在GIS支持下,借助0.25km2网格以乡镇为基本评价单元,提取营口市地形起伏度,完成地形起伏度分级专题图,通过分析营口地形局部起伏较大,总体较平缓,初步划定各乡镇适宜发展产业,对区域发展有一定的参考价值。
The extraction Relief Amplitude provides effective means for the access to surface information and the quantitative analysis of the terrain. On the basis of Yingkou 1：250000 DEM data and previous research, with the support of the GIS system, using the 0.25km2 mesh size, and applying the basic statistical unit of township. The relief amplitude is extracted. Finally the Yingkou Relief Amplitude grade was drawn through the analysis, Yingkou local undulating terrain is larger, gentler overall. And proper industries of township are superficially defined, which provides a very sample to regional development.
出处
《科技信息》
2010年第23期I0052-I0053,共2页
Science & Technology Information
