Ядерна фізика та енергетика Nuclear Physics and Atomic Energy   ISSN: 1818-331X (Print), 2074-0565 (Online)   Publisher: Institute for Nuclear Research of the National Academy of Sciences of Ukraine   Languages: Ukrainian, English, Russian   Periodicity: 4 times per year   Open access peer reviewed journal

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V. P. Krasnov^1,*, V. V. Melnik¹, T. V. Kurbet¹, O. V. Zhukovsky², O. V. Zborovska², O. O. Orlov<sup>2

1</sup> State University "Zhytomyr Polytechnic", Zhytomyr, Ukraine
² G. M. Vysotsky Poliskiy Branch of Ukrainian Research Institute of Forestry and Forest Melioration, Dovzhyk, Zhytomyr region, Ukraine

^*Corresponding author. E-mail address: volodkrasnov@gmail.com

Abstract: Results of many years of the research on ¹³⁷Cs accumulation of Lily of the valley (Convallaria majalis L.) in the above-ground phytomass in wet sugrudy of the mixed forests of Zhytomyr Polissia are presented. The radionuclide specific activity in Lily of the valley decreased by 11.1 - 17.3 times during the observation period (1991 - 2018). The increase of this indicator was revealed in certain years and periods, which is possibly due to weather conditions of particular year and cyclic migration of ¹³⁷Cs in forest biogeocoenosis. The dependence between the density of ¹³⁷Cs radioactive contamination of soil and the content of radionuclide in grass as well as in common inflorescences of Lily of the valley is revealed.

Keywords: radionuclides, Lily of the valley, transfer factor, radioactive contamination of soil, specific activity of radionuclide, sod-podzolic soils.

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