跨省域一体化对共同富裕的影响研究——来自长三角的经验证据

Research on the Impact of Cross-Provincial Integration on Common Prosperity: Empirical Evidence from the Yangtze River Delta

在全面建设社会主义现代化国家、大力推进区域一体化战略的背景下,能否实现共同富裕是通过更大范围的跨省域一体化来推动经济高质量发展的关键,但目前鲜有文献指出它们之间的关系。将共同富裕分解为益贫式增长率和地区收入差距两个维度,通过百度搜索大数据和社会网络分析方法,构建了一种一体化水平的全新度量方式。在计算长三角41座城市2011—2020年跨省域一体化水平的基础上,分析跨省域一体化对于共同富裕的影响。研究结果表明,跨省域一体化对于共同富裕有着显著的正向促进作用,长三角跨省域一体化程度的提高有助于提升益贫式增长率,降低地区收入差距;跨省域一体化对于共同富裕的促进作用主要是通过对于农村地区及欠发达地区的拉动来实现的,对城市地区和发达地区的作用则相对较弱,跨省域一体化中的“扩散效应”而不是“集聚效应”在起着主导作用。在采用了更换自变量、更换因变量、工具变量检验后,结论依然稳健。基于主要结论,提出针对性的政策建议:一是扩大跨区一体化的范围,实现更大范围的共同富裕;二是引导资本节约型技术进步的发展,促进劳动生产率的提高;三是鼓励要素向区域内欠发达地区迁移,助推区域一体化的扩散效应。

Under the background of building a modern socialist country in an all-round way and vigorously promoting the regional integration strategy,whether common prosperity can be achieved is the key to promoting high-quality economic development through a greater range of cross-provincial integration.However,there are few literatures pointing out the relationship between them.This article decomposes common prosperity into two dimensions:the growth rate that benefits the poor and the income gap between regions.Using big data from Baidu searches and social network analysis methods,a new measurement method for the level of integration is explored and applied to calculate the level of cross-provincial integration for 41 cities in the Yangtze River Delta from 2011 to 2020.Empirical evidence is provided to examine the impact of cross-provincial integration on common prosperity.The research results show that cross-provincial integration has a significant positive effect on common prosperity,and increasing the level of cross-provincial integration in the Yangtze River Delta can help increase the growth rate that benefits the poor and reduce the income gap between regions.And the promotion of common prosperity through cross-provincial integration is mainly achieved by pulling up rural and underdeveloped areas,while its effect on urban and developed areas is relatively weak.The“diffusion effect”rather than the“agglomeration effect”in cross-provincial integration is playing a dominant role.After using the replacement of independent variables,replacement of dependent variables,and instrumental variable tests,the conclusions are still robust.Based on the main conclusions,this paper puts forward targeted policy suggestions.The first is to expand the scope of cross-regional integration to achieve a wider range of common prosperity.The second is to guide the development of capital-saving technological progress and promote the improvement of labor productivity.The third is to encourage factors to migrate to the less developed in the region and boost the diffusion effect of regional integration.