نتایج جستجو برای: iranian forests
تعداد نتایج: 78978 فیلتر نتایج به سال:
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 ...
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...
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...
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...
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...
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...
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...
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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