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Roadmap for achieving net-zero emissions in global food systems by 2050.

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Food systems emit 35% of global greenhouse gases. Intensifying these systems could achieve net-zero emissions by 2050 through reduced emissions, carbon sequestration, and dietary shifts.

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Area of Science:

  • Environmental Science
  • Climate Change Mitigation
  • Food Systems Analysis

Background:

  • Food systems contribute significantly to global greenhouse gas emissions, approximately 20 GtCO2e/year (35%).
  • Projected increases in food demand threaten global climate targets if emissions continue to rise.
  • Current emission levels pose a substantial risk to achieving international climate goals.

Purpose of the Study:

  • To assess the potential for food systems to achieve net-zero greenhouse gas emissions by 2050.
  • To evaluate low-emission and carbon sequestration practices within food systems.
  • To identify pathways for reducing food system emissions without relying on traditional carbon offsets.

Main Methods:

  • Rapid assessment of over 60 scenarios.
  • Analysis of existing low-emission and carbon sequestration practices.
  • Modeling of emission reduction potentials and carbon sequestration capacities.

Main Results:

  • Intensifying food systems could reduce emissions from 21.4 to -2.0 GtCO2e/year.
  • A pathway involving shifting to less emission-intensive production (45% reduction), 50% carbon sequestration potential, and diet shifts/new technologies (~6 GtCO2e/year) is identified.
  • Achieving net-zero requires a diverse portfolio of practices, including diet shifts and novel technologies.

Conclusions:

  • Net-zero food systems are achievable by 2050 through a combination of mitigation strategies.
  • Successful transition necessitates cost-effective practices, improved governance, financial innovation, and research into affordable technologies within the next two decades.
  • A clear vision and actionable options are provided to guide the global food system towards climate neutrality.