نتایج جستجو برای: availability of resources including surface water

تعداد نتایج: 21283524  

2013
Brent M. Lofgren Andrew D. Gronewold Anthony Acciaioli Jessica Cherry Allison Steiner David Watkins

Climate change due to anthropogenic greenhouse gases (GHG) is expected to have important impacts on water resources, with a variety of societal impacts. Recent research has shown that applying different methodologies to assess hydrologic impacts can lead to widely diverging projections of water resources. The authors classify methods of projecting hydrologic impacts of climate change into those...

2014
Emily Bennitt Mpaphi Casper Bonyongo Stephen Harris

Seasonal fluctuations in water availability cause predictable changes in the profitability of habitats in tropical ecosystems, and animals evolve adaptive behavioural and spatial responses to these fluctuations. However, stochastic changes in the distribution and abundance of surface water between years can alter resource availability at a landscape scale, causing shifts in animal behaviour. In...

Journal: :journal of agricultural science and technology 0
k. zarafshani department of agricultural extension and education, razi university, kermanshah, islamic republic of iran. m. saadvandi department of agricultural extension and education, college of agriculture, tarbiat-modares university, tehran, islamic republic of iran.

as an assessment method of the water resources, water poverty index (wpi) has become an available tool in water resources management. in particular, agricultural water poverty index (awpi) is an assessment tool for agricultural water in rural areas. during the past decades, mahidasht basin in kermanshah province has been declared by water policy makers as “forbidden” basin in terms of water exp...

Journal: :iranian journal of environmental sciences 0
mina arast department of geography and eco-tourism, faculty of natural resources and earth sciences, university of kashan, kashan, iran gholamreza zehtabian department of arid and mountainous regions reclamation, faculty of natural resources, university of tehran, iran mohammad jafari department of arid and mountainous regions reclamation, faculty of natural resources, university of tehran, iran hassan khosravi department of arid and mountainous regions reclamation, faculty of natural resources, university of tehran, iran bahareh jabalbarezi department of arid and mountainous regions reclamation, faculty of natural resources, university of tehran, iran

population’s exponential growth along with drought has increased water resources limitation, especially in arid and semi-arid area. therefore, the use of non-conventional water is an important tool for water resource management. if unconventional water has no negative impact on soil properties and water, it can be used for irrigation coupled with desertification projects. so, this paper tries t...

ژورنال: علوم آب و خاک 2020

The construction of irrigation network and the water transfer from Karkheh Dam to Dashte-Abbas, due to neglecting the groundwater resources has increased groundwater level and waterlogging of the agricultural land in the recent years. The aim of this study was, therefore, to optimize the conjunctive use of surface and groundwater resources in Dashte-Abbas to minimize waterlogging problems and a...

Journal: :تحقیقات آب و خاک ایران 0
محمدحسن قره داغی کارشناس ارشد دانشکدة فنی و مهندسی دانشگاه بین‏المللی امام خمینی(ره)، گروه مهندسی آب پیمان دانش کار آراسته استادیار دانشکدة فنی و مهندسی دانشگاه بین‏المللی امام خمینی(ره) عبدالمجید لیاقت استاد دانشکدة مهندسی و فناوری کشاورزی دانشگاه تهران عباس ستوده نیا استادیار دانشکدة فنی و مهندسی دانشگاه بین‏المللی امام خمینی(ره)

the management of water table is introduced as one of the major parts of the solutions in water resources management. this method could play a significant role in protecting water resources, increasing irrigation efficiency, preserving nutrients in soil, and protecting the quality of surface downstream, and as well, of groundwater. towards this end, a laboratory study has been done on the effec...

ژورنال: سلامت و محیط زیست 2019

Background and Objective: Scaling and corrosion both are destructive to materials (usually metals) in water supply systems. A dataset (from 2002 to 2013) of groundwater resources (including springs, qanats, deep wells and semi-deep wells) were examined for water tendency to corrosion or scaling in rural regions of Kashan, a city in Isfahan, central Iran. Materials and Methods: Water quality pa...

Introduction: Monitoring and controlling water resources and using health risk assessment approaches for water pollutants are essential for health promotion programs. This study aims to determine the water quality status and its spatiotemporal variation across the Kan River Basin, explore the interrelationship between surface and groundwater quality indices, and assess the nitrate health risk i...

G.R. Karimi H. Paykari M. Derakhshanfar

Two snail species belonging to genus Lymnaea, L.auricularia and L.gedrosiana, were collected from 6 different districts of Shadegan area of Khoozestan. Eight percent of the total collections of the snails revealed the occurrence of larva in them. The prevalence of larva within the snails varied in different districts may be due to different geoclimatic conditions and availability of fresh water...

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