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Sustainability 2015, 7(9), 11878-11892; doi:10.3390/su70911878

A Practical Approach to Screening Potential Environmental Hotspots of Different Impact Categories in Supply Chains

1,†,* , 1,†
,
1,2,†
and
1,†
1
Department of Urban Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
2
Bank of Tokyo-Mitsubishi UFJ, 5-42-8 Nakakasai, Edogawa-ku, Tokyo 134-8504, Japan
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Marc A. Rosen
Received: 12 June 2015 / Revised: 22 July 2015 / Accepted: 12 August 2015 / Published: 26 August 2015
(This article belongs to the Section Sustainable Use of the Environment and Resources)
View Full-Text   |   Download PDF [1606 KB, uploaded 26 August 2015]   |  

Abstract

Identification of environmental hotspots becomes a pressing issue for companies pursuing sustainable supply chain management. In particular, excessive dependence on water resources outside the country may put the supply chain at unanticipated risk of water shortage. This article presents a practical approach to screening potential environmental hotspots of different impact categories that occur in the supply chain using environmental input-output analysis. First, the amounts of domestic and foreign potential impacts of global warming, terrestrial acidification, and water resource consumption, induced through supply chains were calculated for 403 sectors of Japanese products. Thereafter, with a focus on potential impacts induced through the import of raw materials, a framework for screening foreign potential hotspots was presented. The results showed that the sectoral potential impacts of water resource consumption had high rates of foreign impacts at deeper tiers of the supply chains for some sectors, which indicated that there exist hidden water hotspots outside the country. In the case study of fiber yarns, impacts on water resource consumption induced as a result of the import of crops, as well as that induced in silviculture as a result of the import of wood chips, were found to be the foreign potential hotspots. View Full-Text
Keywords: environmental input-output analysis; life cycle impact assessment; global warming; terrestrial acidification; water resource consumption; characterization factor; imported raw material; fiber yarn environmental input-output analysis; life cycle impact assessment; global warming; terrestrial acidification; water resource consumption; characterization factor; imported raw material; fiber yarn
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Nakatani, J.; Maruyama, T.; Fukuchi, K.; Moriguchi, Y. A Practical Approach to Screening Potential Environmental Hotspots of Different Impact Categories in Supply Chains. Sustainability 2015, 7, 11878-11892.

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