نتایج جستجو برای: arasbaran

تعداد نتایج: 98  

Journal: : 2021

Ecological Role of Altitude on Quantitative Characteristics Caucasian Oak (Quercus macranthera Fisch. & C.A.Mey. ex Hohen.) Stands in Arasbaran Forest

Journal: : 2022

Ecological Relationships of Slope and Elevation with Rowan (Sorbus aucuparia L.) in Arasbaran Forests

Journal: :Engineering Optimization 2022

This article proposes a new formulation for the maximum leaf spanning tree problem (MLSTP) using network flow concepts to ensure graph connectivity of problem’s solutions. Since MLSTP is NP hard, genetic algorithm (MGA) also developed solve large-scale instances. The proposed optimally solved 37 out 41 instances existing benchmarks, comparable with results available formulations in literature. ...

Journal: رستنیها 2010
M. ABBASI, M. DONYADOOST-CHALAN S. REZAEE

Arasbaran is one of the most important protected regions in Iran located in NW of the country and east of E Azarbaijan Province. Several reports have been published on the mycobiota of this region however there is only few records about rust fungi of Arasbaran. Our research on rust fungi of Arasbaran region get started since 2006. During this study, several rust taxa collected and identified fr...

Journal: :پژوهش های جغرافیایی (منتشر نمی‏شود) 0
مجید رضایی بنفشه اسـتادیـار گروه جغرافیای طبیعی، دانشگاه تبریز هاشم رستم زاده دانشجوی دکتری جغرافیای طبیعی، دانشگاه تبریز بختیار فیضی زاده کارشناسی ارشد سنجش از دور و سیستم اطلاعات جغرافیایی

this research has been carried out with the aim of the determination of the land-use changes of the forests in the protected area of arasbaran. the determination of the changing points and the factors influencing these changes by the use of gis and remote sensing are the main aims of this research. accordingly, the satellite pictures pertaining to the years 1987 and 2005 along with other necess...

ژورنال: :مجله گیاهشناسی ایران 2002
فاطمه زرین کمر عادل جلیلی بهنام حمزه یونس عصری جی هودگسون

ساختار تشریحی برگ در 7 گونه از جنس carex (تیره جگن) از منطقه حفاظت شده ارسباران مطالعه شد. صفات جالبی از ساختمان آناتومی برگ شامل ویژگی سلولهای اپیدرم، اندیس روزنه و مشخصات بافتهای مختلف در برش عرضی بررسی و تحلیل شد. این مطالعه اطلاعات جامعی از آناتومی برگ در این جنس ارائه می دهد. علاوه بر آن، این بررسی گویای توانایی سازگاری جنس (carex) با محیط طبیعی مرطوب و تالابی خود می باشد. از جمله نکات ج...

Journal: رستنیها 2009

In this paper, nine species of bolete fungi belonging to genera Boletus, Leccinum, Suillus and Xerocomus are reported from Arasbaran (E. Azarbaijan Province, N.W. Iran).From identified species Boletus edulis, B. erythropus, B. fechtneri, B. fragrans and X. ferrugineus are reported from Arasbaran as new for Iran.B. pulverulentus, L. pseudoscabrum, S. collinitus and S. granulatus have already bee...

Journal: رستنیها 2008

Due to the importance of the Arasbaran forest (E. Azarbaijan, N.W. Iran) as a biosphere preserve and having a rich flora and fauna, macrofungi flora of Arasbaran region, were studied from 2003. This is the first in a series of publications on floristic studies of macrofungi of Arasbaran forests. In this paper, species of the genus Cortinarius, subgenus Myxacium are studied.The genus Cortinarius...

2013
M. Mojarrab A. Delazar S. Esnaashari F. Heshmati Afshar

The essential oils of the aerial parts of A. armeniaca and A. incana, collected from Arasbaran area (East Azarbaijan province, Iran) were extracted by hydrodistillation and analyzed by GC-MS. In total, 16 and 40 constituents were identified and quantified in the oils of A. armeniaca and A. incana representing 80.5% and 84.6% of the oils, respectively. The essential oil of A. armeniaca was mainl...

درویشی, آصف, سفیانیان, علیرضا , فاخران, سیما , قربانی, مهدی ,

Large scale land use/cover changes and habitat fragmentation have been associated with the decline of many wildlife populations in ecological sensitive regions. The main goal of this study was to quantify the spatial pattern changes in Caucasian Black Grouse habitat in Arasbaran Biosphere Reserve, Northwest of Iran in a period of 24 years (1987–2011). Caucasian black grouse (Tetrao mlokosiewicz...

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