基于传统和五普口径的江苏省城市规模分布时空演变研究

SPATIO-TEMPORAL DYNAMICS OF CITY-SIZE DISTRIBUTION IN JIANGSU PROVINCE BASED ON BOTH TRADITIONAL STATISTICAL STANDARD AND THE FIFTH NATIONAL CENSUS STATISTICAL STANDARD

基于传统和第五次人口普查两种口径,结合相关模型分析了江苏省城市规模分布的时空演变特征:①城市体系规模结构基本满足位序—规模分布规律,分布的集中性趋于减弱而均衡程度则趋于增强;②城市GNI指数的区域差异明显,苏南>苏北>苏中;③统计口径影响很大,相比而言,五普口径较传统口径能够更加真实地反映城市规模分布演变的总体趋势。研究表明,经济因素与城市规模分布变动呈明显的相关性,但政治结构因素(行政区划调整和统计口径)是引起城市规模分布演变的根本原因。

The paper collected the data of urban population from 2000 to 2006 for each city in the Jiangsu province,and analyzed the characters of the evolution of the urban size structure by analyzing the hierarchical size structure,urban primacy indices,the Gennich coefficient model the fractal feature and the spatial evolution.After comparing and calculating the data of urban population based on both traditional statistical standard and the fifth national census statistical standard.This paper investigates the spatio-temporal dynamics of city-size distribution in Jiangsu province.First,the urban system in Jiangsu province meets rank-size distribution but does not follow Zipf model,the city is a mature organization system,and the concentration distribution of urban size tends to be reduced and balanced level tend to be enhanced;second,the regional differences in urban GNI index,and that,southern Jiangsu is much higher than northern Jiangsu,the Suzhong is the lowest.Third,different statistical standards influence the city-size distribution deeply.Compared with traditional statistical standard,the fifth national census statistical standard can reflect the size distribution of the evolution of urban overall trends.Further studies show that economic factors and city size have a linear correlation relationship.Further more,the region division adjustment and the statistical standard are the key factors to the city size changing.