基于企业投融资关系的2005—2019年长三角城市间关联格局演化研究

Research on the Evolution of Inter-City Association Pattern in the Yangtze River Delta from 2005 to 2019 Based on Firm Investment and Financing Relationship

企业间联系突破了行业及从属关系局限,能够更加全面和准确地刻画城市间关联。但囿于数据源及技术方法限制,基于长时序企业间真实联系的城市网络实证研究较为缺乏,区域一体化、中心城市转型升级等规划议题急需大数据分析支撑。文章遵循“节点-路径-群落”的区域网络结构分析思路,利用企业间的全部股权关系来研究2005—2019年长三角城市间关联的时空格局与演变过程。结果显示,长三角当前处于从局域融合转向全域融合的中间阶段,以上海与省会/副省级城市间联系为稳定骨架的稠密化、多中心网络正逐步形成;上海对全域的辐射带动作用超越行政边界,安徽是长三角一体化亟待补齐的“短板”;苏浙皖行政区边界阻隔效应突出,南京具有明显的功能异质性特征,可以利用“连锁股东”身份来推动长三角中西部地区的跨界联系。

The connection between firms breaks through the limitations of industry and subor-dination,and can more comprehensively and accurately describe inter-city linkages.However,due to the limitations of data sources and technical methods,there is a lack of empirical research on the relationship pattern between cities based on the real connection between enterprises in a long time series.Practical issues such as regional integration and central cities’upgrading urgently need the support of big data analysis.Following the idea of“node-path-community”,this paper uses the total equity relationship between enterprises to study the temporal and spatial pattern and evolution process of cities’linkages in the Yangtze River Delta(YRD)from 2005 to 2019.The results show that YRD is currently in the middle stage from local integration to global integration,a dense and multi-core urban network with the connection between Shanghai and the provincial capital/sub-provincial cities as the stable skeleton is taking shape;Shanghai’s radiating and driving effect on the whole region goes beyond the administrative boundary,and Anhui is a“short board”that needs to be supplemented urgently in the integration of the YRD;The economic traces of Jiangsu,Zhejiang and Anhui administrative regions are still prominent.Nanjing has obvious functional heterogeneity and can use the identity of“chain shareholder”to promote cross-border ties in the central and western regions of the YRD.