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La politique optimale de séquestration du carbone par les sols agricoles en France

Author

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  • Lionel Ragot

    (CES - Centre d'économie de la Sorbonne - UP1 - Université Paris 1 Panthéon-Sorbonne - CNRS - Centre National de la Recherche Scientifique)

  • Katheline Schubert

    (CES - Centre d'économie de la Sorbonne - UP1 - Université Paris 1 Panthéon-Sorbonne - CNRS - Centre National de la Recherche Scientifique, PSE - Paris School of Economics - UP1 - Université Paris 1 Panthéon-Sorbonne - ENS-PSL - École normale supérieure - Paris - PSL - Université Paris Sciences et Lettres - EHESS - École des hautes études en sciences sociales - ENPC - École des Ponts ParisTech - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement)

Abstract

The Kyoto Protocol, which came in force in February 2005, allows countries to resort to "supplementary activities" consisting, in particular, in the sequestration of carbon in agricultural soils. Considering the importance of its agricultural land and its weak possibilities of low-cost reduction in GHG emissions (given the high nuclear share in electricity generation), France can exploit this opportunity. This paper analyzes the optimal path of carbon sequestration in French agricultural soils. Our model takes into account one of the essential characteristics of the dynamics of carbon storage in agricultural soils: the asymmetry of the sequestration/de-sequestration process. The calibration of the model on French data gives a clear-cut result: the adoption of sequestration practices must be permanent. A temporary sequestration is never optimal. Numerical simulations also show the sensitivity of the optimal policy to sequestration costs and to the bounded number of units of land on which a change of practice can take place at each date. The numerical results demonstrate that a permanent sequestration policy leads to temporary emission reductions. These annual reductions are very limited as compared to the Kyoto objectives for France.
(This abstract was borrowed from another version of this item.)

Suggested Citation

  • Lionel Ragot & Katheline Schubert, 2009. "La politique optimale de séquestration du carbone par les sols agricoles en France," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) halshs-00308805, HAL.
  • Handle: RePEc:hal:cesptp:halshs-00308805
    DOI: 10.2307/27917381
    as

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    Keywords

    séquestration du carbone;

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