基于RS和GIS技术下城镇空间变化分析及应用研究

城镇空间变化分析，是城镇发展趋势分析的基础，对城镇远景规划有十分重要的指导作用。它也是区域生态环境演变调控研究的重点内容和基础内容。本文将引用RS和GIS技术方法对城镇空间变化进行研究。其基本思路是，利用RS的TM卫片数据进行宏观监测，再利用GIS的空间分析功能，方便地进行城镇分布状况和迁移变化的空间分析与评价。该技术方法已被成功地应用于新疆城镇分布状况及动态变化研究项目中，收到较好效果。

ANALYSIS ON SPATIAL CHANGE OF TOWNS BASED ON RS AND GIS TECHNIOUES AND RESEARCH OF ITS APPLICATION

The analysis of the town spatial change underlies the developing trend of the towns. It is very important for directing the far future town planning. It is also the major content and the basic matter in the research on the control of the regional eco-environment evolution. This paper utilizes the RS and GIS technology for studying the spatial changes of the town. Here is the basic flow chart: first, to monitor macroscopically with TM land-satellite data to establish the database of town-space. Secondly, to analyze and evaluate expediently the distribution and the migratory changes of the towns by the function of GIS spatial analysis.Thirdly, after overlaying multi-period town data ,to get hold of diversifications between the different types, and use the matrix of town data of the land changes to realize Spatial analysis. This method is used successfully in the project about studying the distributing status and dynamic changes of townscin Xinjiang. To analyze the change rates and the important degree of the land-types in the past ten years, the results of dynamic changes of the towns have been gotten in Xinjiang. It is accord with the changes between the augment rate of town land-use and the increase of population in Xinjiang and has exerted good effect in relating researches.