Description: Das Projekt "Optimale Bewirtschaftung von Verbundspeichern (Oberflaechen- und Grundwasser) fuer Bewaesserung" wird vom Umweltbundesamt gefördert und von Universität Hannover, Institut für Wasserwirtschaft, Hydrologie und landwirtschaftlichen Wasserbau durchgeführt. The principal aim of this cooperative research is the development of practical and effective methods for the management of water, a scarce resource in arid and semiarid regions, by conjunctive use. The storage of water surplus of rainy seasons is vital for regions with extrem dry seasons. Surface reservoirs suffer under great evaporation losses in such areas. Moreover, they are relative expensive and their storage capacities decrease in the long-term due to accumulation of sediments in the reservoirs. Through optimal conjunctive operation of surface and groundwater reservoirs it is possible, to assure a greater amount of water for irrigation purposes. The proposers have already developed conceptual models for optimal management under quantity aspects. In the proposed project it should be investigated the optimal management of conjunctive use under quality aspects: Salinization and anrichment of other solutes can lead in the longterm to changes of the groundwater quality, reduction of agricultural yields, reduction of available water, degradation of soils, and loss of arable land. Therefore, it is aimed to consider the water quality by: modelling the solute transport process in groundwater, simulating long-term processes, and developing optimal management strategies. The general purpose models should be applicated to two different conjunctive use systems: 1) The irrigation area of San Juan, Argentina, an intensively used agricultural region, a system of surface reservoir, natural unterground reservoir and artificial recharge sites, and 2) the irrigation area of Morada Nova, Ceara, Brazil, with a surface reservoir and an artificial underground dam...
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Hannover ? Staubecken ? Salzbelastung ? Blei ? Argentinien ? Brasilien ? Grundwasserbewirtschaftung ? Bodendegradation ? Ernteertrag ? Genossenschaft ? Grundwasserzustand ? Grundwasserschutz ? Schadensminderung ? Verdunstung ? Landwirtschaftlicher Wasserbau ? Südamerika ? Wasserqualität ? Ackerland ? Wasserspeicher ? Wasserversorgung ? Sediment ? Trockengebiet ? Management ? Grundwasser ? Wasser ? Agrarraum ? Bewässerung ? Modellierung ? Simulation ? Wasserwirtschaftliche Planung ? Speicherfähigkeit ? Standortwahl ? Wasserstand ? Wasserwirtschaft ? Ressourcenbewirtschaftung ? Hydrologie ? Wasseroberfläche ? Wassersicherstellung ?
Region: Lower Saxony
Bounding box: 9.16667° .. 9.16667° x 52.83333° .. 52.83333°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 1991-01-01 - 1992-12-31
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