数字经济对农业碳排放的影响及作用机制研究

The Influence and Mechanism of Digital Economy on Agricultural Carbon Emission

基于全国30个省份2013—2022年的面板数据,探究了数字经济对农业碳排放的影响及作用机制。研究发现:第一,数字经济对农业碳排放具有显著的抑制作用,数字经济发展水平每提高1%,农业碳排放量便会下降0.595%。第二,数字经济发展会促进地区经济发展水平提升与农机技术进步,进而促进农业碳减排,其中介作用份额占比分别为12.9%和45.1%。第三,财政支农水平的提高会影响数字经济在农业领域的渗透速度,进而扩大数字经济对农业碳排放的抑制作用。第四,农村人力资本水平对农业碳减排存在单一门槛,不同农村人力资本水平下数字经济对农业碳排放的抑制作用存在差异。第五,数字经济对农业碳排放的影响存在区域与地形异质性,具体而言,在粮食主产区和产销平衡区数字经济表现出了显著的抑制作用,而在粮食主销区不甚明显;在陡峭地区数字经济的减碳效应相较于平缓地区更强。

This paper explores the impact and mechanism of digital economy on agricultural carbon emission based on the panel data of 30 provinces from 2013 to 2022.According to research findings.First,the digital economy has a significant inhibiting effect on agricultural carbon emissions,and for every 1%increase in the level of digital economic development,agricultural carbon emissions will decrease by 0.595%.Second,the development of digital economy will make the level of regional economic development and agricultural machinery technology progress,and then promote the agricultural carbon emission reduction,and its intermediary role share of 12.9%and 45.1%respectively.Third,the increase in the level of financial support for agriculture will affect the penetration rate of the digital economy in the agricultural sector,which will expand the inhibition of the digital economy on agricultural carbon emissions.Fourth,there is a single threshold of rural human capital level on agricultural carbon emission reduction,and there are differences in the inhibitory effect of digital economy on agricultural carbon emission under different levels of rural human capital.Fifth,there is regional and topographical heterogeneity in the impact of the digital economy on agricultural carbon emissions,specifically,the digital economy in the main grain production area and the balance of production and marketing area show a significant inhibitory effect,while the main grain marketing area is less obvious;the carbon reduction effect of the digital economy in steep areas is stronger compared to that in gentle areas.