Dilemma of fossil water management within Southern Tunisia oases: vulnerability to salt under intensive use context
Résumé
In southern Tunisia oases, water is the most important natural resource. The survival of those ecosystems is conditioned by the availability of such resource. Under an arid climate, oases inhabitants acquired secular traditions in water management. These oases observed a lightening development. The improvement in drilling techniques reinforced their capabilities to provide for the expansion of urban water needs and irrigation requirements. Despite being fossils, underground water resources are sustaining an overexploitation that definitely compromises the sustainable development of the whole ecosystem. Such scenario leads to a continuous decrease in their level that approaches those of chott. This enhances their vulnerability to contamination risks coming from salty drainage water. Indeed, this presentation focuses on the major factors and consequences of such risk. It highlights also the impact on underground water resources availability.
Domaines
Environnement et SociétéOrigine | Fichiers produits par l'(les) auteur(s) |
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