نتایج جستجو برای: hornbeam and ironwood.

تعداد نتایج: 16827235  

Tree marking can cause changes in forest. This study aimed to assess tree marking operation and to predict its effect on stand structure of Persian ironwood-hornbeam stands at Bahramnia forestry plan, north of Iran. Therefore 98 trees that were marked in compartment 9 of the mentioned forest in 2017 based on selection system and according to the recent laws of Forests, Range and Watershed Manag...

Journal: :محیط زیست طبیعی 0
احسان عبدی استادیار گروه جنگلداری و اقتصاد جنگل، دانشکده منابع طبیعی، دانشگاه تهران، ایران باریس مجنونیان استاد گروه جنگلداری و اقتصاد جنگل، دانشکده منابع طبیعی، دانشگاه تهران حسن رحیمی استاد گروه آبیاری، دانشکده مهندسی آب و خاک، دانشگاه تهران محمود زبیری استاد گروه جنگلداری و اقتصاد جنگل، دانشکده منابع طبیعی، دانشگاه تهران قاسم حبیبی بی بالانی دانشیار دانشگاه آزاد اسلامی واحد شبستر

effects of plant roots on increasing soil shear strength depend on root tensile strength. thus, determination of root tensile strength can provide the necessary data for analyzing root-soil relations. tensile strength of plant roots varied in a wide range and have been reported from thousands to millions of mpa. the main objective of this study was to assess inter-species variations of root ten...

Journal: :Value in health : the journal of the International Society for Pharmacoeconomics and Outcomes Research 2014
J J Stephenson J L Buono W M Spalding Q Cai H Tan R T Carson J A Doshi

Forest Research Institute, Inc., a subsidiary of Actavis plc, and Ironwood Pharmaceuticals, Inc., were involved in the study design; collection, analysis, and interpretation of data; and decision to submit these data for presentation. Study was sponsored by Forest Research Institute, Inc., a subsidiary of Actavis plc, and Ironwood Pharmaceuticals, Inc. Funding for poster development was provide...

Journal: :CoRR 2016
Iris Anshel Derek Atkins Dorian Goldfeld Paul E. Gunnells

Number theoretic public key solutions are subject to various quantum attacks making them less attractive for longer term use. Certain group theoretic constructs show promise in providing quantum-resistant cryptographic primitives. We introduce a new protocol called a Meta Key Agreement and Authentication Protocol (MKAAP) that has some characteristics of a public key solution and some of a share...

2016
Tomasz Durak Roma Durak

A significant loss of biodiversity resulting from human activity has caused biotic homogenisation to become the dominant process shaping forest communities. In this paper, we present a rare case of biotic differentiation in European temperate deciduous forest herb layer vegetation. The process is occurring in nutrient poor oak-hornbeam forests in mountain areas (Polish Eastern Carpathians, Cent...

2016
YAHYA KOOCH SEYED MOHSEN HOSSEINI SEYED MOHAMMAD HOJJATI ASGHAR FALLAH

Kooch Y, SM Hosseini, Hojjati SM, Fallah A. 2013. Variability of soil physical indicators imposed by beech and hornbeam individual trees in a local scale. Biodiversitas 14: 25-30. The objective of our study was to determine if soil physical indicators could be related to the influence of the individual trees in stands of mixed species growing on steep slopes in the Hyrcanian forests of Iran. Re...

2012
Karel Tajovský Jan Hošek Jeňýk Hofmeister Jolanta Wytwer

Terrestrial isopods were collected in 13 forest fragments differing in area (within the range of 0.1 and 254.5 ha), shape and composition of forest vegetation (thermophilous oak, mesophilous oak-hornbeam, thermophilous oak-hornbeam, acidophilous oak, basiphilous oak, beech oak-hornbeam, moist mixed deciduous forest, plantations of deciduous and coniferous trees), all situated in the Český kras ...

Journal: :Artvin Çoruh Üniversitesi Orman Fakültesi Dergisi 2021

This study aims to determine some morphological characteristics of two-year-old common hornbeam (Carpinus betulus L.) and oriental orientalis Mill.) seedling the quality classes seedlings according Turkish Standards Institute’s (TSI) standards sturdiness quotient values. As a material, seedlings, grown from seed obtained three different altitudes as lower (0-400 m), mid (400-800 m) upper (800-1...

Journal: :Applied and environmental microbiology 2004
Evelyn Hackl Sophie Zechmeister-Boltenstern Levente Bodrossy Angela Sessitsch

The diversity and composition of soil bacterial communities were compared among six Austrian natural forests, including oak-hornbeam, spruce-fir-beech, and Austrian pine forests, using terminal restriction fragment length polymorphism (T-RFLP, or TRF) analysis and sequence analysis of 16S rRNA genes. The forests studied differ greatly in soil chemical characteristics, microbial biomass, and nut...

2013
Seyed Armin Hashemi

Vegetation phenology, as used and studied the related studies, refers to the relationship between climate and periodic development of photosynthetic biomass. selected 15 Hornbeam plots (Carpinus betulus) from study area in a mountainous region from 520m to 1310m above sea level. Ground observations of hornbeam tree growth process from January to December 2004 in 15 day intervals were performed ...

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