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Un modèle de décroissance optimale

Author

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  • Marc Germain

    (LEM-CNRS (UMR 9221), Université de Lille 3 and UNIVERSITE CATHOLIQUE DE LOUVAIN, Institut de Recherches Economiques et Sociales (IRES))

Abstract

Dans le cadre d'un modèle de croissance à la Ramsey avec ressource naturelle et pollution et reposant sur certains postulats de l'économie écologique, ce papier étudie les effets de politiques de décroissance volontaire sur la production et le bien-être. L'instrument de ces politiques est une taxe prélevée sur la ressource naturelle. Ces politiques sont appliquées par les pouvoirs publics suite au retournement de la fonction d'utilité des ménages induit par l'augmentation de la pollution. Par rapport à la situation de laisser-faire, leur résultat est à la fois de réduire la production et la pollution d'une part, et d'accroître le bien-être d'autre part. Une réaction plus tardive des autorités publiques suite au retournement de la fonction d'utilité des ménages implique que la taxation de la ressource naturelle doit être plus élevée pendant les premières périodes. Si la préférence pour le futur des autorités est plus grande, alors les gains d'utilité dus à la politique de décroissance sont moindres pour les premières générations de la dynastie et supérieurs pour les suivantes. L'impact du progrès technique économisant la ressource ou améliorant le traitement de la pollution est également analysé. With the help of a growth model à la Ramsey with a natural resource and pollution and relying on postulates of ecological economics, this paper studies the impact of voluntary degrowth policies on production and welfare. The instrument of these policies is a tax levied on the natural resource. These policies are assumed to be applied by the public authorities after the downturn of the households'utility function due to the increase of pollution. With respect to the laisser-faire situation, their impact is to simultaneously decrease production and pollution on the one hand and increase welfare on the other. A delayed reaction of the public authorities after the turnover of the households'utility function implies a higher tax rate on the resource during the first periods. If the authorities'preference for the future is higher, then welfare gains from the degrowth policy are lower for the first generations of the dynasty and higher for the later. The impact of technical progress saving the resource or improving the pollution treatment is also analysed.

Suggested Citation

  • Marc Germain, 2016. "Un modèle de décroissance optimale," LIDAM Discussion Papers IRES 2016008, Université catholique de Louvain, Institut de Recherches Economiques et Sociales (IRES).
    • Handle: RePEc:ctl:louvir:2016008
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    File URL: http://sites.uclouvain.be/econ/DP/IRES/2016008.pdf
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    References listed on IDEAS

    as
    1. Marc Germain, 2012. "Equilibres et effondrement dans le cadre d'un cycle naturel," Brussels Economic Review, ULB -- Universite Libre de Bruxelles, vol. 55(4), pages 427-455.
    2. Bilancini, Ennio & D'Alessandro, Simone, 2012. "Long-run welfare under externalities in consumption, leisure, and production: A case for happy degrowth vs. unhappy growth," Ecological Economics, Elsevier, vol. 84(C), pages 194-205.
    3. Max-Neef, Manfred, 1995. "Economic growth and quality of life: a threshold hypothesis," Ecological Economics, Elsevier, vol. 15(2), pages 115-118, November.
    4. Heikkinen, T., 2015. "(De)growth and welfare in an equilibrium model with heterogeneous consumers," Ecological Economics, Elsevier, vol. 116(C), pages 330-340.
    5. Marc Germain, 2012. "Equilibres et effondrement dans le cadre d'un cycle naturel," Working Papers hal-00989886, HAL.
    6. Victor, Peter A., 2012. "Growth, degrowth and climate change: A scenario analysis," Ecological Economics, Elsevier, vol. 84(C), pages 206-212.
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    Cited by:

    1. Germain, Marc, 2017. "Optimal Versus Sustainable Degrowth Policies," Ecological Economics, Elsevier, vol. 136(C), pages 266-281.

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    More about this item

    Keywords

    degrowth; steady state economics; pollution tax;
    All these keywords.

    JEL classification:

    • O44 - Economic Development, Innovation, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - Environment and Growth
    • O49 - Economic Development, Innovation, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - Other
    • Q57 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Ecological Economics

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