Water scarcity severely impairs food security and economic prosperity in many countries today. Expected future population changes will, in many countries as well as globally, increase the pressure on available water resources. On the supply side, renewable water resources will be affected by projected changes in precipitation patterns, temperature, and other climate variables. Here we use a lar...

abstract in this study, seven main field crops of the rudasht and abshar irrigation networks of esfahan (with 54,000 ha designed command area) such as wheat, barley, onion, sunflower, fodder mays and sugar beet were selected and swap model was calibrated by inverse modeling base on field experiments results in order to determine crop water salinity production functions. field experiments were c...

Water scarcity is already causing serious challenges nowadays and devastating water-related processes will certainly continue for decades to come. The emerging water crisis requires new political arrangements, technological solutions the development of supply chains. Among possible political-diplomatic answers, trade may be a viable option, as abundant countries could distribute resources by co...

7.4 Consequences for Human Well-being of Changes in the Provision of Fresh Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190 7.4.1 Freshwater Provision: Benefits and Investment Requirements 7.4.2 Consequences of Water Scarcity 7.4.3 The Cost and Pricing of Water Delivery 7.4.4 Consequences of Too Much Water: Floods 7.4.5 Consequences of Poor Water Quali...

Contents 1. Introduction 2. The forces that shape agriculture 3. Characteristics of water use for food production 4. How much water to produce food? 5. The outlook for water for agriculture 6. Adapting to water scarcity 7. Rural poverty, water and food security 8. The special role of groundwater 9. Food production and the aquatic environment Glossary Bibliography Biographical Sketch