Estimation of Greenhouse Gas Emission Factors Using 1995 Japanese Economic Input-Output Table.
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概要
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This study addresses the development of environmental database using Japanese input-output (I-O) tables for Life Cycle Inventory analysis (LCI). Many LCI case studies have been performed using Japanese I-O tables. However, most of these studies have focused only on CO<SUB>2</SUB> emissions due to lack of high quality data concerning other substances that influence the environment. The objective of this study is to supply CO<SUB>2</SUB> and CH<SUB>4</SUB> emission factors of commodities estimated using the latest Japanese input-output table (1995). In general, emission factors are estimated using Japanese I-O table based on the assumption that all commodities are produced in Japan. In this paper, however, a method that permits to reflect the actual activities at the overseas production of import goods is used. The results show, (1) CH<SUB>4</SUB> is not negligible when performing Life Cycle Assessment (LCA) from viewpoint of global warming, and (2) CO<SUB>2</SUB> and CH<SUB>4</SUB> emission factors estimated using the conventional method are very different from those using the method proposed in this paper because of the difference of technologies used in Japan and abroad.
- 一般社団法人 日本エネルギー学会の論文
一般社団法人 日本エネルギー学会 | 論文
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