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基于2000年、2005年和2010年TM影像、2013年的SPOT影像、相关部门基础地理数据,采用面向对象分类技术提取了2000年、2005年和2010年福建省城乡建设用地的空间信息,利用城乡建设用地扩张强度指数、扩张速度指数和相对变化率分析城乡建设用地扩张的幅度、速度;利用Moran’s I指数、LISA指数和Gi指数分析空间相关性.研究结果表明:10 a间福建省城乡建设用地总体上处于加速扩张的状态,扩张总面积为2 231.199 0 km~2,年平均增长率为7.97%,但在2000年至2005年、2005年至2010年2个时间段内呈现不同的增长趋势,其中前5 a的扩张速度明显高于后5 a,10 a间全省各设区市中增长较快的有福州市和厦门市,其增长速率均超过了全省平均增长速率.通过对两个时期城乡建设用地变化值的空间相关分析显示,2000年至2010年间福建省城乡建设用地的扩张具有明显的空间集聚性,LISA集聚图显示10 a间福建省城乡建设用地变化在显著性水平范围内,集聚形式以高至高集聚、低至低集聚为主.
Based on TM images in 2000, 2005 and 2010, SPOT images in 2013 and basic geographic data of relevant departments, spatial information of urban and rural construction land in Fujian Province in 2000, 2005 and 2010 was extracted by using object-oriented classification technology, The index of land expansion, the rate of expansion and the relative rate of change of construction land use to analyze the magnitude and speed of expansion of urban and rural construction land use.The Moran’s I index, LISA index and Gi index were used to analyze the spatial correlation.The results show that: As a whole, the total area of expansion is 2 231.199 0 km ~ 2, with an average annual growth rate of 7.97%. However, during the period from 2000 to 2005 and from 2005 to 2010, there are different growth trends , Of which the expansion rate of the first 5 years was significantly higher than that of the latter 5 years. Fuzhou and Xiamen cities, which grew rapidly in all the districts and cities in the province for 10 years, all surpassed the average growth rate of the province. The spatial correlation analysis of urban and rural construction land use change between the two periods shows that the expansion of urban and rural construction land in Fujian Province between 2000 and 2010 has obvious spatial agglomeration. Establishment of the province of urban and rural construction land change in the significance level range, in the form of high concentration to high concentration, low concentration of low-oriented.