产业数字化与完全碳排放强度——基于WIOD跨国面板的实证分析

现有研究多侧重于分析数字经济对区域碳排放总量、强度和效率的影响，鲜有文献探究产业数字化对其完全碳排放强度的影响。为弥补现有研究不足并丰富相关研究，本文基于WIOD、WDI跨国面板数据实证分析产业数字化与其完全碳排放强度之间的因果关系。研究发现，①产业数字化能降低其完全碳排放强度。该结论在替换解释和被解释变量、增加控制变量以及考虑内生性等稳健性检验后依然成立。②产业数字化通过减少中间投入进而降低了完全碳排放总量和强度，促进了产业增长与碳排放的脱钩。③数字化能降低整体农业，种植业和畜牧业，林业，制造业，整体交通运输业，陆路和管道运输，空运，仓储和运输支持活动，邮政和信使活动以及采矿业，北美和欧洲国家，发达经济体的完全碳排放强度。但对渔业，水运，水业、建筑业、住宿和餐饮业，东亚国家和不发达经济体的行业完全碳排放强度没有显著影响。同时，在高数字化行业中，数字化对其完全碳排放强度具有显著的抑制作用。

Industrial Digitalization and Complete Carbon Emission Intensity: An Empirical Analysis Based on WIOD Cross Border Panel

Existing research primarily focuses on analyzing the impact of the digital economy on the total, intensity, and efficiency of regional carbon emissions, with limited literature exploring the influence of industrial digitization on its complete carbon emission intensity. In order to address these research gaps and enrich the relevant literature, this study empirically examines the causal relationship between industrial digitization and its complete carbon emission intensity based on WIOD and WDI cross-border panel data. The findings of this research are as follows: Firstly, industrial digitization can actively reduce its complete carbon emission intensity. This conclusion remains valid after conducting robustness tests, such as substituting explanatory and dependent variables, incorporating control variables, and considering endogeneity. Secondly, industrial digitization reduces both the total and intensity of complete carbon emissions by reducing intermediate investments, promoting the decoupling of industrial growth and carbon emissions. Thirdly, digitization can decrease the complete carbon emission intensity in various sectors, including agriculture, crop and animal husbandry, forestry, manufacturing, transportation (including land, pipeline, and air transportation), warehousing and transportation support activities, postal and courier activities, as well as mining, in North American and European countries, and developed economies. However, there is no significant impact on the complete carbon emission intensity in industries such as fisheries, water transportation, the water industry, construction industry, and the accommodation and catering industry in East Asian countries and underdeveloped economies. Additionally, digitalization has a significant inhibitory effect on the intensity of complete carbon emissions in highly digital industries.