长江经济带人口城镇化时空差异格局研究

Study of the urbanization spatial differentiation of the Yangtze River Economic Belt

通过运用泰尔指数、探索性空间分析等方法,采用我国第五次和第六次人口普查的数据对长江经济带户籍人口和常住人口城镇化的时空差异格局加以研究,研究结果如下:第一,长江经济带人口城镇化水平的空间格局呈现出较为明显的"圈层"特征。长三角城市群、长江中游城市群表现出较小的差异性,成渝城市群,黔中城市圈和滇中城市圈表现出首位城市具有较高的城镇化水平、城市圈内部的差异性较大的特征。第二,无论从常住人口看还是从户籍人口看,自2000年到2010年长江经济带人口城镇化水平的差异变小了,但是从各城市群分组的差异来看,常住人口城镇化水平的组间差异显著大于户籍人口城镇化水平的组间差异,表明人口有由西部向东部单向集聚的趋势。第三,从LISA集聚图可以看出,从2000年到2010年,在长江经济带的东部形成了城镇化水平的"高高"集聚类型区,在长江经济带的西部(西南部)形成了"低低"集聚类型区,同时2010年的集聚度要比2000年显著。

By the means of Theil Index and the ESDA methods this articleanalyzed the spatial difference of the urbanization of the Yangtze RiverEconomic Belt. Using the resident population and household registeredpopulation data of the Fifth Census and the Sixth Census, we found that： 1）The spatial distribution of the urbanization level of the Yangtze RiverEconomic Belt has obvious characteristics of agglomeration. Every city grouphasa leading city, the first city whose urbanization level is much higherthan that of the rest cities. 2） Either measured by resident population or byhousehold registered population, the difference of the urbanization of theYangtze River Economic Belt has become smaller from 2000 to 2010, but the gapbetween groups measured by resident population is much bigger than thatmeasured by household registered population, which shows a one-way west toeast trend of population emigration. 3） A High-High cluster type area ofurbanization has formed in the east of the Yangtze River Economic Belt, andaLow-Low cluster type area formed in the west （southwest） of the Yangtze RiverEconomic Belt, from 2000 to 2010. The agglomeration degree in 2010 is higherthan that in 2000.