نتایج جستجو برای: shrubs

تعداد نتایج: 3863  

Journal: :جنگل و فرآورده های چوب 0
محمد امامی نسب دانشجوی کارشناسی ارشد بیولوژی و آناتومی چوب، دانشکدة منابع طبیعی، دانشگاه تهران، کرج، ایران رضا اولادی استادیار گروه علوم و صنایع چوب و کاغذ، دانشکدة منابع طبیعی، دانشگاه تهران، کرج، ایران

to understand the compatibility of xylem with dry climates, wood anatomy similarities anddifferences of four shrubs were investigated in dry and cold region of sarab (azarbaijan sharghiprovince). these shrubs were: pteropyrum olivieri, rosa canina, tamarix gallica, and rhamnuspallasii, while the wood anatomy of pteropyrum sp. is reported for the first time, in this research.after preparing micr...

ژورنال: :نامه انجمن حشره شناسی ایران 0
الهام انتظاری دانشگاه فردوسی مشهد حسین صادقی نامقی هیئت علمی غلامحسین مروج هیئت علمی

during the faunistic survey of aphid species associated with ornamental shrubs in the urban green spaces of mashhad, the capital city of khorasan-razavi province of iran, in 2015, specimens of the species appendiseta robiniae (gillette, 1907) were collected from a colony on vitex agnus-castus. this aphid species is reported here for the first time from iran.

2003
Richard Essery Douglas B. Clark

Improved representations of snow processes in vegetation canopies and snow hydrology are implemented in the Met Office Surface Exchange Scheme 2 (MOSES 2) land-surface model. Snow falling on forests is partitioned between interception and throughfall; the intercepted snow is removed by sublimation, melt and unloading. A reduction in sublimation of wind-blown snow through trapping by shrubs is s...

Journal: :IOP conference series 2021

Abstract In the course of research, authors analyzed results introduction shrub plants different taxonomic groups in conditions Central Black Earth Region. Most representatives collections under consideration (a collection deciduous shrubs, a ornamental coniferous shrubs) showed significant adaptive capabilities region consideration. Recommendations on possibility using introduced shrubs green ...

Journal: :محیط زیست طبیعی 0
سید حمید متین خواه دانشیار دانشکده منابع طبیعی دانشگاه صنعتی اصفهان مینا اورنگی فارغ التحصیل مرتع و آبخیزداری دانشکده منابع طبیعی دانشگاه صنعتی اصفهان

knowledge of the physiological characteristic of tree and shrubs species and their adaptability to environmental factors is an important issue in species selecting for tree planting projects in water scarcity regions. therefore, this investigation try to examine the chlorophyll content and stomatal conductivity in various species of trees and shrubs. the effects of environmental factors are als...

Journal: :نامه انجمن حشره شناسی ایران 0
سلمی سید ابراهیمی دانشگاه آزاد اسلامی، واحد شیراز، باشگاه پژوهشگران و نخبگان جوان، شیراز جورج جاپوشویلی مرکز تحقیقات حشره شناسی و مبارزه ی بیولوژیک، دانشگاه ایالتی ایلیا، تفلیس، گرجستان عباس محمدی خرم آبادی دانشگاه شیراز، دانشکده ی کشاورزی و منابع طبیعی داراب، بخش تولیدات گیاهی، داراب شهرام حسامی دانشگاه آزاد اسلامی واحد شیراز، گروه گیاه پزشکی، شیراز

metaphycus bogdanovikatkovi myartseva is recorded here for the first time from iran. this species is reared on rhizopulvinaria sp. (hem.: coccidae) on wild almond shrubs in darab region, fars province of iran.

Journal: :Journal of environmental management 2013
Rafael Fernandez-Cañero Tobias Emilsson Carolina Fernandez-Barba Miguel Ángel Herrera Machuca

This study investigates people's preconceptions of green roofs and their visual preference for different green roof design alternatives in relation to behavioral, social and demographical variables. The investigation was performed as a visual preference study using digital images created to represent eight different alternatives: gravel roof, extensive green roof with Sedums not in flower, exte...

2009
Ronald G. Blom

Introduction Outcomes attributable to the research funded through the 2005 NCPPT grant can be summarized as follows: 1) Protocols for the detection of archaeological sites through the analysis of commercially available synthetic aperture radar (SAR) and multispectral images. Previously existing protocols for site detection through image analysis had utilized images generated from synthetic aper...

2008
Clive Brasier

Introduction For a scientist, my title may seem a little sensationalist in tone. This is deliberate to draw attention to my issue. And here’s the issue. About six years ago the previously unknown invasive pathogen P. ramorum sp. nov. was found spreading on trees and shrubs in North America and Europe. Almost simultaneously in the U.K. we found another previously unknown invasive Phytophthora on...

Journal: :The New phytologist 2006
Theresa A McHugh Catherine A Gehring

Few studies have examined how below-ground interactions among plants affect the abundance and community composition of symbiotic mycorrhizal fungi. Here, we combined observations during drought with a removal experiment to examine the effects of below-ground interactions with arbuscular mycorrhizal (AM) shrubs on the growth of pinyon pines (Pinus edulis), and the abundance and community composi...

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