抄録
The global warming due to the increase of greenhouse gases such as carbon dioxide, i. e., CO2, is the most serious and important issue in the global environmental problems. In this paper, a simple analysis is indicated in order to estimate the reduction of CO2 based on modal shift of freight transportation from motor trucks to merchant shipping or railroads with a view to protect global warming by using several statistical data on CO2 discharge in Japan. The analytical result shows that the modal shift plan proposed by the present paper is very effective for the reduction of CO2 in comparison with a few another countermeasures and it makes a great contribution for the goal of CO2 reduction following Kyoto Protocol to the United Nations Framework.
