Nonstationarity in the Specification of the Environmental Kuznets Curve
AbstractNumerous studies have addressed the question of the econometric specification of the Environmental Kuznets Curve (EKC). This paper adds preliminary results on nonstationarity and its effect on functional form using a panel data set for the U.S. by state from 1929 to 1994. It is found that unit-root tests strongly support a unit root in pollutants (sulfur dioxide and nitrogen oxide) and income when testing individual states. The results from panel data unit root tests provide mixed evidence about nonstationarity in EKC data.
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Bibliographic InfoPaper provided by American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association) in its series 2005 Annual meeting, July 24-27, Providence, RI with number 19270.
Date of creation: 2005
Date of revision:
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Environmental Kuznets curve; fixed and random effects; parametric models; water pollution; watershed; nonstationarity; unit-roots; Environmental Economics and Policy;
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