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Urban Food Systems: How Regionalization Can Contribute to Climate Change Mitigation.

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Regionalizing urban food systems can cut transport emissions. However, achieving this requires improving farming, reducing waste, and eating seasonally to maximize benefits for global warming mitigation.

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Area of Science:

  • Urban food systems
  • Climate change mitigation
  • Sustainable agriculture

Background:

  • Cities are central to global food security due to high population density and demand.
  • Shortening food supply chains to a regional basis is a proposed solution for sustainability.
  • Greenhouse gas emissions from food transport are a significant environmental concern.

Purpose of the Study:

  • To investigate the potential of regionalized urban food systems to mitigate greenhouse gas emissions from food transport.
  • To compare transport emissions between regionalized and globalized food supply chains for urban areas.

Main Methods:

  • Utilized food consumption data for 7108 urban administrative units (UAUs).
  • Simulated total transport emissions for both regionalized (peripheral production) and globalized (international pool) supply chains.
  • Analyzed the conditions necessary for emission reductions in regionalized systems.

Main Results:

  • Regionalized food systems demonstrate potential for reducing current food transport emissions.
  • Significant emission reductions are contingent upon closing yield gaps, reducing food waste, and promoting diversified, seasonal farming.
  • Maximizing comparative advantage in longer supply chains currently offers benefits that regionalization must address.

Conclusions:

  • Regionalization of urban food systems is a crucial strategy for limiting global warming.
  • Achieving climate benefits requires concurrent advancements in agricultural efficiency, waste reduction, and dietary shifts.
  • Sustainable urban food systems are essential for meeting global climate targets.