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Climate change mitigation through livestock system transitions.

Petr Havlík1, Hugo Valin, Mario Herrero

  • 1Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, A-2361 Laxenburg, Austria.

Proceedings of the National Academy of Sciences of the United States of America
|February 26, 2014
PubMed
Summary
This summary is machine-generated.

Sustainable livestock intensification can reduce greenhouse gas emissions. Policies targeting land-use change alongside efficient livestock systems offer the most effective climate mitigation with minimal impact on food availability.

Keywords:
deforestationfood securitymarginal abatement costmathematical programmingproductivity

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Area of Science:

  • Agricultural Economics
  • Climate Change Mitigation
  • Environmental Science

Background:

  • Livestock production contributes 12% of global anthropogenic greenhouse gas emissions.
  • Variability in livestock systems complicates climate policy implementation.
  • Sustainable intensification of livestock is a potential climate mitigation strategy.

Purpose of the Study:

  • To model the impact of livestock production system transitions on greenhouse gas emissions.
  • To evaluate the effectiveness of different climate mitigation policies.
  • To assess the trade-offs between climate mitigation and food availability.

Main Methods:

  • Economic modeling with high-resolution livestock production data.
  • Projection of emissions reduction under autonomous transitions and carbon pricing scenarios.
  • Analysis of policy impacts on abatement and food availability.

Main Results:

  • Autonomous transitions by 2030 could cut emissions by 736 MtCO2e/year, primarily via avoided land conversion.
  • A moderate carbon price policy (US$10/tCO2e) could achieve 3,223 MtCO2e/year abatement.
  • Land-use change policies are 5-10 times more cost-efficient for climate mitigation than livestock-emission-focused policies.

Conclusions:

  • Combining livestock system improvements with land-use change policies is the most efficient mitigation strategy.
  • Policies targeting land-use change offer significant climate benefits with lower food availability impacts.
  • Effective climate mitigation requires a nuanced approach considering both agricultural and land-use sectors.