基于遥感技术的南宁市城市建成区动态监测

Dynamic Monitoring of Urban Land Use in Nanning Based on Remote Sensing

以南宁市快环以内为研究区域,采用Landsat的多期多光谱遥感影像数据对该区域的土地利用信息进行提取,得到了不同监测期内南宁市建成区动态变化信息,实现了29年来南宁市城市建成区扩展的动态监测。研究结果表明:1987—2016年,南宁市建成区面积增加了20 380hm2,平均每年增长703hm2。一定时间尺度内,社会经济水平是建成区扩展的内在动力,政策和规划对建成区的扩展起着引导和促进作用。

Taking the area within Nanning urban loop as the main study area, and using mul ti-pe-riod multispectral remote sensing data of Landsat to extract land use information in this area,the in-formation of dynamic change of built-up area in Nanning was obtained by different monitoring periods to have realized the dynamic monitoring of urban built-up area expansion in Nanning during the past 29 years. The research results show that from 1987 to 2016, the area of Nanning built-up area in-creased by 20380 hectares, with an average annual increase in 703 hectares. The social economy level is the intrinsic driving force of the expansion of the urban built-up area, and the policy and planning is the guiding and promoting effect on the expansion within a time scale.