Analyzing the economics of food loss and waste reductions in a food supply chain
Analyzing the economics of food loss and waste reductions in a food supply chain
复制标题
DOI：
10.1016/j.foodpol.2020.101953
复制
发表时间：
2021-02-11
期刊：
影响因子：
6.5
通讯作者：
Sethi, Geeta
中科院分区：
文献类型：
--
作者：
de Gorter, Harry;Drabik, Dusan;Sethi, Geeta
该论文基于首要原则为消费者、中介机构和农民提供了一个食物浪费的经济模型。我们区分了每个中介的购买和销售，消费者的购买和消费，以及农民的总生产与销售。由于供应链的每个阶段都存在浪费，代理商需要更高的销售价格来补偿。我们的模型能够更准确地预测旨在减少食物浪费的干预措施（公共政策或私人举措）如何影响整体市场，包括间接（级联）效应。我们展示了这些相互作用的独特性与一个正式的模型和模拟校准的市场参数和浪费率在英国的两种商品（鸡肉和水果）的实证模型。我们发现，减少浪费的影响因商品而异，这取决于供需弹性，国际贸易开放程度以及价值链每个阶段的粮食损失和浪费的初始速度。供应链上下的级联效应意味着，在某些情况下，减少粮食浪费的干预措施将得到加强，而在其他情况下，减少粮食浪费的干预措施将被部分抵消。
The paper provides an economic model of food waste for consumers, intermediaries and farmers based on first principles. We distinguish between purchases and sales for each intermediary, purchases and consumption for consumers, and gross production versus sales for farmers. Because of waste at each stage of the supply chain, agents need higher sales prices to compensate. Our model is able to make more accurate predictions of how interventions (public policies or private initiatives) designed to reduce food waste influence the markets overall, including indirect (cascading) effects. We show the uniqueness of these interaction effects with a formal model and simulate an empirical model calibrated to market parameters and rates of waste for two commodities (chicken and fruit) in the UK. We show that the impacts of reducing waste vary by commodity, depending on supply and demand elasticities, degree of openness to international trade and the initial rates of food loss and waste at each stage of the value chain. The cascading effects up and down the supply chain mean that in some cases interventions to reduce food waste will be reinforced while in other cases partially offset.