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The key role of production efficiency changes in livestock methane emission mitigation

Chang, Jinfeng and Peng, Shushi and Yin, Yi and Ciais, Philippe and Havlik, Petr and Herrero, Mario (2021) The key role of production efficiency changes in livestock methane emission mitigation. . (Unpublished)

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The livestock sector is the largest source of anthropogenic methane emissions, and is projected to increase in the future with increased demand for livestock products. Here, we compare livestock methane emissions and emission intensities, defined by the amount of methane emitted per unit of animal proteins, estimated by different methodologies, and identify mitigation potentials in different regions of the world based on possible future projections. We show that emission intensity decreased for most livestock categories globally during 2000-2018, due to an increasing protein-production efficiency, and the IPCC Tier 2 method should be used for capturing the temporal changes in the emission intensities. We further show that efforts on the demand-side to promote balanced, healthy and environmentally-sustainable diets in most countries will not be sufficient to mitigate livestock methane emissions without parallel efforts to improve production efficiency. The latter efforts have much greater mitigating effects than demand-side efforts, and hence should be prioritized in a few developing countries that contribute most of the mitigation potential.

Item Type:Report or Paper (Discussion Paper)
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URLURL TypeDescription Paper ItemData studies/food-agriculture-projections-to-2050/en/Related ItemData
Chang, Jinfeng0000-0003-4463-7778
Peng, Shushi0000-0001-5098-726X
Yin, Yi0000-0003-4750-4997
Ciais, Philippe0000-0001-8560-4943
Havlik, Petr0000-0001-5551-5085
Herrero, Mario0000-0002-7741-5090
Additional Information:License: Attribution 4.0 International. Published Online: Sun, 11 Apr 2021. J.C is supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA26010303). P.C acknowledges support from the CLAND Convergence Institute of the French National Research Agency (ANR). Data Availability Statement: The data used in this study are available in the Supporting Information. The raw data are from FAO: and The results of this study, and the R code and the parameter files used to produce them are available at:
Funding AgencyGrant Number
Chinese Academy of SciencesXDA26010303
Agence Nationale pour la Recherche (ANR)UNSPECIFIED
Record Number:CaltechAUTHORS:20210414-145511582
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:108735
Deposited By: Tony Diaz
Deposited On:19 Apr 2021 18:31
Last Modified:19 Apr 2021 18:31

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