基于IKONOS影像的官司河流域土地利用景观分类与制图

Classification and Mapping of Land Use Landscape in Guansi River Basin in Mianyang City of Sichuan Province Based on IKONOS Image

以IKONOS影像为工作底图,在GIS的支持下,对官司河流域土地利用景观类型进行了人工目视解译。结果分析表明,官司河流域土地利用类型主体是耕地,占流域面积的50.88%,这与该流域人口密集、种植程度高密切相关;有林地面积占流域面积的37.43%,说明该流域的森林覆盖率较高,生态环境质量较好;水域面积占流域面积的6.87%,说明流域水资源丰富,生产灌溉条件优越,也使得人类在土地资源上进行的生产活动强度较大。

With IKONOS image as working map,under the support of GIS,the classification of land use landscape in the Guansi River Basin was made through visual interpretation.The study results showed that cultivated land was the main type of land use in Guansi River Basin,accounting for 50.88% of the catchment＇s area,which was closely related with dense population and high degree cultivation.Forest area accounted for 37.43% of the basin＇s area,which showed that the forest cover rate was higher and the ecological environment quality was better.Water area accounted for 6.87%,which showed that Guansi River Basin had abundant water resources and excellent conditions for irrigation,which led to peoples＇ greater intensity of production activity on the land.