中国“双碳”目标背景下数字经济赋能区域绿色发展的碳减排效应研究

The Mechanism and Effect Measurement of Carbon Emission Reduction in Digital Economy under the“Double Carbon”Constraints

数字经济与绿色发展的融合,将为区域经济和社会可持续发展提供新的动力和机遇。为探寻数字经济发展如何赋能区域低碳绿色发展,基于2011-2021年中国30个省(区、市)的面板数据,构建中介效应模型、空间计量模型,实证探究数字经济与区域绿色发展之间的关系。结果表明:(1)数字经济发展显著降低了碳排放强度。在使用解释变量滞后一期、缩短样本期等稳健性检验后,这一结论依然成立。(2)数字经济可以通过绿色工艺创新、产业结构合理化和产业高级化间接赋能区域绿色发展。(3)中国各省份数字经济发展与碳排放水平具有显著的空间自相关性;各省份之间存在着正的空间相关性,存在着空间聚集特征;数字经济发展不仅可以促进本地的碳减排达到区域绿色发展,而且可以通过空间溢出效应赋能区域绿色发展。

The integration of digital economy and green development will provide new impetus and opportunities for sustainable regional economic and social development.In order to explore how the development of digital economy empowers regional low-carbon green development.Based on the panel data of 30 provinces(municipalities directly under the central government and autonomous regions)in China from 2011 to 2021,we constructed the mediation effect model and spatial econometric model to empirically explore the relationship between digital economy and regional green development.The results show that:(1)the development of digital economy significantly reduces carbon emission intensity.This conclusion still holds after using robustness tests such as lagging explanatory variables by one period and shortening the sample period.(2)The digital economy can indirectly empower regional green development through green process innovation,industrial structure rationalization and industrial advancement.(3)There is a significant spatial autocorrelation between the development of digital economy and carbon emission level in Chinese provinces;there is a positive spatial correlation between provinces and spatial aggregation;the development of digital economy can not only promote local carbon emission reduction to achieve regional green development,but also empower regional green development through spatial spillover effects.