A Study on GHG Reduction of the International Marine Transportation in Consideration of the Supply Chain

2007年国际海运的二氧化碳排放量为8.5亿吨，与德国、英国等一国的先进国家一样，这是一个巨大的排放量。为了检验这一减排计划，本文建立了整个供应链的二氧化碳排放量模型。并利用该模型讨论了船舶扩容、减速等方案的减速效果。作为审查结果，海洋二氧化碳减排计划明确显示，陆路运输等受到影响。也就是说，事实证明，供应链上的排放量会根据计划的条件而增加。

The carbon dioxide emitted from international marinetransportation is 850 million tons (2007), and this quantity is huge emission like aone-country advanced nation, such as Germany and the U.K. In this study, in order toexamine the plan for reducing this emission, the model which grasps the carbon-dioxideemissions in the whole supply chain was built. And the reduction effect of plans, such as anenlargement and a slowdown of a vessel, was discussed using this model. As results ofexamination, the plan for reduction of marine carbon dioxide emission showed clearly thatland transportation etc. are affected. That is, it turned out that the emission on a supplychain increases depending on conditions of the plan.