基于RS和GIS的大运河沿岸土地利用/覆被变化分析

Analysis on Land Use/Land Cover Changes of the Grand Canal Based on RS and GIS

根据京杭大运河沧州到天津地区1987、1993、2000年的Landsat TM/ETM影像数据,利用RS和GIS信息获取技术、空间分析技术和数理统计方法,分析了该区域土地利用的数量变化和空间变化特征,明确了土地利用变化的主要类型和方向,并初步探讨了土地利用变化的社会经济发展原因。结果显示,该流域土地利用以耕地和园地林地为主,1987~2000年耕地和园地林地减少,建设用地大幅度增加,耕地与园地林地的相互转化及农用地转化为建设用地是研究区主要的土地利用变化类型。

Based on Landsat TM/ETM image data in the Grand Canal between Cangzhou and Tianjin in 1987,1993 and 2000,the quantitative changes and spatial change characteristics of land use in these regions were analyzed by using RS and GIS information acquisition technology,spatial analysis technique and mathematical statistic method.The main types and directions of land use changes were confirmed.The social and economic development reasons of land use changes were preliminarily discussed.The results showed that the major land covers along the Grand Canal were cropland and woodlands. From 1987 to 2000, the forest and cropland decreased, but the construction land greatly increased. The conversions between forest and cropland and the conver- sions between cropland and construction land were the major patterns of land use changes in the study area.