基于TM影像的县域土地利用变化研究——以四川省蓬溪县为例
Land Use Change at County Level Based on TM Image——A Case of Pengxi County in Sichuan Province
李鹏飞 1李向新1
作者信息
- 1. 昆明理工大学国土资源工程学院,云南昆明650051
- 折叠
摘要
根据1993、2001和2009年蓬溪县TM遥感影像,采用RS和GIS技术相结合对研究区域地物的光谱特性、纹理特征和地形信息进行提取和分析,采用最佳波段分类和监督分类相结合对遥感影像进行分类,获取不同土地利用类型统计情况,并结合GIS空间分析工具对各期的分类图像进行了解析,实现了对研究区土地利用类型变化信息的提取和分析.结果表明,1993 ～ 2009年蓬溪县土地利用类型发生了较大变化,其中耕地和林草地面积明显减少,建筑用地增加幅度较大,且具有持续增长趋势.基于TM影像的土地利用信息提取可为县域土地利用变化监测提供技术支持.
Abstract
According to the TM remote sensing image in Pengxi County in 1993,2001 and 2009,spectral characteristics,texture features and topographic information were extracted and analyzed in research region by combining RS with GIS.Remote sensing image was classified based on the optimal band classification and supervised classification,so as to obtain the statistics of different land use types.Combining with the GIS spatial analyst tools,classification images in different stages were analyzed,so as to extract and analyze the change information of land use type in research region.Results showed that the land use type in Pengxi County from 1993 to 2009 had relatively great changes.Among them,areas of farmland and forest and grass land reduced significantly.Construction land enhanced relatively greatly with sustained growth trend.Land use information based on TM image provided technical support for the monitoring of land use change at county level.
关键词
最佳波段/转移矩阵/土地利用/动态监测Key words
Optimal band/Transfer matrix/Land use/Dynamic monitoring引用本文复制引用
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据