中国市域城市化与经济发展水平的关系研究

从市域尺度分析城市化与经济发展水平的关系是精确定位各地区城市化水平的关键。基于2010年世界上185个国家与中国337个地级市(州)的城市化率和人均GDP数据,通过GIS等定量方法,可以分析城市化水平与经济发展水平的市域格局,进而探讨二者协调性的空间聚集状态及省内分布特征。研究表明,中国地级市的城市化与经济发展水平之间虽呈显著相关,但不同城市二者的协调性却不一致,337个地级市中仅有36个处于协调状态,且协调性呈明显的空间聚集现象。各省份内部二者协调性的分布既有相似性也有差异性,即位于省份中心位置的城市大多城市化超前,处于省份边缘的城市大多城市化滞后。而西北、东北地区的省内差异较大,中部地区的省内差异较小。

关于合肥升级为长三角副中心城市的研究

国务院印发《关于依托黄金水道推动长江经济带发展的指导意见》中指出:长江三角洲城市群以上海为中心,以南京、杭州、合肥为副中心。在这份指导意见中,首次明确了合肥为长三角城市群的"副中心城市"。这对于合肥来说,既是一项光荣的使命,也是一份更大的责任,既是一次难得的机遇,也是一个巨大的挑战。

An Empirical Study on Chinese City Network Pattern Based on Producer Services

Globalization and informatization have accelerated city networking process over the world, which makes research on city network a hot topic in the fields of urban geography and economic geography. With Chinese economic structure adjustment and city economic growth, producer services have begun to play an increasingly important role in city-region networking. This paper employs the methodology of world city network to analyze and explain the spatial development characteristics of China's urban network system based on the data of nationwide producer services enterprise network. The research result indicated that the distribution of producer services network has a positive effect on the development of Chinese city networks. City network connectivity is closely related to the significance of city in producer services development, and the former will gradually decline with the drop of the latter. Accordingly, the 64 cities can be divided into the national central cities, regional central cities, sub-regional central cities and local central cities in accordance with their position and role in the nationwide producer services network. It is concluded that high-grade cities with quality producer services dominate the pattern of Chinese city networks and there emerges three spatial agglomerations of producer services enterprises in Changjiang (Yangtze) River Delta, Zhujiang (Pearl) River Delta and Beijing-Tianjin-Tangshan Economical Region. Moreover, the distribution of different producer services industry varies from city to city, which also affects the characteristics of network development.

Spatial Pattern Evolution and Casual Analysis of County Level Economy in Changsha-Zhuzhou-Xiangtan Urban Agglomeration, China

In order to evaluate whether or not the county units′ economy in the Changsha-Zhuzhou-Xiangtan(Chang-Zhu-Tan) Urban Agglomeration was growing as expected, this study analyzed the spatial economy pattern at county-level by using the Exploratory Spatial Data Analysis(ESDA) method. In this process, the global Moran′s I and local Getis-Ord G*i indexes were employed to analyze indicators including per capita GDP and three industrials(i.e. primary, secondary and tertiary industry) from 2000 to 2010. The results show that: 1) the county units′ economy in the Chang-Zhu-Tan Urban Agglomeration has exhibited a strong spatial autocorrelation and an accelerated integration trend since 2008(Moran′ s I increased from 0.26 to 0.56); 2) there is a significant difference in economy development between the northern and southern county units in the Chang-Zhu-Tan Urban Agglomeration: the hotspot zone with high economic level was formed among the northern county units whereas the coldspot zone with low economic level was located in the southern areas. This difference was caused primarily by the increasingly prominent economic radiation effect of Changsha ′upheaval′; 3) town density, secondary industry, and the integration policy are the major contributors driving the evolution of the spatial economy pattern in the Chang-Zhu-Tan Urban Agglomeration.

上海市域人口分布优化和差别化人口政策研究

我国实行的是广域市制,超大特大城市、乃至大城市地域范围一般都比较广,小的几千平方公里,大的几万平方公里,并且其地域范围内一般都具有城区、郊区、新区、新城、市、县、小城镇、乡村等多样化的空间形态,这些多样化的空间形态,其资源禀赋、发展基础和条件差异性很大,均质性不强。随着我国超大特大城市单体规模的不断扩大和人口、功能不断集聚,超大特大城市主城区的宜居性将逐步降低,城市风险将逐步提高,经济总量将难以得到有效持续增长。因此,适时地优化超大特大城市市域空间格局,将超大特大城市主城区过密的人口和功能向地域范围内的郊区、新区、新城、市、县进行疏解或扩散,特别是人口、产业、公共设施在市域范围内不同区域的均衡配置和实施城区、新城(新区)、郊区等不同区域的差别化人口政策,有助于市域范围内不同区域的区位优势、资源禀赋充分发挥,有助于促进市域范围内不同区域的平衡充分发展,也有助于促进市域范围经济总量的进一步提升,还有助于促进以超大特大城市为中心的都市圈和城市群的有效发展。

Spatial Pattern and Regional Types of Rural Settlements in Xuzhou City,Jiangsu Province,China

This paper principally focuses on the morphological differences,spatial pattern and regional types of rural settlements in Xuzhou City of Jiangsu Province in China.Using satellite images of Xuzhou City taken in 2007 and 2008 and models of exploratory spatial data analysis(ESDA) and spatial metrics,the paper conducts a quantitative analysis of the morphological pattern of rural settlements,and finds significant characteristics.First,rural settlements in Xuzhou City are significantly agglomerated in terms of their spatial distribution;meanwhile,there is significant variation in the geographical density distribution.Second,the scale of rural settlements in Xuzhou City is larger than the average in Jiangsu Province,and the histogram of the scale data is more even and more like a gamma distribution.There are a significant high-value cluster in the scale distribution,and local negative correlation between the scale and density distribution of rural settlements in Xuzhou City.Third,the morphology of rural settlements in Xuzhou City shows relative regularity with good connection and integrity,but the spatial variation of the morphology is anisotropic.Finally,according to the characteristics of density,scale,and form of rural settlements,the rural settlements of Xuzhou City are divided into three types:A high-density and point-scattered type,a low-density and cluster-like type and a mass-like and sparse type.The research findings could be used as the scientific foundation for rural planning and community rebuilding,particularly in less-developed areas.