区域一体化视角下长三角城市群城市竞合发展研究

Research on the Competition and Cooperation Development among the Cities of Yangtze River Delta Urban Agglomerations from the Perspective of Regional Integration

随着长江三角洲区域一体化上升为国家战略,长三角城市群在新时期社会主义现代化建设全局中扮演着越来越重要的角色。本文基于生态位理论,以长三角城市群26个典型城市为研究对象,选取2004—2016年经济、社会、人口、环境以及城镇化数据,综合使用城市生态位宽度、分异度、重叠度以及系统聚类等分析方法,对长三角城市群的城市生态位及动态变化进行深入分析。研究结果表明:(1)各城市综合发展水平绝对量的多年变化不大,且与生态位宽度保持了较为同步的变化趋势,即各城市在资源占有和利用方面存在关联和影响关系。(2)长三角城市群各城市的生态位总体差异不断缩小,呈现出生态位趋同、竞争加剧的趋势,其中经济生态位发挥的作用最为显著。(3)长三角城市群已经形成以上海为核心城市,南京、苏州、杭州和合肥为节点城市,其余21个城市为网络城市的"单核—四节点"等级圈层结构。针对研究结论,本文结合生态位错位、扩充、协同发展等理论提出了若干政策建议,以供参考。

As the regional integration of the Yangtze River Delta rises to national strategy,the Yangtze River Delta urban agglomerations are playing an increasingly important role in the overall socialist modernization construction in the new era.Based on ecological niche theory,this paper takes 26 typical cities in the Yangtze River Delta urban agglomeration as the research object,selects data in terms of of economy,society,population,environment and urbanization from 2004 to 2016,and makes an in-depth analysis of the urban ecological niche and dynamic changes of the urban agglomerations in the Yangtze River Delta by comprehensively using the analysis methods of urban ecological niche breadth,differentiation,overlap and systematic clustering.The research results show that:i.the absolute amount of the comprehensive development of each city has not changed much over the years,and it has maintained a relatively synchronized changing trend with the ecological niche breadth,that is,each city has an associative and influencing relationship in the resource occupation and utilization;ii.the overall differences of ecological niche among cities in the Yangtze River Delta urban agglomerations are shrinking,showing a trend of ecological niche convergence and intensified competition.Among them,the economic niche plays the most significant role;iii.the Yangtze River Delta urban agglomerations have formed a"single-core-four-node"hierarchical structure with Shanghai as its core city,Nanjing,Suzhou,Hangzhou and Hefei as node cities,and the remaining 21 cities as network cities.In response to the research conclusions,this article puts forward a number of policy recommendations based on the theories of ecological niche dislocation,expansion and coordinated development for reference.