نتایج جستجو برای: water scarcity
تعداد نتایج: 559603 فیلتر نتایج به سال:
in this study we investigated the impacts of population increase on life quality, with a special focus on its impact on the natural resources and environmental issues. this analysis was conducted using data over a 16 year period. since water is one of the most important factors contributing to the growth and development of countries, the increase in population size, industry sector growth, urba...
Sustainability of rice production under limited water conditions is threatened by increasing irrigation water scarcity. Therefore, physiological and morphological responses of rice to varying water stress management strategies should be determined. The physiological and morphological responses of a semi dwarf rice (Hashemi cultivar) to water stress intensities (mild and severe, i.e., short-dura...
Water problems are typically studied at the level of the river catchment. About 70% of all water is used for agriculture, and agricultural products are traded internationally. A full understanding of water use is impossible without understanding the international market for food and related products, such as textiles. The water embedded in commodities is called virtual water. Based on a general...
Reservoirs are built worldwide for a higher water supply in dry periods by storing temporarily wet periods. Recent socio-hydrology studies hypothesized, creating “supply–demand cycles”, that reservoirs can lead indirectly to counterintuitive dynamics such as more scarcity and economic social vulnerability. This opinion argues part of co-evolutionary processes with natural, social, engineered el...
Urban communities around the world are grappling with challenges associated population increases, drought, and projected water shortages. With a substantial global shortfall between supply demand expected by 2030, planning strategies must adapt to new reality characterized higher temperatures less precipitation, requiring ways of thinking about management, use, governance. Commonplace such as c...
Beijing is one of the most water-stressed regions in the world. Reducing agricultural water use has long been the basis of local policy for sustainable water use. In this article, the potential to reduce the life cycle (cradle to gate) water footprints of wheat and maize that contribute to 94% of the local cereal production was assessed. Following ISO 14046, consumptive and degradative water us...
to evaluate the hydrogeochemical characteristics of karst water resources of oshtorankooh, chemistry details of springs has been considered as the most important evacuator of karst resources. this research has been performed to study hydrogeochemical nature of karst springs and their origin with an emphasis on the type of formation. accordingly, five samples of the water of permanent springs o...
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