Lifetime climate impacts of diet transitions: a novel climate change accounting perspective

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dc.citation.issue10
dc.citation.volume13
dc.contributor.authorBarnsley JE
dc.contributor.authorChandrakumar C
dc.contributor.authorGonzalez-Fischer C
dc.contributor.authorEme PE
dc.contributor.authorBourke BEP
dc.contributor.authorSmith NW
dc.contributor.authorDave LA
dc.contributor.authorMcNabb WC
dc.contributor.authorClark H
dc.contributor.authorFrame DJ
dc.contributor.authorLynch J
dc.contributor.authorRoche JR
dc.contributor.editorCarolan M
dc.coverage.spatialSwitzerland
dc.date.accessioned2024-10-14T22:25:52Z
dc.date.available2024-10-14T22:25:52Z
dc.date.issued2021-05-17
dc.description.abstractDietary transitions, such as eliminating meat consumption, have been proposed as one way to reduce the climate impact of the global and regional food systems. However, it should be ensured that replacement diets are indeed nutritious and that climate benefits are accurately accounted for. This study uses New Zealand food consumption as a case study for exploring the cumulative climate impact of adopting the national dietary guidelines and the substitution of meat from hypothetical diets. The new GWP* metric is used as it was designed to better reflect the climate impacts of the release of methane than the de facto standard 100-year Global Warming Potential metric (GWP100). A transition at age 25 to the hypothetical dietary guideline diet reduces cumulative warming associated with diet by 7 to 9% at the 100th year compared with consuming the average New Zealand diet. The reduction in diet-related cumulative warming from the transition to a hypothetical meat-substituted diet varied between 12 and 15%. This is equivalent to reducing an average individual's lifetime warming contribution by 2 to 4%. General improvements are achieved for nutrient intakes by adopting the dietary guidelines compared with the average New Zealand diet; however, the substitution of meat items results in characteristic nutrient differences, and these differences must be considered alongside changes in emission profiles.
dc.description.confidentialfalse
dc.edition.editionMay 2021
dc.format.pagination5568-
dc.identifier.author-urlhttps://www.ncbi.nlm.nih.gov/pubmed/34164161
dc.identifier.citationBarnsley JE, Chandrakumar C, Gonzalez-Fischer C, Eme PE, Bourke BEP, Smith NW, Dave LA, McNabb WC, Clark H, Frame DJ, Lynch J, Roche JR. (2021). Lifetime climate impacts of diet transitions: a novel climate change accounting perspective.. Sustainability. 13. 10. (pp. 5568-).
dc.identifier.doi10.3390/su13105568
dc.identifier.eissn2071-1050
dc.identifier.elements-typejournal-article
dc.identifier.issn2071-1050
dc.identifier.numberARTN 5568
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/71710
dc.languageeng
dc.publisherMDPI (Basel, Switzerland)
dc.publisher.urihttps://www.mdpi.com/2071-1050/13/10/5568
dc.relation.isPartOfSustainability
dc.rights(c) The author/sen
dc.rights.licenseCC BYen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectGWP*
dc.subjectNew Zealand
dc.subjectclimate change
dc.subjectdietary change
dc.subjectgreenhouse gas emissions
dc.titleLifetime climate impacts of diet transitions: a novel climate change accounting perspective
dc.typeJournal article
pubs.elements-id446077
pubs.organisational-groupOther
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