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Assurances et activités de réduction des risques en foresterie : une approche théorique

Author

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  • Marielle Brunette

    (LEF, UMR INRA/AgroParisTech ENGREF et BETA-REGLES, 13 place Carnot, F-54035 Nancy cedex, France)

  • Stéphane Couture

    (LEF, UMR INRA/AgroparisTech ENGREF, Nancy)

Abstract

Cet article propose un modèle théorique (utilité espérée et risque multiplicatif) de choix d’activités de réduction des risques ou d’assurance d’un propriétaire forestier faisant face à un risque de catastrophe naturelle. Notre réflexion part du constat que ces modes de couverture sont rarement utilisés contre les risques naturels. Un tel risque en foresterie se caractérise par un nombre d’états de la nature infini et par une fonction de dommage proportionnelle à la valeur de la forêt. L’article présente des résultats de statique comparative et analyse l’impact sur les décisions privées de subventions versées par l’Etat en cas de catastrophes naturelles. Nous montrons qu’une valeur plus importante du peuplement a généralement un effet ambigu sur le choix des activités de réduction des risques. Cet impact dépend de trois effets : risque, richesse et perte dont le résultat global peut être ambigu. L’effet du coût des activités de gestion des risques dépend des préférences du propriétaire forestier et du caractère risqué ou réducteur de risque de ces activités. Nous démontrons aussi que, si ces activités sont considérées comme un investissement réducteur de risque (risqué), alors plus un propriétaire forestier est riscophobe, plus il choisit un montant d’activités de prévention élevé (faible). Nous montrons également que l’existence d’un programme public d’aide peut inciter les propriétaires forestiers à diminuer leurs activités de prévention ou d’assurance.

Suggested Citation

  • Marielle Brunette & Stéphane Couture, 2008. "Assurances et activités de réduction des risques en foresterie : une approche théorique," Review of Agricultural and Environmental Studies - Revue d'Etudes en Agriculture et Environnement, INRA Department of Economics, vol. 86(1), pages 55-78.
  • Handle: RePEc:rae:jourae:v:86:y:2008:i:1:p:55-78
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    References listed on IDEAS

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    Cited by:

    1. Marielle Brunette & Stephane Couture, 2018. "Risk management activities of a non-industrial privateforest owner with a bivariate utility function," Review of Agricultural, Food and Environmental Studies, INRA Department of Economics, vol. 99(3-4), pages 281-302.

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    More about this item

    Keywords

    insurance; risk-reducing activities; public intervention; forest;
    All these keywords.

    JEL classification:

    • D81 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Criteria for Decision-Making under Risk and Uncertainty
    • G22 - Financial Economics - - Financial Institutions and Services - - - Insurance; Insurance Companies; Actuarial Studies
    • Q23 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Forestry

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