基于遥感的龙岩市城区扩展研究

Urban expansion of Longyan based on remote sensing

基于1988年、1995年、2000年、2004年、2009年、2013年、2016年的Landsat TM/OLI影像数据,采用监督分类法和目视解译法提取城市建成区信息,分析龙岩城市扩展的特征。研究结果表明:近30年龙岩城区面积不断扩张,扩展速度经历高速增长(1988～2000年,年增长率7.80%～17.54%)、平缓过渡(2000～2013年,5.80%～6.76%)、低速增长(2013～2016年,年增长率3.23%)三个阶段。

Based on Landsat TM/OLI remotely sensed data of 1988,1995,2000,2004,2009,2013 and 2016,a series of urban construction areas of Longyan were extracted using the methods of supervised classification and visual interpretation and the characteristics of urban expansion were studied.The results showed that:in the past thirty years,the urban area of Longyan has been expanding continuously,the expansion speed has experienced rapid growth period(7.80%-17.54% from 1988 to 2000),medium growth period(5.80%-6.76% from 2000 to 2013)and slow growth period(3.23% from 2013 to 2016).