School of Medical Humanities and Management, Hunan University of Medicine, Huaihua, Hunan, China.
School of Economics and Trade, Hunan University, Changsha, Hunan, China.
PLoS One. 2024 Feb 12;19(2):e0288294. doi: 10.1371/journal.pone.0288294. eCollection 2024.
This paper methodically investigates the influence of inclusive income growth on city size, examining it through the dual lenses of "income" and "distribution." The analysis leverages meticulously collected panel data encompassing 276 Chinese cities at the prefecture level and above, spanning the period from 2005 to 2019. Theoretical analysis indicates that the effect of city size expansion on per capita income adheres to a 'U'-shaped trajectory, while its influence on the urban-rural income gap manifests an 'inverted U' pattern. Moreover, the inclusive income growth stemming from city size demonstrates notable heterogeneity across various geographic locations and city hierarchies. The findings reveal that human capital serves as the primary mechanism through which city size influences inclusive income growth. After decomposing the income inclusiveness index, it becomes evident that the expansion of city size exerts a more potent direct driving effect on the income of urban residents. On the one hand, city size expansion directly increases rural residents' income levels by improving labor productivity. On the other hand, it facilitates leapfrog income development by inducing the rural labor force to move to cities.
本文系统地考察了包容性收入增长对城市规模的影响，从“收入”和“分配”两个角度进行了研究。该分析利用了精心收集的涵盖 2005 年至 2019 年期间中国 276 个地级及以上城市的面板数据。理论分析表明，城市规模扩张对人均收入的影响呈“U”型轨迹，而对城乡收入差距的影响则呈现出“倒 U”型模式。此外，城市规模带来的包容性收入增长在不同地理位置和城市层级上表现出显著的异质性。研究结果表明，人力资本是城市规模影响包容性收入增长的主要机制。在对收入包容性指数进行分解后，城市规模的扩大对城市居民收入的增长具有更强的直接驱动效应。一方面，城市规模的扩大通过提高劳动生产率直接增加了农村居民的收入水平。另一方面，通过促使农村劳动力向城市转移，促进了农村劳动力的跨越式发展。
