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   Periodicity: 4 times per year   Open access peer reviewed journal

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O. V. Zhukovskyi¹, V. P. Krasnov^2,*, I. G. Patseva², І. D. Ivanyuk<sup>3

1</sup> Poliskyi Branch of the Ukrainian Research Institute of Forestry and Forest Melioration named after G. M. Vysotsky, Dovzhyk, Zhytomyr Region, Ukraine
² Zhytomyr Polytechnic State University, Zhytomyr, Ukraine
³ Malyn Vocational College, Gamarnya, Zhytomyr Region, Ukraine

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

Abstract: This study investigates the current distribution of ¹³⁷Cs in the tissues and organs of black alder (Alnus glutinosa (L.) Gaertn.) growing under different forest site conditions in the Polissia region of Ukraine. The most intensive uptake of the radionuclide into various parts of the trunk and crown was observed in wet, relatively fertile forest sites. The aggregated transfer factor of ¹³⁷Cs increased from moist to wet, relatively fertile conditions, with values changing as follows: from 0.5 to 5.2 m²·kg^-1·10^-3 in leaves, from 1.7 to 8.3 m²·kg^-1·10^-3 in one-year-old shoots, from 1.0 to 4.9 m²·kg^-1·10^-3 in two-year-old shoots, from 0.7 to 3.9 m²·kg^-1·10^-3 in fine branches, from 0.5 to 2.9 m²·kg^-1·10^-3 in coarse branches, from 2.1 to 10.2 m²·kg^-1·10^-3 in fruits, and from 2.5 to 14.1 m²·kg^-1·10^-3 in male inflorescences. Statistically significant differences in aggregated transfer factors were observed among nearly all crown components across moist, damp, and wet site conditions. Additionally, a slight increase in the ¹³⁷Cs content was recorded from the base to the top of the crown in wet, relatively fertile sites.

Keywords: Alnus glutinosa (L.) Gaerth., stands, site moisture regime, radionuclides, cesium, activity concentration, density of contamination, aggregated transfer factor.

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