Food Systems Geography: Supply Chain Fragility, Agroecological Zones, and Dietary Sovereignty

食物系统地理：供应链脆弱性、农业生态区与饮食主权

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The 2022 Sri Lankan fertilizer ban triggered crop failures not because of chemical dependency, but because soil microbiome diversity—degraded over decades of monocropping—couldn’t buffer the shock.
Agroecological zoning now maps ‘climate-resilient crop corridors’ across sub-Saharan Africa, prioritizing sorghum and millet varieties adapted to erratic rainfall over imported maize hybrids.

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