2007—2017年宿迁市建设用地空间扩展情况分析

Spatial analysis of construction land expansion in Suqian during 2007—2017

采用宿迁市2007年、2012年和2017年3个时相的遥感(RS)数据,借助地理信息系统(GIS)空间分析工具,对2007—2017年宿迁市建设用地扩展的空间特征进行研究.研究结果表明:宿迁市的建设用地进入高度扩展时期,宿城区、泗阳县和沭阳县的建设用地空间扩展强度占据优势地位.同时,宿迁市建设用地扩展强度空间差异较大,2007—2012年强扩展型和稳定型区域主要位于宿迁市的东部和西部,2012—2017年各种扩展类型区域分布较为分散,剧烈扩展型区域主要分布在北部,强扩展型区域主要分布在中部,弱扩展型区域主要分布在西部,稳定型区域主要分布在南部.

By using Geographic Information System(GIS)spatial analysis tools,the spatial characteristics of construction land expansion within Suqian during 2007—2017 were studied by employing the remote sensing(RS)data of Suqian in 2007,2012 and 2017.The results showed that the construction land in Suqian had entered a stage of rapid growth since 2007.Besides,the spatial expansion intensity of construction land in Sucheng District,Siyang County and Shuyang County had a dominant position.Meanwhile,the spatial difference of expansion intensity of construction land within Suqian was obvious.The strong expansion type and stable type were in the east and west of Suqian respectively between 2007 and 2012.However,the distribution of all kinds of expansion types was decentralized.The severe expansion type mainly distributed in the north,the strong expansion type in the middle,the weak expansion type in the west,and the stable type in the south of Suqian.