Effects of Carbon Emission Reduction from Freight Structure Adjustment at Provincial Level in China
The freight sector is one of the most challenging sectors in supporting China's goal of achieving"carbon peak and carbon neutrality",and the adjustment of freight structure is a key means to achieve CO2 emission reduction in freight transportation.However,there is an urgent need for in-depth quantitative research from both management and academia to assess the CO2 emission reduction effects of freight structure adjustment,especially considering the spatial connection of freight CO2 emissions between regions.To address these issues,this study employs a"top-down"approach to estimate freight CO2 emissions for 30 provinces in China from 1999 to 2019.It also develops a spatial econometric model that incorporates social-economic variables and freight characteristics to quantify the impact of freight structure and other factors on CO2 emissions from freight transportation.The findings reveal that the average annual growth rate of freight CO2 emissions in most Chinese provinces exceeds 10%,although the growth rate is decelerating.Coastal provinces,such as Shandong,Guangdong,Shanghai,Liaoning,and Jiangsu exhibit the highest freight CO2 emissions,with provinces within the same geographical region displaying similar changes.Given the overall effects of rail and water freight transportation on CO2 emissions from freight transportation are-0.193 and 2.378,respectively,prioritizing the transition from"road-to-rail"should be a focal point in most provinces,while the shift from"road-to-water"should be approached cautiously to effectively achieve CO2 emission reduction in freight transportation.
transportation economycarbon reduction contributionspatial econometric modelfreight structuretemporal and spatial distribution