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ファイル | 記述 | サイズ | フォーマット | |
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j.ecolecon.2015.08.010.pdf | 1.09 MB | Adobe PDF | 見る/開く |
タイトル: | Trends in Japanese households' critical-metals material footprints |
著者: | Shigetomi, Yosuke Nansai, Keisuke Kagawa, Shigemi Tohno, Susumu |
著者名の別形: | 重富, 陽介 |
キーワード: | Household consumption Material footprint Critical metal Low carbon technology Multiregional input–output analysis |
発行日: | Nov-2015 |
出版者: | Elsevier B.V. |
誌名: | Ecological Economics |
巻: | 119 |
開始ページ: | 118 |
終了ページ: | 126 |
抄録: | This study adopts the concept of material footprint (MF), an indicator for consumption-based material extraction via international trade, and identifies the relationship between the MFs of critical metals for low-carbon technologies – neodymium, cobalt, and platinum – and Japanese household consumption through a multiregional input–output approach using the global link input–output model. We focus solely on the impact of changes in consumption patterns caused by demographic change on the structures of the MFs from 2005 to 2035. As a result, the total MFs of neodymium, cobalt, and platinum in 2035 are estimated to be 11%, 6.6% and 4.7% lower than in 2005, respectively. In terms of commodity sectors, the MFs of the three metals induced by “passenger motor cars” are estimated to decrease most between 2005 and 2035. Finally, we carried out an assessment of the extent to which the products dealt with under current Japanese recycling laws cover the MFs calculated for 2035. This indicates that continued enforcement of the recycling laws can play an important role in alerting consumers to the MFs of critical metals, particularly neodymium. For improving the accuracy of the above estimates, further studies need to incorporate other future trends like technologies and trade. |
著作権等: | © 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license(http://creativecommons.org/licenses/by-nc-nd/4.0/). |
URI: | http://hdl.handle.net/2433/202065 |
DOI(出版社版): | 10.1016/j.ecolecon.2015.08.010 |
出現コレクション: | 学術雑誌掲載論文等 |
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