基于GIS的西部生态脆弱区居民点空间信息分析研究

GIS Spatial Analyst: Research on Western Poor and Eco-Environment Frangible Area-A Case Study of Longxi County in Gansu Province

本文运用GIS的空间分析的一些基本技术,在1∶25万国家基础地理数据、TM影像、土地利用详查等数据整理的基础上,对西部贫困和生态脆弱的典型地区—甘肃省陇西县作了相关的空间分析研究,研究方法采用VBS语言以及ArcWorkstation的AO环境下AML语言开发,提取了陇西县居民点的经纬度、高程、坡度和坡向、居民地与水系分布的相关信息,并在此基础上对提取出的空间信息作了相应的分析。最后通过相关分析得出陇西县居民点分布空间属性的相关系数矩阵。本研究方法为位于我国西部生态脆弱地区甘肃省陇西县居民点的生态移民、城镇和乡村体系规划提供科学依据。

Utilizing the basic spatial analysis method, and based on the fundament national geographical database of CASW, this paper puts forward a VBS language and AML language programmed by the ArcWorkstation environment licensed by ESRI corporation, tomine the information in the database, which comprises the slope, aspect, water resources distance and elevation of every residential spot in TM image,and analysis the information mined to help the policy maker of local administration in the eco-environment immigration to alleviate the press imposed by the poverty stricken local residents. The procedure of the spatial analysis and the method of mining the information of longitude, latitude, elevation, slope, aspect and water resources distance will facilitate other researchers in the spatial analysis under the ArcGis environment.