关键词: 数字经济；物流业；碳减排；创新效率；产业集聚

Abstract: As the double carbon goal is proposed, the logistics industry is facing the challenges of the times of green, low-carbon environmental protection, and the development of the digital economy, as an emerging economic form, provides good support for the green and low-carbon development of the logistics industry, and the digital economy has become an important driving force for carbon emission reduction in the logistics industry. Based on the provincial data of 30 provinces in China from 2011 to 2020, a benchmark regression model and a moderating effect model are first established to analyze the direct and indirect effects of the digital economy on carbon emissions in the logistics industry. Then, a PVAR model of digital economy, innovation efficiency and carbon emissions in the logistics industry is constructed, and the dynamic impact relationship between the three is deeply explored. Then, the specific role of the digital economy on carbon emissions in the logistics industry is analyzed from different dimensions. The main research conclusions are as follows: the digital economy has an inverted U-shaped impact relationship of first promoting and then suppressing carbon emissions in the logistics industry; from the PVAR model regression results, the improvement of the digital economy level can significantly promote the improvement of innovation efficiency, and the improvement of innovation efficiency will significantly promote the carbon emission reduction of the logistics industry, but the development of the digital economy will increase the carbon emissions of the logistics industry, in addition, the digital economy, innovation efficiency and the carbon emissions of the logistics industry have self-promoting effects; the mechanism of the impact of the digital economy on the carbon emissions of the logistics industry is the regulating effect, and under the high level of logistics industry agglomeration, the development of the digital economy will significantly inhibit the carbon emissions of the logistics industry, and vice versa, it will increase the carbon emissions of the logistics industry; by decomposing the role of the digital economy, it is found that digital infrastructure construction and industrial digitalization can significantly promote carbon emission reduction in the logistics industry, while digital industrialization has not been significantly verified in this study; there is obvious regional heterogeneity in the impact of the digital economy on carbon emission reduction in the logistics industry, and the role of the digital economy in promoting carbon emission reduction in the logistics industry is more significant in the eastern region, followed by the western region, while the inhibitory effect in the central region is not obvious.

Key words: digital economy; logistics industry; carbon reduction; innovation efficiency; industrial agglomeration