城市群集聚空间外部性如何影响城市规模工资溢价?

How Does the Agglomeration Externalities of City Cluster Affect the City Size Wage Premium?

本文利用2013年CHIP数据,发现城市群集聚能够促进城市规模工资溢价上升,这缘于城市群集聚对不同规模城市的工资存在异质性作用,即城市群集聚能够提高大城市工资,但会对小城市工资产生负面影响。在克服劳动力空间自选择、遗漏变量等内生性问题以及一系列稳健性检验后,所得结论依然成立。机制检验发现,城市群集聚通过强化大城市对高技能劳动力的虹吸效应提升大城市工资,并通过加速小城市高技能劳动力流失对小城市工资产生负向作用。

Using data from the 2013 China Household Income Project,we find that city clusters can raise the city size wage premium,which is caused by the heterogeneous impacts of city clusters on the wages of cities of different sizes.Specifically,City clusters can increase the wages of large cities,while having a negative impact on the wages of small cities.This result survives after overcoming endogeneity and a vast array of robustness tests.We also find that multicity agglomerations raise(lower)the wages of large(small)cities by promoting the inflow(outflow)of high-skilled workers.