Cumulative effect of needle cast on Scots pine saplings
نویسندگان
چکیده
منابع مشابه
VOC emissions of Scots pine
Temperature and light dependence of the VOC emissions of Scots pine V. Tarvainen, H. Hakola, H. Hellén, J. Bäck, P. Hari, and M. Kulmala Finnish Meteorological Institute, Sahaajankatu 20 E, FI-00880 Helsinki, Finland Department of Forest Ecology, University of Helsinki, Helsinki, Finland Department of Physical Sciences, University of Helsinki, Helsinki, Finland Received: 10 August 2004 – Accept...
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Forest disturbances caused by pest insects are threatening ecosystem stability, sustainable forest management and economic return in boreal forests. Climate change and increased extreme weather patterns can magnify the intensity of forest disturbances, particularly at higher latitudes. Due to rapid responses to elevating temperatures, forest insect pests can flexibly change their survival, disp...
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this experimental study has been conducted to test the effect of oral presentation on the development of l2 learners grammar. but this oral presentation is not merely a deductive instruction of grammatical points, in this presentation two hypotheses of krashen (input and low filter hypotheses), stevicks viewpoints on grammar explanation and correction and widdowsons opinion on limited use of l1...
15 صفحه اولStudy of needle morphometric indices in Scots pine in the remote period after the Chernobyl accident
Biological effects in Scots pine populations experiencing chronic radiation exposure at doses up to 130 mGy per year as a result of the Chernobyl accident were studied in 2011 and 2013, using needle indices as endpoints. No relationships between the length, the mass of needles and the asymmetry in weight of paired needles and radiation exposure were revealed. The frequency of necrotic needles i...
متن کاملHydraulic adjustment of Scots pine across Europe.
* The variability of branch-level hydraulic properties was assessed across 12 Scots pine populations covering a wide range of environmental conditions, including some of the southernmost populations of the species. The aims were to relate this variability to differences in climate, and to study the potential tradeoffs between traits. * Traits measured included wood density, radial growth, xylem...
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ژورنال
عنوان ژورنال: Forestry Studies
سال: 2016
ISSN: 1736-8723
DOI: 10.1515/fsmu-2016-0007