نتایج جستجو برای: conservation and management of water resources

تعداد نتایج: 24149516  

Indigenous flood harvesting method for irrigation in Khorasan, which are called water-spreading weir are constructed and operated by farmers without any cost to the government. Although, the benefits of water-spreading weirs are clear for many experts and the authorities as well, this method receives a little attention by governmental soil and water conservation services. This problem and a few...

Journal: :اکو هیدرولوژی 0
سید علیرضا موسوی استادیار، دانشکدۀ منابع طبیعی، دانشگاه صنعتی اصفهان، اصفهان حسین ارزانی استاد، دانشکده منابع طبیعی، دانشگاه تهران، کرج

natural ecosystems provide many goods and services for human beings via their multiple functionalities. one of these important functions is the role of natural ecosystems in regulation of hydrologic cycle and increasing the infiltarion and retention of water in soil context and preventing from water runoff which may cause in unfavorable consequences like soil erosion and flooding. quantificatio...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1390

abstract ion selective electrodes (ises) are electrochemical sensors that respond selectivity to the activity of ionic species. an ion-selective electrode is an electrochemical device that uses a thin selective membrane or film as the recognition element, and is an electrochemical half-cell equivalent to other half-cells of the zeroth (inert metal in a redox electrolyte). in common methods o...

Journal: :آب و توسعه پایدار 0

water resources are of vital human resources and of the three main elements of ecosystem. almost half of the agricultural products of the world are being produced in irrigation schemes. in today's world, the population is considerably increasing and consequently severe shortage of food threatens about two-third of the world's population. moreover, water resources are facing more serious crisis ...

Journal: :محیط شناسی 0
مهندس هنریک مجنونیان

wildlife sancturies (w.s.) according to iucn classification need less conservation, but more development plan. lavandville w.s.: (less than 1000 ha, nw of iran) is located near caspian sea and !is important as habitats for waterfowl and other birds. physical resources (sands and oyster shells) of l.w.s. are exploited ; by local people. the area also provides outdoor .recreational apportunities ...

Journal: :international journal of environmental research 2013
s. rasi nezami m. nazariha a. moridi a. baghvand

maharlou-bakhtegan catchment in the southern part of iran is faced with water scarcity.this problem is exacerbated by environmental degradation, climate change effects, mismanagementof water resources, along with a major dependence of water demand supplies on the limitedgroundwater resources. in this study, a combined approach of dpsir model along with the scenarioanalysis was employed to deriv...

2015
Richard T. Prentki Larry J. Paulson

Follow this and additional works at: http://digitalscholarship.unlv.edu/water_pubs Part of the Aquaculture and Fisheries Commons, Biochemistry Commons, Biology Commons, Environmental Indicators and Impact Assessment Commons, Environmental Monitoring Commons, Fresh Water Studies Commons, Natural Resource Economics Commons, Natural Resources and Conservation Commons, Natural Resources Management ...

2015

Follow this and additional works at: http://digitalscholarship.unlv.edu/water_pubs Part of the Biogeochemistry Commons, Desert Ecology Commons, Environmental Indicators and Impact Assessment Commons, Environmental Monitoring Commons, Fresh Water Studies Commons, Natural Resource Economics Commons, Natural Resources and Conservation Commons, Natural Resources Management and Policy Commons, Susta...

2017
Donna L. Rose

Follow this and additional works at: https://digitalscholarship.unlv.edu/water_pubs Part of the Biogeochemistry Commons, Desert Ecology Commons, Environmental Indicators and Impact Assessment Commons, Environmental Monitoring Commons, Fresh Water Studies Commons, Natural Resource Economics Commons, Natural Resources and Conservation Commons, Natural Resources Management and Policy Commons, Sust...

2015
Larry J. Paulson John R. Baker L. J. Paulson

Follow this and additional works at: http://digitalscholarship.unlv.edu/water_pubs Part of the Environmental Chemistry Commons, Environmental Engineering Commons, Environmental Health and Protection Commons, Environmental Indicators and Impact Assessment Commons, Environmental Monitoring Commons, Fresh Water Studies Commons, Natural Resources and Conservation Commons, Natural Resources Manageme...

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