数字基础设施建设对新型城镇化高质量发展的影响研究——来自“宽带中国”试点政策的经验证据

Impact Study of Digital Infrastructure Construction on the High-Quality Development of New Urbanization:Empirical Evidence Based on“Broadband China”

作为现代经济体系空间网络的“技术支柱”和“数据枢纽”,数字基础设施建设对于构建数字网络强国、促进城镇高质量发展具有重要意义。基于新发展理念构建城镇化高质量发展指标体系,并在理论分析数字基础设施建设影响新型城镇化高质量发展内在机理的基础上,基于2014-2016年实施的“宽带中国”试点政策,运用准自然实验方法构建多时点双重差分模型,系统研究数字基础设施建设对城镇高质量发展的影响。研究发现:以“宽带中国”试点政策为代表的数字基础设施建设显著促进新型城镇化高质量发展,且这一政策效应在东部和西部的城市中表现更为明显。机制研究表明,数字基础设施建设通过促进城镇居民消费升级对城镇高质量发展产生影响。研究结论为充分发挥“宽带中国”试点政策的数字化引领作用,促进城镇高质量发展提供了政策启示。

Serving as the“technological backbone”and“data hub”of the modern economic spatial network,digital infrastructure construction holds significant importance in building a digital powerhouse and promoting the high-quality development of urban areas.Based on the new development philosophy,this research constructs an indicator system for high-quality urban development and,through theoretical analysis of the intrinsic mechanisms through which digital infrastructure construction influences the high-quality development of new urbanization,utilizes the“Broadband China”pilot policy established between 2014 and 2016 as a quasi-natural experiment to build a multi-time-point difference-in-differences model.The study systematically investigates the impact of digital infrastructure construction on the high-quality development of urban areas.Findings reveal that digital infrastructure construction,represented by the“Broadband China”pilot policy,significantly promotes high-quality urban development,with a more pronounced policy effect observed in cities located in the eastern and western regions.Mechanism studies indicate that digital infrastructure construction affects high-quality urban development by fostering the upgrading of urban residents'consumption.The research conclusions provide policy insights for leveraging the digital leadership role of the“Broadband China”pilot policy to further promote high-quality urban development.