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Ressources renouvelables et non renouvelables, impatience et progrès technique exogène

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  • Jean-Pierre Amigues
  • Ngo Van Long

    ()

  • Michel Moreaux

    ()

Abstract

There is a large literature on the optimal order of exploitation of natural resources. We explore the impact of specific technical progress that enables the saving of resource inputs in production on the order of exploitation. Models of growth tend to assume uniform and global technical progess. Our model however specifies that technical progress is specific to certain inputs. Under a set of plausible assumptions, we show that, for certain sets of parameter values, it may be optimal to use exclusively at first a non renewable resource, then stop using this resource and switch into a renewable resource, and finally return to the use of the non renewable resource. Il existe une littérature assez abondante sur l'ordre dans lequel une société devrait utiliser ses ressources au cours du temps. Ce que nous voudrions explorer ici c'est l'incidence d'un progrès technique spécifique, permettant d'économiser les quantités de ressources requises par unité de produit, sur l'ordre dans lequel les dites ressources doivent être consommées le long d'un sentier optimal d'évolution de l'économie. Une certaine tradition issue de la théorie de la croissance tend à concevoir le progrès technique comme une amélioration globale de la productivité de tous les facteurs. Le modèle développé ici part au contraire de l'idée qu'il existe un progrès technique spécifique qui vise à améliorer la productivité de tel ou tel facteur. Sous un ensemble d'hypothèses plausibles, on montre que, pour certaines valeurs des paramètres du modèle, la société peut avoir intérêt à consommer d'abord une partie de son stock de ressource non renouvelable pendant un certain temps, puis arrêter d'utiliser cette ressource pour n'utiliser que la ressource renouvelable et enfin utiliser à nouveau la ressource non renouvelable.

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Bibliographic Info

Paper provided by CIRANO in its series CIRANO Working Papers with number 2004s-07.

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Date of creation: 01 Feb 2004
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Handle: RePEc:cir:cirwor:2004s-07

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Keywords: technical progress; order of exploitation; natural resources; progrès technique spécifique; ordre d'exploitation; ressources naturelles;

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References

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  1. Heal, Geoffrey M., 1993. "The optimal use of exhaustible resources," Handbook of Natural Resource and Energy Economics, in: A. V. Kneese† & J. L. Sweeney (ed.), Handbook of Natural Resource and Energy Economics, edition 1, volume 3, chapter 18, pages 855-880 Elsevier.
  2. Gerard Gaudet & Michel Moreaux & Stephen W. Salant, 2001. "Intertemporal Depletion of Resource Sites by Spatially Distributed Users," American Economic Review, American Economic Association, vol. 91(4), pages 1149-1159, September.
  3. Jean-Pierre Amigues & Ngo Van Long & Michel Moreaux, 2004. "Overcoming Natural Resource Constraints Through R&D," CIRANO Working Papers 2004s-14, CIRANO.
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Cited by:
  1. Jean-Pierre Amigues & Ngo Van Long & Michel Moreaux, 2004. "Overcoming Natural Resource Constraints Through R&D," CIRANO Working Papers 2004s-14, CIRANO.

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