TM图像在城镇用地扩张监测中的应用

Application of TM Image on Monitoring Urban Land Expansion

在城镇建设与耕地占用矛盾日益突出的我国 ,加强城镇用地扩展动态监测 ,对引导城镇发展过程中科学用地有着重要的意义。TM图像以其“综合性、多波性、多时相、信息更新快、成本低”等特点 ,已成为资源与环境监测中的主要技术手段。本文以TM图像为监测信息源 ,以江西省南昌市为例 ,尝试了TM图像在城镇用地动态扩张监测中的应用。结果表明 ,通过以目视解译为主的多种解译方法的综合 ,并借助土地信息系统的强大空间分析功能 。

The urban over-expansion has been one of the main factors causing contradiction between human and land in China, and it is very important to enhance monitoring urban land expansion. In this paper, taking TM image as information resource and making use of GIS, the urban land expansion of Nanchang City, Jiangxi Province was analyzed. The results showed that the method of application of TM image on monitoring urban land expansion is feasible.