Comprehensive analysis of the measures to tackle the global warming by the Japanese government from the perspectives of the cost efficiency

从政策制定过程、分配方式、成本效益和对实现《京都议定书》目标的影响等方面，对“日本自愿排放交易机制（JVETS）”、“大企业与中小企业之间的信用交易机制”、“京都机制信用获取计划（KMCAP）”、“全国排放交易综合试验市场”和“抵消信用计划（J-VER）”进行了评价和比较。因此，可以说：1)健壮的基础设施的排放交易计划在日本正在建设,2)之间的成本效率的差异信贷从海外收购,从国内温室气体排放减排项目可能不是太大,3)系统设计的国内减排计划将产生重大影响的成就《京都议定书》的目标为日本的大公司和日本作为一个整体,和4)考虑到效益,应支持利用国内排放交易计划等缓解措施，以进一步发展。

"Japan voluntary emission trading scheme (JVETS)", "Credit trading scheme between the large companies and the small/medium companies", "Kyoto mechanism credit acquisition program (KMCAP)" "Experimental Nationally-Integrated Market for Emissions Trading" and "Offset Credit Scheme (J-VER)" were evaluated and compared from the view points of policy formulation process, allocation method, cost-efficiency and impacts on the achievement of the target defined in the Kyoto Protocol. As a result, it can be said that : 1) robust infrastructure for the emission trading scheme is being constructed in Japan, 2) the difference of the cost-efficiency between the credit acquisition from the overseas and that from the domestic GHG emission abatement projects may not be so large, 3) system design of the domestic mitigation scheme will have a big impact on the achievement of the Kyoto target both for the large companies in Japan and for Japan as a whole, and 4) considering the co-benefits, mitigation measures utilizing such as domestic emission trading scheme should be supported for further development.