نتایج جستجو برای: water shortage

تعداد نتایج: 563405  

Journal: :international journal of agricultural management and development 2016
mostafa mardani saman ziaee elham kalbali samira soltani

water shortage crisis is an issue that has led to drastic changes in different agricultural policies, especially in arid and semi-arid areas. uncertainty in the amount of resources, e.g. water, used for agricultural production entails risk for farmers' income and cropping pattern changes. in the present study, the robust optimization model was used for optimal allocation of arable lands of khor...

Extended abstract 1- Introduction Water scarcity is currently one of the worldchr('39')s challenges, especially in arid and semi-arid regions; This is because population growth and rising living standards require more food and water. Therefore, excessive use of natural resources has led to the destruction of potential agricultural lands and natural resources. The final process is floods, dust...

2009
Bilesha Perera Truls Østbye Chandramali Jayawardana

The prevalence of different neighborhood environmental stressors and associations between the stressors and self-rated health are described in a representative sample of 2,077 individuals, aged 18-85 years, in southern Sri Lanka. Mosquito menace (69.4%), stray dog problems (26.8%), nuisance from neighbors (20.3%), and nuisance from drug users (18.7%) were found to be the most prevalent environm...

2016
Chen Jin Kai Huang Yajuan Yu Yue Zhang Arjen Y. Hoekstra

Beijing suffers from a severe water shortage. To find the key factors that impact the agricultural water footprint (WF) within Beijing to relieve the pressure on water resources, this study quantifies the agricultural WF within Beijing from 1980 to 2012 and examines the factors of population, urbanization level, GDP per capita, Engel coefficient, and total rural power using an extended stochast...

2010
Amartya Kumar Bhattacharya

Artificial groundwater recharge is a process by which the groundwater reservoir is augmented at a rate exceeding the augmentation rate under natural conditions of replenishment. In some parts of India, due to over-exploitation of groundwater, decline in groundwater levels resulting in shortage of supply of water, and intrusion of saline water in coastal areas have been observed. In such areas, ...

2012

The Yazd-Ardakan basin in Central Iran has two separated aquifers. The shallow unconfined aquifer is supplies 40 Qanats. The deep saturated confined aquifer is the main water storage. Due to over-withdrawal, water table has been decreasing during last 25 years. Recent study shows that the shortage of the aquifer is about 16 meters and land subsidence is 0.5 1.2 meters. Long deep cracks are foun...

2013
RAJENDRA SINGH

Shortage of irrigation water resources is leading to the use of domestic and industrial waste water in agriculture especially. In urban areas. Being contaminated by metals and various toxic chemicals these waste waters leads to the exposure of heavy metals and hazardous chemicals and the subsequent human health hazards through agriculture products and live stocks. Increasing cases of cancer and...

Journal: :Sustainability 2022

The intensity and the frequency of extreme drought are increasing worldwide. An elevated atmospheric CO2 concentration could counterbalance negative impacts water shortage; however, wheat genotypes show high variability in terms reactions. development root system is a key parameter abiotic stress resistance. In our study, biomass grain production, as well growth three winter-wheat varieties wer...

Journal: :Energy and Environmental Science 2022

An effective thermoelectricity–freshwater cogenerator using solar energy and scavenging has been proposed as a promising solution to water scarcity electricity shortage.

2013
Pan Zhang Jingtao Hu Wei Li Houbo Qi

Brackish water (BW) desalination is a primary path to relieve the shortage of water. As one of the BW desalination methods, reverse osmosis (RO) technology has advantage for both technology and process procedure. The expounding of this research studied or reviewed recent years, reverse osmosis membrane, energy recovery, new energy and application technology in BW desalination of RO at home and ...

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