数字基础设施建设对碳排放强度的影响研究

Research on the Impact of Digital Infrastructure Construction on Carbon Emission Intensity

摘要: 基于2011~2022年中国30个省市的面板数据，构建数字基础设施建设指标体系，使用熵值法计算数字基础设施建设水平，运用空间自回归模型，通过实证分析检验了数字基础设施建设对碳排放强度的直接影响，并进一步探究数字基础设施建设对碳排放强度是否存在空间溢出效应。研究结果表明：① 中国区域的碳排放强度存在高度的空间相关性。② 数字基础设施建设对碳排放强度存在显著的负向抑制作用，经过一系列的稳健性检验，该结论依然成立。③ 数字基础设施建设对碳排放强度存在显著的空间溢出效应。

Abstract: Based on panel data from 30 provinces and cities in China from 2011 to 2021, an index system for digital infrastructure construction was constructed. The entropy method was used to calculate the level of digital infrastructure construction, and a time autoregressive model was used. An empirical analysis was used to test the direct impact of digital infrastructure construction on carbon emission intensity, and to further explore whether there is a spatial spillover effect of digital infrastructure construction on carbon emission intensity. The research results show that: ① There is a high degree of spatial correlation in carbon emission intensity in China. ② The construction of digital infrastructure has a significant negative inhibitory effect on carbon emission intensity, and this conclusion remains valid after a series of robustness tests. ③ The construction of digital infrastructure has a significant spatial spillover effect on carbon emission intensity.