نتایج جستجو برای: groundwater loss

تعداد نتایج: 473115  

Frequent droughts and their consequences result in the loss of groundwater, the deficiency of nutrients, the drying of surface water resources, and substantially more exploitation of the groundwater resources, which, altogether, cause the mobilization of saline waters to groundwater tables. This will impair the capacity of the aquifers and the quality of the water. The VIKOR method was applied ...

Journal: :تحقیقات آب و خاک ایران 0
احمد جعفرزاده دانشگاه بیرجند عباس خاشعی گروه مهندسی آب، دانشکده کشاورزی، دانشگاه بیرجند علی شهیدی گروه مهندسی آب، دانشکده کشاورزی، دانشگاه بیرجند

due to the limitation of production main resources such as water, allocation of this resources has a high importance. in order to prevent the loss of surface water and groundwater resources and also promoting economic prosperity farmers, applying policies that have been established based on the pattern of cultivation and protection of water resources, will be necessary. in such a situation the ...

2010
Stephen P. Holland Michael R. Moore Marc Reisner

To alleviate Arizona‘s dependence on groundwater, the federal government subsidized construction of the Central Arizona Project (CAP) to import water from the Colorado River. In exchange for the subsidy, Arizona reformed its groundwater law to eliminate common-property pumping and to ban groundwater mining after the year 2025. We build a model of water resource development in which imported wat...

2005
B. K. Pathak F. Kazama

A study on monitoring of nitrogen (N) leaching was conducted in acidsulfate clayey soil in the central region of Thailand. The objective was to measure the N leaching to shallow groundwater from a tropical paddy field to assess the consequences of agricultural management practices. Mass balance approach was used to estimate the contribution of nitrogen fertilizer to the water environment. The N...

2006
John A. Connor Farrukh Ahmad Richard L. Bowers

To support a Natural Resource Damage Assessment (NRDA) for groundwater resources impacted by oil or hazardous substances, careful technical evaluation is required to define the nature and volume of the affected groundwater zone and the associated impact on the potential services provided by the affected aquifer and other interconnected water resources. Relative to the baseline beneficial use fo...

2014
Diana M. P. Galassi Paola Lombardo Barbara Fiasca Alessia Di Cioccio Tiziana Di Lorenzo Marco Petitta Piero Di Carlo

Earthquakes are among the most destructive natural events. The 6 April 2009, 6.3-Mw earthquake in L'Aquila (Italy) markedly altered the karstic Gran Sasso Aquifer (GSA) hydrogeology and geochemistry. The GSA groundwater invertebrate community is mainly comprised of small-bodied, colourless, blind microcrustaceans. We compared abiotic and biotic data from two pre-earthquake and one post-earthqua...

Journal: :Environmental science & technology 2011
Rosalie van Zelm Aafke M Schipper Michiel Rombouts Judith Snepvangers Mark A J Huijbregts

An operational method to evaluate the environmental impacts associated with groundwater use is currently lacking in life cycle assessment (LCA). This paper outlines a method to calculate characterization factors that address the effects of groundwater extraction on the species richness of terrestrial vegetation. Characterization factors (CF) were derived for The Netherlands and consist of a fat...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1392

gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...

2008
R. Willem Vervoort Sjoerd E. A. T. M. van der Zee

[1] Groundwater uptake can play a major role in the survival of vegetation in semiarid areas, but this has not yet been included in an earlier developed ecohydrological stochastic framework. In this paper we provide a piecewise linear equation which includes capillary fluxes from shallow groundwater in the loss function of the ecohydrological stochastic model. The results indicate that this mod...

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