The booming of the digital technology and the digital economy has created a new engine for car-bon emission reduction.As a practical carrier of emerging technologies such as big data,artificial intelligence,and 5G,digital infrastructure has profound significance for the achievement of carbon peaking and carbon neu-trality.With the panel data from 283 cities for demonstration of the"Broadband China"initiative from 2009 to 2019,a multi-period difference-in-differences(DiD)model and a spatial DiD model are established to exam-ine the impact of digital infrastructure construction on carbon productivity and the spatial spillover effects.The results showcase that digital infrastructure construction improves urban carbon productivity and has a positive spatial spillover effect.Specifically,digital infrastructure construction promotes the progress in green technol-ogy,the optimization of industrial structure,and the improvement of energy efficiency by boosting urban inno-vation,thereby improving carbon productivity.The promoting effect of digital infrastructure construction on carbon productivity is more significant in the cities that are not in the Yangtze River Economic Belt,non-resource-based cities,and large cities.According to the results,this paper put forward the following sugges-tions:accelerating the digital infrastructure construction and implementing the Digital China initiative;releas-ing momentum for green innovation and strengthening spatial spillover effects;establishing a collaborative gov-ernance mechanism to promote the coordinated development of the digital economy.
关键词
数字基础设施建设/"宽带中国"/碳生产率
Key words
Digital Infrastructure Construction/"Broadband China"/Carbon Productivity
万方数据