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

Full text (ua)

D. M. Holiaka^*, S. E. Levchuk, V. A. Kashparov, M. A. Holiaka, L. V. Yoschenko, L. N. Otreshko, O. V. Kosarchuk, N. M. Lazarev

Ukrainian Institute of Agricultural Radiology, NULES of Ukraine, Kyiv, Ukraine

^*Corresponding author. E-mail address: holiaka@nubip.edu.ua

Abstract: Statistical and graphical interpretation of ⁹⁰Sr vertical distributions in soil profiles up to a depth of 1.0 m was presented based on the study of the typical Scots pine stands forest at 14 experimental sites within the Chernobyl exclusion zone. Significant differences were found between ⁹⁰Sr activity distribution in soil profiles collected at different sites. The part of ⁹⁰Sr activity below of a depth of 30 cm varied from 15 to 71 %. ⁹⁰Sr transfer factors from soil to anatomical structures of the stem wood were estimated based on values of soil contamination density, which were calculated for the depth of 0.3 and 1.0 m. The statistically significant correlation between the transfer factors of ⁹⁰Sr to stem wood (heartwood, sapwood) and its vertical distributions in soil profiles have not been observed. Among the forest inventory parameters for pine stands only the average diameter of trees significantly correlated with ⁹⁰Sr transfer factors to stem wood.

Keywords: ⁹⁰Sr content, activity concentration, transfer factor, soil profile, heartwood, sapwood, forest inventory parameters, pine stand, forest ecosystems.

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