基于TM和ASTER影像的福州市土地利用变化分析

20世纪80年代以来,福州市作为我国首批14个沿海开放城市之一,经历了快速发展时期,其土地利用发生了巨大变化.研究较长时期区域土地利用的时空变化,需要多源遥感数据结合应用.文章基于TM和ASTER遥感影像,提取福州市1988~2004年16年的土地利用变化信息,分析土地利用变化的数量、速率和空间特征.结果表明,福州市在这16年间耕地面积比基期减少了33%,建设用地比基期增加了88%,土地利用类型转换的空间特征反映地貌条件和城市扩展策略的共同制约.研究采用多源遥感数据结合应用的方法,有助于延长区域土地利用变化监测数据的时间序列,可供同类研究借鉴.

Monitoring and analyzing of land use change in Fuzhou City based on TM and ASTER images

As one of the coastal provincial capitals opened to the world,Fuzhou City had experienced a rapidly developing period and its land use had changed remarkably since 1980's.In order to monitor long term changes of regional land use,integrated use of multi-sources remote sensing data should be needed.In this paper,the spatiotemporal information of land use change in Fuzhou City during 1988-2004 is extracted based on a set of TM and ASTER images.The land use change of Fuzhou City during this important period is analyzed quantitatively and spatially.The driving factors of land use change are also discussed.The results show that cultivated land decreased 33% of the original area and built-up land increased 88% during the past 16 years.The spatial characteristics of land use type transformation reflected the restriction of local topographical condition and urban expansion strategy.The methodology used in this research project,integrated using of multi-sources remote sensing images,can help to extend the data sequence of regional land use monitoring.