遥感动态监测太原市城市建设用地及其扩展变化分析

Remote Sensing Dynamic Monitoring and Expansion Change Analysis of Urban Construction Land in Taiyuan City

以20世纪70年代、1993年和2010年3个时段的遥感TM影像为依据,应用遥感、地理信息系统技术进行了汾河流域太原市的实体边界提取,获得太原市城市建设用地不同时期的数据资源,对太原市城市建设用地近30 a的变化特征进行定量分析,结果表明,太原市近30 a一直处于城市快速扩展阶段,且向南扩展。城市建设用地扩展变化及发展方向主要受地形等自然因素和人口、经济及政策等人文因素影响。

By using the remote sensing and geographical information system（GIS） technology to extract Taiyuan entity boundary in Fenhe basin basing on remote sensing image in the years 1970s,1993 and recent period 2010,this article gets different periods of Taiyuan construction land data resources to make quantitative analysis on construction land change features of recent thirty years in Taiyuan,and the result shows Taiyuan is on fast-propagating stage in recent thirty years and is extending the range in a southward direction.The expansion change of urban construction land and development direction are mainly affected by natural factors such as the terrain and human factors such as population,economic and policy.