智慧城市建设的产业结构升级效应及作用机制研究

在理论阐释智慧城市建设对产业结构升级作用机制的基础上，基于2009-2018年中国内地110个地级市面板数据，采用双重差分模型，实证研究智慧城市建设的产业结构升级效应及作用机制，并采用双重差分倾向得分匹配（PSM-DID）方法开展进一步检验。研究结果表明，智慧城市建设能够促进城市产业结构升级，并通过信息与通信技术的应用效应、可持续发展建设的倒逼作用、科技创新的促进作用3个渠道推动产业结构合理化和高级化发展，进而促进产业结构升级；中等规模的智慧城市建设更有利于促进产业结构合理化，大规模的智慧城市建设更有利于促进产业结构高级化；财政支出和信息基础设施建设水平较高的城市能够显著增强智慧城市建设对产业结构升级的促进作用；人力资本水平和金融发展程度较高的城市建设智慧城市则更有利于促进产业结构高级化；相对于东部发达地区而言，中西部欠发达地区智慧城市建设对产业结构升级的促进效果更突出。

Research on the Effect and Mechanism of Smart City Construction on Industrial Structure Upgrading

Based on the theoretical explanation of the mechanism of smart city construction on industrial structure upgrading and the panel data of 110 cities in China from 2009 to 2017, the difference in difference model is used to empirically study the effect and mechanism of smart city construction on industrial structure upgrading. The empirical results show that the construction of smart city can promote the upgrading of urban industrial structure. Medium-sized smart cities are more conducive to promoting the rationalization of industrial structure, and large-scale smart cities are more conducive to promoting the advancement of industrial structure; cities with high levels of fiscal expenditure and information infrastructure construction can significantly enhance the promotion of smart city construction to the upgrading of industrial structure; cities with higher levels of human capital and financial development are more conducive to promoting the advancement of industrial structure; compared with the developed regions in the east, the smart city construction in the less developed regions in the central and western regions has more prominent effects on the promotion of industrial structure upgrading.