نتایج جستجو برای: lake urmia basin

تعداد نتایج: 97887  

2012

Based on the field investigation and long term remote sensing data, the dynamics of the alpine wetland in the river basin and their response to climate change were studied. Results showed the alpine wetlands accounted for 3.73% of total basin in 2010. Lake and river appeared an increasing trend in the past 30 years, with an increase of 34.36 % and 24.57%. However, swamp exhibited a tendency of ...

2011
Isaac W. S. Wong William G. Booty Phil Fong Sarah Hall

The Lake Winnipeg Basin Initiative was created as part of Canada’s Action Plan on clean water. Its focus is to deal with excessive lake inputs of nutrients from surface runoff and municipal wastewater. Understanding the dynamics of nutrient loading, the associated algal blooms and resulting changes in fish populations, beach closures, and ecosystem imbalance requires access to various sources o...

2015
Asghar Tofighi

1. Assistant Professor in Exercise Physiology, Department of Exercise Physiology, Faculty of Physical Educa on and Sport Science, Urmia University, Urmia, Iran. 2. PhD Student in Exercise Physiology, Department of Exercise Physiology, Faculty of Physical Educa on and Sport Science, Birjand University, Birjand, Iran. 3. M.A in Exercise Physiology, Department of Exercise Physiology, Faculty of Ph...

Journal: :تحقیقات جغرافیایی 0
نادر پروین نادر پروین دانشگاه پیام نور

â â â  many of environmental conditions are explainable, either directly or indirectly with regard to topographical changes in pressure levels of high atmosphere. thus, studying this subject is great importance. in this article, after determining the threshold of flood in catchment, altitudinal data of 500 hp level for 44 storms generating floods during (1370_1384) were processed using the fact...

2015
Zhiguo Li Kuangsheng Fan Lide Tian Benlin Shi Shuhong Zhang Jingjing Zhang Liping Zhu

Inland glacier and lake dynamics on the Tibetan Plateau (TP) and its surroundings over recent decades are good indicators of climate change and have a significant impact on the local water supply and ecosystem. The glacier and lake changes in Karakoram are quite different from those of the Himalayas. The mechanisms of the complex and regionally heterogeneous behavior of the glacier and lake cha...

2003
RICHARD P. FUTYMA T. C. Chamberlain G. K. Gilbert J. W. Goldthwait W. H. Hobbs F. Lever

A number of ancient shorelines formed by late-Pleistocene proglacial lakes have been found in eastern upper Michigan. These shorelines delimit several water planes, the uppermost of which is correlated with the Main Lake Algonquin stage. This correlation is based on the continuity of the highest water plane with Main Algonquin shorelines in Wisconsin and Ontario, the strength of the shoreline f...

ژورنال: اکوبیولوژی تالاب 2022
Asalpisheh, Zahra, Atashbar Kangarloei , Behrooz, Haghi Vayghan, Ali , Imani, Ahmad , Teymuri Nomandani, Sudabeh ,

Phytoplankton is one of the main components of wetlands, which plays a vital role in providing nutrients, oxygen for other organisms, stabilizing nitrogen and carbon dioxide. In the meantime, the current status of Lake Urmia highlights the need to conserve and protect wetlands related to these ecosystems and their living and non-living components. Therefore, this study was conducted to assist i...

2014
Elham AHMADI Seyed Ali POURBAKHSH Malahat AHMADI Alireza TALEBI

Elham AHMADI*, Seyed Ali POURBAKHSH, Malahat AHMADI, Alireza TALEBI Department of Microbiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran Department of Poultry Diseases, Razi Vaccine and Serum Research Institute, Karaj, Iran Department of Microbiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran Department of Clinical Sciences, Faculty of Veterinary Medicin...

Journal: :پژوهش های جغرافیای طبیعی 0
طیبه کیانی دانشجوی دکتری ژئومورفولوژی، دانشکدة علوم جغرافیایی و برنامه ریزی، دانشگاه اصفهان، ایران محمدحسین رامشت استاد ژئومورفولوژی، دانشکدة علوم جغرافیایی و برنامه ریزی، دانشگاه اصفهان، ایران امجد ملکی دانشیار ژئومورفولوژی، دانشکدة ادبیات و علوم انسانی، دانشگاه رازی، ایران فریده صفاکیش دانشجوی دکتری ژئومورفولوژی، دانشکدة علوم جغرافیایی، دانشگاه خوارزمی، ایران

introduction in spite of its short time period compared to the earth evolution history and formation, quaternary has had a significant effect on the final formation of the land form and vital resources. it is the final analysis of these levels and fully dependent sources to the earth genetic diseases and, above all, significant climate changes that have happened during this period; gavkhouni ba...

Journal: :پژوهش های جغرافیایی (منتشر نمی‏شود) 0
سیاوش شایان استادیار جغرافیا، دانشگاه تربیت مدرس مهدی جنتی کارشناس سنجش ازدور، سازمان فضایی ایران

abstract identification & supervision of fluctuations in physical ecosystems have a special place in optimum using of natural resources. urmia lake is the largest interior natural lake of iran which its potentials and ecosystem & environmental characteristics attracted researchers and environmental planners attention. fluctuations in area and perimeter of the lake attracted many attentions in r...

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