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EN
As shown by studies, radionuclides are present not only in green plants but also in fungi. They uptake them via mycelium and also through the entire body surface, accumulating them in fructifications. The Department of Radiological Protection of the Sanitary and Epidemiological Service at Płock found that caesium content in 5 species of edible fungi in Poland was in 1986 slightly higher than that found at the same time in Germany and three times less than concentrations found in Austria.
PL
Jak wykazały badania, radionuklidy zawarte są nie tylko w roślinach zielonych, ale również w grzybach. Pobierają je zarówno z gleby za pośrednictwem grzybni, jak też bezpośrednio całą powierzchnią, gromadząc w owocnikach. Oddział Ochrony Radiologicznej Sanepidu w Płocku, stwierdził, że zawartość radionuklidów cezu w 5 gatunkach grzybów jadalnych w Polsce była w 1986 roku nieco wyższa od stwierdzonej w tym samym roku w RFN i trzykrotnie niższa od średniej wartości w Austrii.
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tom 163
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nr 12
EN
he paper aims at assessing the impact of meteorological conditions on the start of the growing season (SOS) over forests in north−eastern Poland. The main objective was to study which, and if so to what extent, the meteorological parameters can describe the changes of the onset of vegetation in broadleaved forests. Study area encompasses forest complexes located in north−eastern Poland, which are under the influence of maritime and continental climate characterized by a shorter vegetation period and large temperature fluctuations. In this study forest mask containing only pixels with 50% cover of broadleaved forests defined by CLC2012 was applied. The time−series of satellite images derived from VEGETATION mission were applied for determining the start of the growing season. 10−day composites of Normalized Difference Vegetation Index (NDVI) from 1999 to 2016, derived at 1 km pixel resolution were filtered with double logistic function in order to determine the SOS. The meteorological parameters such as maximum air temperature, total precipitation and surface solar radiation derived from field measurements one month before the start of the growing season were taken into account. The Pearson correlation results proved that only maximum air temperature was related to the onset of the growing season. The strength of the relations depended on the dominant trees recognized within the forest area. There were no statistically significant relations with the precipitation and solar surface radiation which could be explained by frequent clouds during the month before the SOS and not observed unfavorable conditions that could have impacted on the changes of the growing season in forests.
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