数字基础设施对城市经济韧性的影响研究——基于中国278个地级市的经验证据

Research on the Impact of Digital Infrastructure on Urban Economic Resilience——Evidence from 278 Prefecture-level Cities in China

基于中国278个地级市2009—2021年面板数据,通过线性回归估计、敏感性指标法测度各地级市经济韧性,并实证检验了数字基础设施提升城市经济韧性的作用机制。研究发现,数字基础设施建设显著提升了城市经济韧性,在使用IV-2SLS、剔除特殊年份样本等一系列稳健性检验后该结论仍然成立。机制分析发现,数字基础设施能通过提升市场潜力、产业结构升级以及高技能人才集聚等方式间接提升城市经济韧性。异质性分析表明,数字基础设施对内陆城市、经济发展水平较低以及常住人口规模较大的城市经济韧性提升作用更为显著。应充分利用数字基础设施建设培育经济增长新动能,通过释放国内市场潜力和产业升级等途径提升城市经济韧性水平。

Based on the panel data of 278 prefecture-level cities in China from 2009 to 2021,the economic resilience of prefecture-level cities was measured by linear regression estimation and sensitivity index method,and the mechanism of digital infrastructure to improve the urban economic resilience was empirically tested.The study found that the digital infrastructure construction has significantly improved the urban economic resilience,and the conclusion is still true after a series of robustness tests such as using IV-2SLS and excluding samples from special years.Mechanism analysis shows that digital infrastructure can indirectly enhance the resilience of urban economy by enhancing market potential,upgrading industrial structure and gathering of highly skilled personnel.Heterogeneity analysis shows that digital infrastructure plays a more significant role in improving the economic resilience of inland cities,cities with low level of economic development and large permanent resident population.Therefore,it is necessary to make full use of digital infrastructure to foster new drivers of economic growth,and to improve the urban economic resilience by releasing the potential of the domestic market and industrial upgrading.