基于多模型的长三角中心城市区域经济联系定量分析

Quantitative Analysis of Economic Interaction Strength of Central Cities in the Yangtze River Delta based on Multiple Models

区域经济联系的定量分析是区域经济一体化的前提。2008年"长三角一体化"正式从学术层面上升为国家战略层面。随着长三角一体化的加速,长三角各等级中心城市的空间分布呈现出"小集聚、大分散"的特点且各中心城市间的经济联系量呈辐射状圈层结构。长三角一、二级中心城市对其他低等级中心城市具有绝对的经济辐射力,但是经济辐射带"重叠区"与经济辐射带"塌陷区"并存,上海、南京、杭州和宁波等城市均具有较大的经济辐射半径,经济辐射带与其他城市均有重叠,而苏北和浙江南部地区的部分中心城市,其经济辐射半径甚至不能覆盖其行政区范围,出现大范围的经济辐射带"塌陷区"。

Analysis of economic interaction strength is the premise of regional economic integration. The ＂Yangtze River Delta Integration＂ formally ascended from academic level to national strategic dimension in 2008. With the integration of the Yangtze River Delta, the spatial distribution of all ranks of central cities in the Yangtze River Delta shows the characteristic of ＂local cluster, regional dispersion＂ and the economic contact of central cities presents the regional layered spatial structure, the first and second ranks of central cities has absolute economic radiometric force on the other lowerrank central cities but the overlap and gap of economic radiometric belt co-exist.