Inter-sectoral transmission mechanism of greenhouse gas emissions driven by catering consumption in China
Based on the environmental input-output model,structural path analysis,and betweenness centrality method,the inter-sectoral transmission mechanism(including key supply chain paths and critical transmission sectors)of greenhouse gas(GHG)emissions driven by catering consumption in China was uncovered.The results showed that(1)the GHG footprint of China's catering consumption increased with fluctuations during 2002～2020.The top two supply chain paths with the largest contributions to the GHG footprint of China's catering consumption were"animal husbandry → slaughtering and meat processing → catering →urban consumption",and"animal husbandry → catering → urban consumption".Most of the critical supply chain paths started in the three sectors including cultivation,animal husbandry,and electricity and heat production.The key supply chain paths and related starting sectors were the hotspots of policy decisions on catering industry's low-carbon development.(2)The top three critical transmission sectors for catering industry's GHG footprint were slaughtering and meat processing,cereal processing,and vegetable oil processing.In 2020,they transmitted 12.2,8.0,and 7.0Mt CO2-eq of embodied GHG emissions along the catering industry's supply chains,respectively.More attention should be paid to the productivity improvement in these sectors to reduce the catering industry's GHG footprint.(3)The transmission roles of cereal processing,and electricity and heat production gradually increased during 2002～2020.
万方数据
维普
