Environ Sci Pollut Res Int 2021 Jun 14. Epub 2021 Jun 14.
School of Transportation and Logistics, Southwest Jiaotong University, Room 2611, No. 2 Teaching Building, No. 999 Xi'an Road, Chengdu, 610031, Sichuan, China.
In recent years, considering the railway and waterway are cleaner ways of freight transportation, the Chinese government has vigorously promoted the adjustment of the transportation structure of the freight industry to reduce carbon emissions. However, with such a macroscopic objective, it remains a crucial problem for the policy-maker to further determine: how to estimate the optimal value of the share of freight volume among roadway, railway, and waterway regionally? To this end, this paper first quantified and analyzed the economic benefits, carbon emission intensity, and input-output efficiency of different transportation modes in each province. Then, with the goal of maximizing the efficiency of the freight transportation system, considering the carbon emission intensity reduction constraint and the economic output non-reduction constraint, an optimization model is constructed to obtain the freight structure adjustment plan in each province. Read More