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The environmental Kuznets curve (EKC): a logistic curve?

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  • Sanjeev Sobhee

Abstract

This study argues that the environmental Kuznets curve (EKC) can be shaped as a logistic curve rather than a mere quadratic equation. Instead of being modelled as a polynomial of degree two, the EKC can be characterized by a polynomial of degree three. The inverted-U shape remains. However, in the proposed specification, what matters, is the rate at which total environmental degradation (TED) occurs, that is, marginal environmental degradation (MED). When TED is quadratic, MED is linearly represented with respect to per capita output. This is considered to be inconsistent with real-life situations, and instead a quadratic MED is postulated, from which a logistic EKC is derived. Prior to a given income threshold, MED rises, attains a maximum at the threshold, and falls ultimately beyond it. This formulation of the EKC conforms to the probabilistic econometric models usually applied in environmental studies.

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  • Sanjeev Sobhee, 2004. "The environmental Kuznets curve (EKC): a logistic curve?," Applied Economics Letters, Taylor & Francis Journals, vol. 11(7), pages 449-452.
  • Handle: RePEc:taf:apeclt:v:11:y:2004:i:7:p:449-452
    DOI: 10.1080/1350485042000207216
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    1. Arrow, Kenneth & Bolin, Bert & Costanza, Robert & Dasgupta, Partha & Folke, Carl & Holling, C.S. & Jansson, Bengt-Owe & Levin, Simon & Mäler, Karl-Göran & Perrings, Charles & Pimentel, David, 1996. "Economic growth, carrying capacity, and the environment," Environment and Development Economics, Cambridge University Press, vol. 1(01), pages 104-110, February.
    2. Stern, David I. & Common, Michael S. & Barbier, Edward B., 1996. "Economic growth and environmental degradation: The environmental Kuznets curve and sustainable development," World Development, Elsevier, vol. 24(7), pages 1151-1160, July.
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    Cited by:

    1. Massimiliano Mazzanti & Anna Montini & Roberto Zoboli, 2006. "Municipal Waste Production, Economic Drivers, and ‘New’ Waste Policies: EKC Evidence from Italian Regional and Provincial Panel Data," Working Papers 2006.155, Fondazione Eni Enrico Mattei.
    2. Shu-Chun Chang, 2014. "Implication for cities of the liberalizing national economies in twenty-first century," Applied Economics, Taylor & Francis Journals, vol. 46(4), pages 400-407, February.
    3. Massimiliano Mazzanti & Anna Montini & Roberto Zoboli, 2008. "Environmental Kuznets Curves for Air Pollutant Emissions in Italy: Evidence from Environmental Accounts (NAMEA) Panel Data," Economic Systems Research, Taylor & Francis Journals, vol. 20(3), pages 277-301.
    4. Mbatu, Richard S., 2015. "Domestic and international forest regime nexus in Cameroon: An assessment of the effectiveness of REDD+ policy design strategy in the context of the climate change regime," Forest Policy and Economics, Elsevier, vol. 52(C), pages 46-56.
    5. Park, Soonae & Lee, Youngmi, 2011. "Regional model of EKC for air pollution: Evidence from the Republic of Korea," Energy Policy, Elsevier, vol. 39(10), pages 5840-5849, October.

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