近20年来泰州市建设用地扩展规律研究

以多时相Landsat、TM/ETM卫星影像为数据源,运用GIS软件提取泰州市建设用地多时相的用地信息,运用扩展强度指数、空间自相关指数等方法分析泰州市建设用地的扩展规律,并提出泰州市建设用地扩展主要驱动因子;结果表明,泰州建设用地在扩展强度上经历了缓慢扩展—中速扩展—缓慢扩展的过程;挖掘出3个内在扩展模式：点状扩展、轴间扩展、网络扩展;泰州建设用地扩展热点区主要集中在海陵区、高港区和姜堰市,冷点区主要集中在兴化市北部和靖江、泰兴、姜堰3城市之间的空隙地带;从自然和社会两个角度综合提出了泰州市建设用地扩展的4个重要的驱动因子：经济集聚与扩散、人口扩张、交通脉动、政府决策。

Research on the regional construction land growth of Taizhou City in the last 20 years

Based on multi-temporal LandsatTM and ETM satellite images,with the help of GIS software,The article extracts the construction land information of Taizhou city and analyse the expansion law of construction land in Taizhou and puts forward the main driving factors of construction land expansion by using spatial autocorrelation index.The results are as follows： the expansion of construction land in Taizhou has experienced a slow expansion-the expansion of medium-speed-slow expansion process;by analysing the process of construction land expansion,based on the different features of the various stages of construction land expansion.The article find out three internal expansion mode： point of expansion,inter-axis of expansionand network expansion,Taizhou Metropolitan Area and Jiangyan Area are the hot-spots for the construction land expanding,while the north of Xinghua and the boundary among Taixing,Jingjiang and Jiangyan are large cool-spots.（4） From natural and social view of the expansion of construction land in Taizhou,The article summarizes four key driving factors： economic concentration,the spread of population,traffic trends and government decision-making.