نتایج جستجو برای: depletion of water resources

تعداد نتایج: 21232585  

2013
Yu Wang Qi Feng Lijuan Chen Tengfei Yu

The Ecological Water Transfer and Rehabilitation Project in the arid inland area of northwest China is an important measure in restoring a deteriorated ecosystem. However, the sustainability of the project is affected by many socio-economic factors. This article examines the attitudes of the local populace toward the project, its impact on the livelihood of the people, and the positive effects ...

2012
A. J. Wiltshire

Introduction Conclusions References

Journal: :Ground water 2009
Vicki Kretsinger Grabert

Scientists and engineers understand and communicate hydrologic concepts with the one-word or two-word form of ‘‘groundwater’’ or ‘‘ground water,’’ with care toward consistency in their usage. Both forms certainly mean the same thing. Scientists and engineers also want to improve the public’s scientific understanding of water resources to ensure their future quality and availability. Language pr...

2012
Martha C. Anderson Richard G. Allen Anthony Morse William P. Kustas

2015
Qiting Zuo Runfang Jin Junxia Ma Guotao Cui

Harmony issues are widespread in human society and nature. To analyze these issues, harmony theory has been proposed as the main theoretical approach for the study of interpersonal relationships and relationships between humans and nature. Therefore, it is of great importance to study harmony theory. After briefly introducing the basic concepts of harmony theory, this paper expounds the five el...

2017
Sihan Zhao Hongchang Hu Fuqiang Tian Qiang Tie Lixin Wang Yaling Liu Chunxiang Shi

Stable isotopes in water (e.g., δ2H and δ18O) are important indicators of hydrological and ecological patterns and processes. Tap water can reflect integrated features of regional hydrological processes and human activities. China is a large country with significant meteorological and geographical variations. This report presents the first national-scale survey of Stable Isotopes in Tap Water (...

Journal: :Journal of environmental quality 2012
P A Chambers J M Culp E S Roberts M Bowerman

Global increases in consumption of chemical nutrients, application of pesticides, and water withdrawal to enhance agricultural yield have resulted in degraded water quality and reduced water availability. Efforts to safeguard or improve environmental conditions of agroecosystems have usually focused on managing on-farm activities to reduce materials loss and conserve habitat. Another management...

Journal: :مدیریت آب و آبیاری 0
مینا عبدالهی دانشجوی کارشناسی ارشد زراعت، دانشکدۀ کشاورزی، دانشگاه شاهد، تهران – ایران سعیده ملکی فراهانی استادیار گروه زراعت و اصلاح نباتات، دانشکدۀ علوم کشاورزی دانشگاه شاهد، تهران - ایران محمد حسین فتوکیان عضو هیأت علمی مرکز تحقیقات گیاهان دارویی دانشگاه شاهد، تهران – ایران. دانشیار گروه زراعت و اصلاح نباتات، دانشکدۀ علوم کشاورزی دانشگاه شاهد، تهران - ایران. عبدالله حسن زاده قورت تپه استادیار گروه زیست شناسی، دانشکدۀ علوم، دانشگاه ارومیه، ارومیه – ایران.

to evaluate the effect of water stress on yield and water use efficiency (wue) of lallemantia sp, an experiment was conducted as split plot factorial in randomized complete block design with three replications in the field of medicinal plants research center of shahed university, tehran in 1390-91. the first factor was irrigation system including 40 and 60 percent depletion of available soil wa...

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...

2005
Rakesh Kumar R. D. Singh K. D. Sharma

Water resources of a country constitute one of its vital assets. India receives annual precipitation of about 4000 km. The rainfall in India shows very high spatial and temporal variability and paradox of the situation is that Mousinram near Cherrapunji, which receives the highest rainfall in the world, also suffers from a shortage of water during the non-rainy season, almost every year. The to...

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