基于Landsat卫星影像的滇中地区土地利用/土地覆盖研究

Research of Land Use/Land Cover in Mid-Yunnan Based on the Landsat Satellite Images

本课题基于LANDSAT卫星影像,通过运用ERDAS、ARCGIS等软件进行波段整合、几何校正、拼接、裁剪,根据适宜滇中地区的土地利用/土地覆盖体系,结合监督分类法对滇中地区的土地利用类型进行分类,并进行精度评价和分类后处理等步骤,将滇中地区土地利用类型分为耕地、林地、草地、水域及水利设施用地、住宅用地和其它土地。通过统计得出,滇中地区林地面积占总面积的绝大多数,所占比例高达56.02%,草地位居第二,在总面积中占26.5%,剩余的17.48%包括耕地、水域及水利设施用地、住宅用地和其它土地。

This article was based on Landsat satellite images, did the band integration, geometric correction, mosaic, cropping by using ERDAS, ARCGIS software, according to the land use/land cover system which was fit for mid-Yunnan, combined with supervised classification method to do the classification of the land use types in mid-Yunnan, in addition, carried out accuracy assessment and did the processing after classification and other steps. The land use types of mid-Yunnan were divided into arable land, forest land, grassland, water and water conservancy facilities land, residential land and other lands. Through the statistics obtained, forest land area made up 56.02%, accounting for majority of the mid-Yunnan total area;grassland was in second place, accounting for 26.5% of the total area;the remaining 17.48% included arable land, water and water conservancy facilities land, residential land and other lands.