Rainwater harvesting and groundwater conservation: when endogenous heterogeneity matters

Soubeyran, R. ; Tidball, M. ; Tomini, A. ; Erdlenbruch, K.

Type de document
Article de revue scientifique à comité de lecture
Langue
Anglais
Affiliation de l'auteur
INRA MONTPELLIER FRA ; INRA MONTPELLIER FRA ; CNRS MARSEILLE FRA ; IRSTEA MONTPELLIER UMR G-EAU FRA
Année
2015
Résumé / Abstract
In this paper, we focus on resource conservation in a model of decentralized management of groundwater and rainwater. We show that a conservation policy may have opposite effects on the level of the resource, depending on the outcome of the decentralized management. More precisely, we consider identical farmers who can use two water resources (groundwater and/or rainwater) and we study the symmetric and asymmetric feedback stationary Nash equilibria of the dynamic game. We show that a subsidy on the use of rainwater may increase the level of the aquifer at the symmetric equilibrium, whereas it decreases the level of the aquifer at the asymmetric equilibrium. This suggests that the usual focus on (interior) symmetric equilibria in dynamic games may provide misleading policy implications.
Source
Environmental and Resource Economics, vol. 62, num. 1, p. 19 - 34
Editeur
Springer

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