数字基础设施建设对城市绿色创新效率的影响——基于“宽带中国”战略试点政策的准自然实验被引量：4

The Impact of Digital Infrastructure Construction on the Efficiency of Urban Green Innovation-A Quasi Natural Experiment Based on the“Broadband China”Strategy Pilot

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摘要本文基于我国280个地级及以上城市2006~2021年的面板数据,利用多期双重差分模型考察“宽带中国”战略试点政策实施对城市绿色创新效率的影响效应、内在机制及异质性表现。研究发现:(1)“宽带中国”战略试点政策实施对城市绿色创新效率具有显著的提升作用,并且在一系列稳健性检验后结果依然稳健;(2)劳动力流动和生产性服务业集聚是“宽带中国”战略试点政策实施提高城市绿色创新效率的两种机制;(3)“宽带中国”战略试点政策实施对城市绿色创新效率的促进作用在东部城市、大规模城市、非资源型城市中更强;(4)正式环境规制和非正式环境规制正向调节“宽带中国”战略试点政策实施对城市绿色创新效率的驱动作用。本文为推动数字基础设施建设以及城市绿色创新效率的提升提供了重要政策启示。 Based on panel data of 280 prefecture-level cities in China from 2006 to 2021,this paper employs a multi-period difference-in-differences model to examine the impact,underlying mechanisms,and heterogeneity of the“Broadband China”pi⁃lot policy on urban green innovation efficiency.The research reveals:(1)the implementation of the“Broadband China”pilot policy significantly enhances urban green innovation efficiency,and the results remain robust after a series of robustness checks.(2)Labor mobility and the agglomeration of productive service industries are two mechanisms through which the“Broadband Chi⁃na”pilot policy improves urban green innovation efficiency.(3)The promotion effect of the“Broadband China”pilot policy on urban green innovation efficiency is stronger in eastern cities,large-scale cities,and non-resource-based cities.(4)Formal and informal environmental regulations positively moderate the driving effect of the“Broadband China”pilot policy on urban green inno⁃vation efficiency.This study provides important policy implications for advancing the construction of information highways and impro⁃ving urban green innovation efficiency in the era of the digital economy.

作者刘军王励铧 Liu Jun;Wang Lihua(International Trade College,Shanxi University of Finance and Economics,Taiyuan 030006,China;Research Institute for Resource Based Economic Transformation and Development,Shanxi University of Finance and Economics,Taiyuan 030006,China)

机构地区山西财经大学国际贸易学院山西财经大学资源型经济转型发展研究院

出处《工业技术经济》 CSSCI 北大核心 2024年第2期152-160,共9页 Journal of Industrial Technological Economics

基金 2023年度山西财经大学重点项目“山西融入‘一带一路’高质量发展研究”(项目编号:201312)。

关键词数字基础设施建设 “宽带中国” 城市绿色创新效率环境规制劳动力流动生产性服务业集聚 digital infrastructure construction Broadband China urban green innovation efficiency environmental regula-tions labor mobility agglomeration of productive service industry

分类号 F623 [经济管理—产业经济] F49