基于遥感影像的临湘市土地利用/覆盖时空变化研究

以1996年、2006年、与2011年TM影像和2016年OLI影像为主要数据源,利用监督分类方法提取临湘市土地利用信息.应用转移矩阵、变化指数和信息熵模型,分析了土地利用类型的时空变化规律.研究表明,水域以平均每年0.854％ 的速率增加,耕地以平均每年2.327％ 的速率减少,林地以平均每年3.195％ 的速率增加...

Spatial-Temporal Change of Land Use/Cover in Linxiang City Based on Remote Sensing Images

Land use information in Linxiang City is extracted by supervised classification method With TM images in 1996,2006,2011 and OLI images in 2016 as main data sources.Transfer matrix,change index and information entropy model are then adopted to analyze the spatial and temporal change law of land use types.The results show that the water area increases at an average rate of 0.854%/a,the cultivated land decreases at an average rate of 2.327%/a,the woodland increases at a rate of 3.195%/a,the construction land increases at an average rate of 5.424%/a,and the information entropy of land use structure decreases at an average rate of 1.525%/a.During the research period,the structure of land use types in Linxiang City has been transformed obviously,and the results provide theoretical basis for land use planning and ecological environment protection in Linxiang City.