Long-term effect of fertilization on137Cs concentration in Scots pine needles
نویسندگان
چکیده
منابع مشابه
Effects of foliar potassium concentration on morphology, ultrastructure and polyamine concentrations of Scots pine needles.
We examined the effects of three foliar potassium concentrations (high, intermediate and low) on the morphology, ultrastructure and polyamine concentrations of current-year and 1- and 2-year-old needles of 30-year-old Scots pine (Pinus sylvestris L.) trees. Foliar K concentration had only a slight effect on needle morphology. The sclerenchyma cell walls were thinner, the xylem area was larger, ...
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The study was aimed at the quantitative evaluation of the temporal and spatial partitioning of non-structural carbohydrates and needle biomass in a canopy of Scots pine (Pinus sylvestris L.) growing in a Myrtillus site type forest stand (predominant in Estonia). The tree canopy was divided into ten equal layers and the material for the spatial partitioning of the investigated characteristics wa...
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which is involved in lignification of cell walls (Dean and Eriksson, 1992), defence reactions against microbial infecExtracellular superoxide dismutase was found in extrations (Levine et al., 1994) and cross-linking of structural xylematic bark tissues and seedlings of Pinus sylproteins of the cell wall (Bradley et al., 1992). Its generavestris L. The isozymes were partially purified by tion in...
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از گذشته تا کنون، تحقیقات بسیاری صورت گرفته است که همگی به گونه ای بر مثمر ثمر بودن استفاده از استراتژی های یادگیری لغت در یک زبان بیگانه اذعان داشته اند. این تحقیق به بررسی تاثیر دو روش مختلف آموزش واژگان انگلیسی (کلیدی و بافتی) بر تلفظ و دانش لغوی فراگیران ایرانی زیر متوسط زبان انگلیسی و بر ماندگاری آن در حافظه می پردازد. به این منظور، تعداد شصت نفر از زبان آموزان ایرانی هشت تا چهارده ساله با...
15 صفحه اولLogging residue removal after thinning in boreal forests: long-term impact on the nutrient status of Norway spruce and Scots pine needles.
The aim of this study was to compare how conventional stem harvesting (CH) and whole-tree harvesting (WTH) in the first, and in some cases also in the second, thinning affect the needle nutrient status of Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) Karst.) stands in Finland. A series of 12 long-term field experiments was studied. The experiments were established during ...
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ژورنال
عنوان ژورنال: Radioprotection
سال: 2011
ISSN: 0033-8451,1769-700X
DOI: 10.1051/radiopro/20116663s