基于RS的重庆市渝北区土地利用/覆被动态变化研究

Research on Dynamic Change of Land Use and Cover Based on RS in Yubei District of Chongqing

渝北区作为重庆五个功能分区中都市功能拓展区的重要组成部分,其土地利用/覆被变化直接影响到自身的区划定位。利用遥感和地理信息系统相结合的技术方法,解译重庆市渝北区2007年和2014年2期Landsat遥感影像,获得该地区近7年的土地利用/覆被动态变化数据。结果表明,2007-2014年近7年间,渝北区耕地数量总体维持平衡但地域变化剧烈;林地不断被开发成建设用地和耕地,地域变化十分明显;建设用地面积持续增加,布局有失衡趋势;湖泊等水体面积锐减,未利用地全部转化为了其他类型的用地类型。

As an important component of city functional expanded area included in the five functional areas of Chongqing,the land use and cover change of Yubei District would have direct influence on its function positioning. We could get the data of dynamic change of land use and cover by interpreting the Landsat remote sensing image in 2007 and 2014 based on the knowledge of remote sensing and GIS. The results showed that from 2007 to 2014, the total cultivated land had maintained balance but its geographical change was serious; plenty of woodland had been transformed to construction and cultivated land; construction land increased very fast and began to become imbalanced; river and lake became less and less; almost all unused land had been transformed to other types of land at the end the 2014.