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Water conflicts in tropical watersheds: hydroeconomic simulations of water sharing policies between upstream small private irrigators and downstream large public irrigation schemes in Burkina Faso

Rivaldo Kpadonou B.A., Barbier B., Wellens J., Sauret E., Zangré B.V.C.A.. 2015. Water International, 40 (7) : p. 1021-1039.

A spatial hydroeconomic model was developed to analyze the competition between small private (SPIS) and large public (LPIS) irrigation systems for water control in tropical watersheds and applied to several water allocation policies in Kou watershed in Burkina Faso. Capital (cash and motorpumps) is the main constraining factor for SPIS expansion, and capital inflow accelerates SPIS development and reduces water flows for downstream LPIS users. As SPIS is more cost-effective and less water thirsty, LPIS needs to shift to less waterdemanding and high-value crops or adopt more water-saving practices. Otherwise, only a sharp rice yield increase in LPIS can justify a reserved water quota for downstream users. (Résumé d'auteur)

Mots-clés : oryza sativa; méthode d'irrigation; modèle mathématique; financement; efficience d'utilisation de l'eau; irrigation; eau d'irrigation; gestion des eaux; grande exploitation agricole; petite exploitation agricole; droit de l'eau; modèle économétrique; utilisation de l'eau; burkina faso

Thématique : Ressources en eau et leur gestion; Irrigation; Economie de la production; Méthodes mathématiques et statistiques

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