نتایج جستجو برای: iranian forests

تعداد نتایج: 78978  

2016
Patricia Carignano Torres Carla Morsello Luke Parry Renata Pardini

Understanding the multiple ways people value forests is important, as individual values regarding nature have been shown to partly determine willingness to participate in conservation initiatives. As individual values are influenced by past experiences, the way people value forests may be related to the ecosystem services they use and receive. We here aim to investigate if people value forests ...

Journal: :جنگل و فرآورده های چوب 0
بیت الله محمودی استادیار گروه جنگلداری دانشکدة منابع طبیعی و علوم زمین دانشگاه شهرکرد، شهرکرد، ایران احمد بازگیر دانشجوی دکتری جنگلداری دانشکدة کشاورزی دانشگاه لرستان، خرم آباد، ایران جهانگیر فقهی دانشیار گروه جنگلداری و اقتصاد جنگل دانشکدة منابع طبیعی دانشگاه تهران، کرج، ایران فاطمه جعفری کارشناس ارشد مدیریت کشاورزی دانشکدة منابع طبیعی دانشگاه تهران، کرج، ایران

one of the indicators of management and sustainability control of forest resources is the definition deforestation and degradation types. these factors hazard quantitative and qualitative of the iranian forests. in this study with integrated approach, different forms of forest degradation identified in the forest areas with a reviews of library resources and then investigation the degree of sta...

Journal: :پژوهش های تولید گیاهی 0
جمیله نظری دانشجوی دانشگاه منابع طبیعی گرگان در رشته جنگلشناسی و اکولوژی جنگل وحیده پیام نور استادیار دانشکده علومجنگل. دانشگاه منابع طبیعی گرگان مهدی علیزاده استادیار دانشکده تولید گیاهی. دانشگاه علوم کشاورزی و منابع طبیعی گرگان کمال قاسمی بزدی استادیار موسسه پنبه کشور

birch (betula sp.) is considered as extinction species and its natural regeneration in iranian forests ‎is very slow. difficulties in regeneration as well as natural seed germination of birch tree besides ‎high levels of seed contaminations have justified the application in‏ ‏vitro culture with respect to its ‎conservation and genetic improvement. hence, the in vitro culture initiation using se...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2014
Guirui Yu Zhi Chen Shilong Piao Changhui Peng Philippe Ciais Qiufeng Wang Xuanran Li Xianjin Zhu

Temperate- and high-latitude forests have been shown to contribute a carbon sink in the Northern Hemisphere, but fewer studies have addressed the carbon balance of the subtropical forests. In the present study, we integrated eddy covariance observations established in the 1990s and 2000s to show that East Asian monsoon subtropical forests between 20 °N and 40 °N represent an average net ecosyst...

Journal: :Human reproduction 2013
Maziar Rahmani Madalene A Earp Fahimeh Ramezani Tehrani Mehran Ataee Jackson Wu Martin Treml Ramona Nudischer Sara P-Behnami John R B Perry Joanne M Murabito Fereidoun Azizi Angela Brooks-Wilson

STUDY QUESTION Do differences in heritable genetic factors explain some of the difference in age at natural menopause (ANM) among populations? SUMMARY ANSWER One single nucleotide polymorphism (SNP)-ANM association (rs16991615) detected in European women was replicated in Iranian women. WHAT IS KNOWN ALREADY Genetics plays an important role in ANM, and well-powered genome-wide association s...

Journal: :Western Journal of Medicine 2000

Journal: :Orient 2002

Efat Jafari, Gholam Abbas Ghanbarian Mostafa Assadi

The genus Calendula belongs to tribe Calenduleae, (Asteraceae family). Itmorphologically studied for the ongoing project of the flora of Iran. Based on the herbarium studies and field observation, this genus has been revised. The study was based on fresh material from field as well as herbarium specimens. All specimens existed in the herbarium of Research Institute of...

2016
Leila Ebrahimi Khalil-Berdi Fotuhifar Mohammad Javan Nikkhah Mohammad-Reza Naghavi Niranjan Baisakh

The population genetic structure of 278 Venturia inaequalis isolates, collected from different apple cultivars of eighteen different provinces in Iran, was investigated using 22 polymorphic microsatellite markers. Analysis of molecular variation, Bayesian clustering and Nei's genetic distance analyses based on 88 microsatellite alleles indicated substantial levels of gene flow among the collect...

2015
Esmat Mehrabi Sepideh Hajian Masoomeh Simbar Mohammad Houshyari Farid Zayeri

INTRODUCTION Cancer diagnosis is an extremely stressful experience that has a profound impact on a patient's life. Cancer related perceived stress and complications may lead to the experience of positive psychological changes and post-traumatic growth (PTG). Since there is lack of qualitative research assessing the experience of PTG in Iranian women with breast cancer, this study aims to invest...

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