School of International Trade, Shanxi University of Finance and Economics, Taiyuan 030006, China.
School of Economics and Management, South China Normal University, Guangzhou 510006, China.
Int J Environ Res Public Health. 2023 Feb 19;20(4):3680. doi: 10.3390/ijerph20043680.
The impact of the digital economy is increasing, and its environmental effect has attracted more and more attention. The digital economy promotes the improvement of production efficiency and the government's environmental governance capacity, and contributes to the reduction of urban carbon emission intensity. In order to study the impact of digital economy development on urban carbon emission intensity, this paper analyzes the theoretical basis of the digital economy on the reduction of carbon emission intensity, and then, based on the panel data of cities from 2011 to 2019, uses the two-way fixed effect model for empirical testing. The regression results show that the development of the digital economy has promoted the reduction of carbon emission intensity of cities, promoted the green transformation and upgrading of cities, and lays a foundation for China to achieve carbon peaking and carbon neutralization through the improvement of human capital investment and green innovation level. The basic conclusion is robust by changing core explanatory variables, changing samples, replacing regression methods, and shrinking and truncating tests. The impact of the digital economy on urban carbon emission intensity varies with the location, grade and size of the city. Specifically, the development of the digital economy in cities in the eastern and central regions, cities at or above the sub provincial level, large cities and non-resource-based cities has promoted the reduction of urban carbon emission intensity. In terms of resource-based cities, the development of the digital economy in renewable resource-based cities and resource-based cities dominated by iron ore and oil mining has promoted the decline in urban carbon emission reduction intensity.
数字经济的影响正在增加，其环境效应也越来越受到关注。数字经济促进了生产效率的提高和政府的环境治理能力，有助于降低城市的碳排放量强度。为了研究数字经济发展对城市碳排放量强度的影响，本文分析了数字经济对降低碳排放量强度的理论基础，然后基于 2011 年至 2019 年的城市面板数据，使用双向固定效应模型进行实证检验。回归结果表明，数字经济的发展促进了城市碳排放量强度的降低，促进了城市的绿色转型升级，通过提高人力资本投资和绿色创新水平，为中国实现碳峰值和碳中和奠定了基础。通过改变核心解释变量、改变样本、替换回归方法以及缩尾和截断检验，基本结论是稳健的。数字经济对城市碳排放量强度的影响因城市的地理位置、等级和规模而异。具体来说，数字经济在东部和中部地区城市、省级及以上城市、大城市和非资源型城市的发展促进了城市碳排放量强度的降低。在资源型城市方面，数字经济在可再生资源型城市和以铁矿石和石油开采为主的资源型城市的发展促进了城市碳减排强度的下降。
