基础设施与城市化水平耦合协调关系演变——基于285个地级市的实证研究

Research on the evolution of coupling and coordinating relationship between infrastructure and urbanization——Empirical analysis of China's 285 prefecture-level city

采用耦合协调度模型、空间自相关分析和地理探测器等方法对2006、2010和2015年中国285个地级市基础设施与城市化协调发展的时空分异、空间关联和影响机制进行研究。结果表明:(1)地级市基础设施与城市化水平总体较低,呈现出"金字塔"的等级层次结构。耦合度提升幅度较小,处于磨合阶段;协调度稳步提升,地市间差异较为显著,呈现出东部>东北>中部>西部的时空格局,且中度失调类型的地市占多数。(2)协调度为显著的正相关集聚分布,长三角和珠三角地区为热点区,秦巴山区和四川盆地为冷点区,自东向西由热点逐渐过渡为冷点的总体格局保持相对稳定。(3)基础设施与城市化协调水平的空间分异主要受经济驱动、政策调控和区位交通影响。

Taking the infrastructure and urbanization as the measuring indicator,using the coupled coordination model, spatial autocorrelation and geographical detector method, this paper analyses the spatiotemporal pattern, spatial correlations and impact factors of the coordination development of infrastructure and urbanization of 285 prefecture-level cities in China from 2006 to 2015. Research shows that: 1) The overall level of infrastructure and urbanization in the prefecture-level cities is low,showing a hierarchical structure as the 'pyramid'. The degree of coupling is relatively small, and it is in the running-in stage. With the spatial and temporal patterns of the eastern China>the northeast China>the media China>the western China, the coordination degree is steadily improved, and the difference between the cities is significant. What is more, moderate disorders of the city accounted for the majority.2)Spatial distribution characteristics are also significant, formed with a hotspot with Yangtze River Delta, Pearl River Delta and a cot point area with Qingling-Bashan mountainous region,Sichuan Basin. 3)The spatial differentiation of the level of coordination between infrastructure and urbanization is mainly driven by economy, policy regulation and location traffic.