Résumé
In this paper we address the design of dynamic taxation schemes in the presence of multiple interacting stocks. After addressing a general model, we focus the analysis on the context of irrigation-induced salinity. We study various taxes, based either on a collective performance measure (groundwater stock) or on an individual performance measure (irrigation water, rootzone salt stock) or a mix of both. We show the interest for mixed tax schemes to induce agents to follow the optimal input use and stock accumulation paths.