河海大学学报（哲学社会科学版）2025，Vol.27Issue(2)：133-146,14.DOI:10.3876/j.issn.1671-4970.2025.02.013
数字基础设施建设赋能新质生产力提升
How Does Digital Infrastructure Construction Empower the Enhancement of New Quality Productive Forces——Empirical Evidence of a Quasi-Natural Experiment
摘要
Abstract
Digital infrastructure construction is an important driver for the transformation and upgrading of traditional productive forces,so it is of great significance to clarify how it enables the improvement of new quality productive forces.Based on panel data from 277 prefecture-level cities in China from 2011 to 2022,this paper establishes a scientifically validated metric for new quality productive forces.Leveraging the phased implementation of the"Broadband China"pilot policies initiated in 2014 as a"quasi-natural experiment",it employs a multi-period difference-in-differences(DID)design to estimate the benchmark impact,heterogeneity impact,mechanism,and spatial spillover effects of digital infrastructure construction on new quality productive forces.The results show that digital infrastructure construction has significantly improved the level of new quality productive forces,and this conclusion is verified in the treatment of endogeneity problems and various robustness tests.Compared with central and western cities and smaller cities,the positive effect of digital infrastructure construction on new quality productive cities is more significant in eastern cities and larger cities.Economic agglomeration and industrial upgrading are important mechanisms for the impact of digital infrastructure construction on new quality productive forces,that is,digital infrastructure construction can promote economic agglomeration and industrial upgrading,and then enhance new quality productive forces.Digital infrastructure construction exhibits pronounced spatial spillover effects,with initiatives in pilot cities enhancing new quality productive forces in geographically adjacent or economically similar neighboring areas.关键词
数字基础设施建设/宽带中国/新质生产力/多期DID/空间溢出效应Key words
digital infrastructure construction/Broadband China/new quality productive forces/multi-period DID/spatial spillover effects引用本文复制引用
李晓龙,朱子诺..数字基础设施建设赋能新质生产力提升[J].河海大学学报（哲学社会科学版）,2025,27(2):133-146,14.基金项目
贵州省哲学社会科学规划课题(24GZYB84) （24GZYB84）
