数字经济、技术创新与碳排放强度

Digital economy,technological innovation and carbon intensity

在“双碳”目标和“数字中国”战略下,深入分析数字经济与碳排放强度之间的关系意义重大。本文使用2013—2019年中国30个省(区)的统计数据,实证分析数字经济对碳排放强度的影响及作用机制,并利用空间杜宾模型,检验了数字经济可能存在的空间溢出效应。研究发现:(1)数字经济显著抑制了碳排放强度,稳健性检验和内生性分析均支持上述结论。(2)机制分析发现,数字经济可以提高技术创新水平,进而降低碳排放强度。(3)空间计量分析发现,数字经济对碳排放强度的影响存在空间溢出效应,数字经济水平越高,相邻地区的碳排放强度越低。

Under the carbon peaking and carbon neutrality goals and digital China strategy,it is significant to analyze the relationship between digital economy and carbon emission intensity.This paper empirically analyzes the impact and mecha-nism of the digital economy on carbon emission intensity using statistical data from 30 provinces(regions)in China from 2013 to 2019,and examines the possible spatial spillover effects of the digital economy using the spatial Durbin model.It is found that(1)the digital economy significantly inhibits carbon emission intensity,and both robustness test and endogeneity analysis support the above conclusion.(2)The mechanism analysis shows that digital economy can improve technological in-novation,which in turn reduces carbon emission intensity.(3)Spatial econometric model analysis shows that there is a spa-tial spillover effect of the digital economy on carbon emission intensity,and the higher the level of digital economy,the low-er the carbon emission intensity of neighboring areas.