Inter-temporal wastewater reuse in irrigation and revenue maximization: the case of Tyre region, south Lebanon

agricultural development agua dulce arid climate arid zones aridoculture clima arido climat aride conduite de la culture crop management desert desertification deserts desiertos drought stress dry farming eau douce efficiency eficacia embalses estres freshwater income lebanon liban libano linear models linear programming manejo del cultivo modelos lineales reclamation renta revenu riego complementario riego con aguas residuales semiarid zones stress supplemental irrigation uso del agua utilisation de l'eau wastewater irrigation water reservoirs water use zone aride