Yang Weixin, Gao Hao, Yang Yunpeng, Liao Jiacheng
Business School, University of Shanghai for Science and Technology, Shanghai 200093, China.
Antai College of Economics and Management, Shanghai Jiao Tong University, Shanghai 200030, China.
Int J Environ Res Public Health. 2022 Mar 24;19(7):3894. doi: 10.3390/ijerph19073894.
With the rapid growth of China's export trade and increasing pressure of domestic carbon emission reduction, the issue of carbon embodied in export trade has attracted increasing attention from academic circles. This paper has constructed a calculation model for embodied carbon in China's export trade by using the multi-region input-output model and the international input-output data from the World Input-Output Database (WIOD) database in order to calculate the amount of embodied carbon. Our objective is to analyze the main source industry and specific sectors of embodied carbon in China's export trade, and to provide a quantitative basis for emission reduction under the "carbon neutrality" strategy. The findings reveal that the embodied carbon in China's export trade mainly comes from the secondary industry, which accounts for more than 90% of the total embodied carbon in export trade, while the proportions of embodied carbon in the primary industry and the tertiary industry are relatively low, about 1% and 5-7%, respectively. In terms of specific sectors, the crop and animal production and hunting sectors have the largest share (over 60%) of embodied carbon in the export trade of the primary industry; in the export trade of the secondary industry, the main sources of embodied carbon are the manufacturing sector and the power, gas, steam and air-conditioning supply sectors, respectively accounting for around 50% and 45% of the total embodied carbon in the export trade of the secondary industry; as for the tertiary industry, the transport and storage sectors have the largest share of embodied carbon in the export trade, which is around 70%. Based on the above research results, this paper has provided relevant policy recommendations, which are optimizing the export structure, improving the energy consumption structure and the carbon emissions trading system.
随着中国出口贸易的快速增长以及国内碳排放减排压力的增大，出口贸易中的隐含碳问题日益受到学术界的关注。本文运用多区域投入产出模型和世界投入产出数据库（WIOD）中的国际投入产出数据，构建了中国出口贸易隐含碳的计算模型，以计算隐含碳的数量。我们的目标是分析中国出口贸易隐含碳的主要来源行业和具体部门，并为“碳中和”战略下的减排提供定量依据。研究结果表明，中国出口贸易中的隐含碳主要来自第二产业，占出口贸易隐含碳总量的90%以上，而第一产业和第三产业的隐含碳占比相对较低，分别约为1%和5 - 7%。在具体部门方面，第一产业出口贸易中，作物和动物生产及狩猎部门的隐含碳占比最大（超过60%）；第二产业出口贸易中，隐含碳的主要来源分别是制造业和电力、燃气、蒸汽及空调供应部门，分别占第二产业出口贸易隐含碳总量的约50%和45%；至于第三产业，运输和仓储部门在出口贸易中的隐含碳占比最大，约为70%。基于上述研究结果，本文提出了相关政策建议，即优化出口结构、改善能源消费结构和碳排放交易体系。
