数字基础设施对城市经济韧性的影响研究
A Study on the Impact of Digital Infrastructure on the Economic Resilience of Cities

作为数字经济蓬勃发展的基石与驱动力，数字基础设施在增强城市经济韧性方面扮演着愈发重要的角色。本研究利用2008~2022年中国271个城市的面板数据，使用双固定效应模型、中介效应模型以及空间杜宾模型，考察了数字基础设施对城市经济韧性影响。实证结果表明，数字基础设施不仅直接对城市经济韧性产生显著正向影响，还通过激发创新创业活跃度，为城市经济韧性注入新动能。此外，空间效应分析进一步表明，数字基础设施对城市经济韧性的积极影响具有跨越地理界限的正向溢出效应。异质性分析则发现，相较于中西部及中小城市，东部地区和大型城市在数字基础设施建设对经济韧性的赋能效应上表现更为突出。本研究结果为充分发挥数字基础设施的潜力，推动城市经济韧性的全面提升提供了坚实的理论支撑与实践参考。
As the cornerstone and driving force for the vigorous development of the digital economy, digital infrastructure is playing an increasingly important role in enhancing the resilience of urban economies. Using panel data from 271 cities in China from 2008 to 2022, this study examines the impact of digital infrastructure on urban economic resilience using a double fixed-effect model, a mediator-effect model, and a spatial Durbin model. The empirical results show that digital infrastructure not only directly has a significant positive impact on urban economic resilience, but also injects new momentum into urban economic resilience by stimulating innovation and entrepreneurship activity. In addition, the spatial effect analysis further shows that the positive impact of digital infrastructure on urban economic resilience has a positive spillover effect across geographical boundaries. Heterogeneity analysis shows that compared with the central and western regions and small and medium-sized cities, the eastern region and large cities have more prominent performance in the enabling effect of digital infrastructure construction on economic resilience. The results of this study provide a solid theoretical support and practical reference for giving full play to the potential of digital infrastructure and promoting the overall improvement of urban economic resilience.