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On household food stock and waste under risk

Author

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  • Jian Li
  • Wuyang Hu
  • Ping Qing
  • Jean‐Paul Chavas

Abstract

This paper investigates household behavioral response to disruptions in the food supply chain, with a focus on the role for risk and its effects on household food stocks and food waste. We present an empirical analysis based on data from Chinese consumers over multiple periods in 2019 and during the COVID‐19 crisis of 2020. We investigate how household behavior changed during the COVID‐19 crisis, documenting both food stockpiling and increased food waste. The econometric analysis relies on a control function approach to handle endogeneity. We decompose the effects of increased risk on waste during the crisis into two components: the direct effect reflecting household decisions conditional on food stock; and the indirect effect associated with induced adjustments in food stock. Both effects on food waste are found to be positive, reflecting difficulties households have in managing large food stocks. We present evidence that one percentage point increase in household stocks during a period of supply disruption contributed to a 0.055–0.297 percentage point increase in food waste across food categories. We also present evidence that these effects may persist over time. Cet article étudie la réponse comportementale des ménages aux perturbations de la chaîne d'approvisionnement alimentaire, en mettant l'accent sur le rôle du risque et ses effets sur les stocks alimentaires des ménages et le gaspillage alimentaire. Nous présentons une analyse empirique basée sur les données des consommateurs chinois sur plusieurs périodes en 2019 et pendant la crise du COVID‐19 de 2020. Nous étudions comment le comportement des ménages a changé pendant la crise du COVID‐19, en documentant à la fois la constitution de stocks alimentaires et l'augmentation du gaspillage alimentaire. L'analyse économétrique s'appuie sur une approche de fonction de contrôle pour gérer l'endogénéité. Nous décomposons les effets d'un risque accru sur le gaspillage pendant la crise en deux composantes: l'effet direct reflétant les décisions des ménages conditionnels au stock alimentaire; et l'effet indirect associé aux ajustements induits des stocks alimentaires. Les deux effets sur le gaspillage alimentaire s'avèrent positifs, reflétant les difficultés rencontrées par les ménages pour gérer d'importants stocks alimentaires. Nous présentons des preuves selon lesquelles une augmentation d'un point de pourcentage des stocks des ménages pendant une période de rupture d'approvisionnement a contribué à une augmentation de 0,055 à 0,297 point de pourcentage du gaspillage alimentaire dans toutes les catégories alimentaires. Nous présentons également des preuves que ces effets peuvent persister dans le temps.

Suggested Citation

  • Jian Li & Wuyang Hu & Ping Qing & Jean‐Paul Chavas, 2024. "On household food stock and waste under risk," Canadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie, Canadian Agricultural Economics Society/Societe canadienne d'agroeconomie, vol. 72(1), pages 23-44, March.
  • Handle: RePEc:bla:canjag:v:72:y:2024:i:1:p:23-44
    DOI: 10.1111/cjag.12354
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    References listed on IDEAS

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