Market structure and resilience of food supply chains under extreme events
构建农业供应链概念模型，模拟评估四项政策（反垄断、补贴、反价格欺诈、区域多样化）对韧性和经济福利的影响，发现政策效果取决于市场结构且韧性提升常伴随效率损失。
Abstract Recent extreme events and the disruptions they caused have made food supply chain resilience a key topic for researchers and policymakers. This paper provides input into these discussions by evaluating the efficiency and resilience properties of the leading policy proposals. We develop a conceptual model of a prototype agricultural supply chain, parameterize the model based on the empirical literature, and conduct simulations to assess the impacts on resilience and economic welfare of four key policy proposals: (i) intensified antitrust enforcement to improve market competition, (ii) subsidization of entry of additional processing capacity, (iii) prevention of price spikes through anti‐price‐gouging laws, and (iv) diversification of production and processing across multiple regions. Results show that some of the policies have potential to improve supply‐chain resilience, but their impacts depend on the existing market structure, and resilience gains often come at the cost of reduced efficiency.