遥感影像用于城市扩展监测的研究

通过焦作市城市扩展监测的实践，对以多时相遥感影像监测城市扩展进行了研究，阐述了以地形图及TM遥感影像为数据源，利用RS和GIS软件进行图像处理，提取城区扩展的变化信息，并对其扩张变化的主要方向、速度及规律进行监测和分析；论述了交通建设、政策法规、经济投资区的建设和当地的自然地理环境对城市的扩展速度和方向的影响。

Application of Remote Sensing Image to the Monitoring of Urban Expansion

The essence of the urban expansion is the dynamic change of the usage of land. Taking Jiaozuo as an example, this paper uses the soft-ware of RS and GIS to process the multi-time-phase TM remote sensing images (1988, 1992, 2001)and extract the information of city expansion change to monitor and the analyze the main di- rection of the expansion change of the city and its speed. The valuable information is offered for the future planning and development of the city. The result indicates that since 1992, Jiaozuo has entered the stage of fast development, and expands toward the Hi-tech Developmental Zone in the southern city on large scale during which the traffic con- struction, policy laws and regulations, the construction in economic investment districts as well as the natural ge- ographic environment all greatly contributes to the speed and direction of urban expansion.