选择1987年、1995年、2000年和2006年4个年份的安徽省遥感影像,提取17个地级城市用地面积数据,采用首位度、分维数、结构容量、城市规模基尼指数等指标对安徽省的城市规模分布及其变化进行了分析。结果显示,安徽省首位城市发展强劲,小城市发展不足,城市规模有向少数城市集中趋势,城市体系趋于复杂;以建成区面积作为衡量城市规模的指标,17个城市规模分布符合位序—规模法则;城市规模分布的均衡度不断增强,建成区用地规模总量增速加快;根据位序—规模曲线的形态,这些城市按建成区面积可分为4类。结合城市的空间布局和分类结果认为,安徽省的区域差异在增大,研究结果可为安徽省总体发展规划和安徽省城镇体系规划提供参考。
The urban land-use in 1987,1995,2000 and 2006 of 17 cities in Anhui Province were obtained from remote sensing images.Based on urban primary indexes,fractal dimension,dimension of capacity and Gini coefficient,the City Size Distribution and its changes of 17 cities in Anhui were studied.The results indicated that:the primary city in Anhui Province developed very quickly,while small cities developed not enough.City size tended to centralize to few cities,and the city system was becoming complex gradually;rank-size law of 17 cities was approved based on urban land-use,which was referred to city size;the equilibrium degree of city size increased markedly.Total size of 17 cities' urban land-use was increasing quicker and quicker.According to the curve shape,we claimed that Anhui 17-city could be divided into four categories.Taking into account of the spatial distribution of 17 cities,the regional difference was increasing.This paper could give a reference to the overall development and urban system planning of Anhui Province.