Nuclear Physics and Atomic Energy

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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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Nucl. Phys. At. Energy 2020, volume 21, issue 3, pages 256-264.
Section: Radiobiology and Radioecology.
Received: 03.02.2020; Accepted: 09.07.2020; Published online: 16.12.2020.
PDF Full text (ua)
https://doi.org/10.15407/jnpae2020.03.256

90Sr and 137Cs inventories in the depots and biogenic fluxes of the typical forest stands in the Chernobyl exclusion zone

D. M. Holiaka1,*, S. E. Levchuk1, V. I. Yoschenko2, V. A. Kashparov1, L. V. Yoschenko1, M. A. Holiaka1, V. V. Pavliuchenko1, P. P. Diachuk1, R. M. Zadorozhniuk1, V. S. Morozova1

1National University of Life and Environmental Sciences of Ukraine, Kyiv, Ukraine
2Institute of Environmental Radioactivity at Fukushima University, Fukushima, Japan


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

Abstract: The paper reports results of the study of depots and biogenic fluxes of 90Sr and 137Cs in the typical coniferous (Scots pine) and deciduous (Silver birch) forest ecosystems of the Chernobyl Exclusion Zone during 2016 - 2018. Data on activity concentrations and shares of the total activity of the studied radionuclides in the components of aboveground and underground biomass and their vertical distributions by 10 cm layers of the soil profile up to a depth of 1 m are presented. The downward and upward fluxes of 90Sr and 137Cs activity (including the processes of their deposition as a result of growth and formation biomass) are calculated in annual terms. Significantly higher 90Sr mobility in elements of forest ecosystems than 137Cs is confirmed. The estimated flux values for the investigated forest areas indicate a gradual further increase in the share of these radionuclides in the aboveground biomass components (up to 0.9 %·year-1 from the total activity in forest ecosystems) owing to the increase of organic matter stocks.

Keywords: 90Sr, 137Cs, activity concentration, soil, biomass, Scots pine, Silver birch, stand, forest ecosystems.

References:

1. V. Yoschenko, T. Ohkubo, V. Kashparov. Radioactive contaminated forests in Fukushima and Chernobyl. Journal of Forest Research 23(1) (2018) 3. https://doi.org/10.1080/13416979.2017.1356681

2. L.M. Otreshko et al. 90Sr and 137Cs content in a wood along the southern fuel trace of Chernobyl radioactive fallout. Yaderna Fizyka ta Energetyka (Nucl. Phys. At. Energy) 16(2) (2015) 183. (Rus) https://doi.org/10.15407/jnpae2015.02.183

3. G.A. Grodzynska. Radionuclide contamination macromycetes. Visnyk Natsional'noyi Akademiyi Nauk Ukrayiny 6 (2017) 61. (Ukr) https://doi.org/10.15407/visn2017.06.061

4. V.P. Krasnov et al. 137Cs content in European blueberry (Vaccinium myrtillus L.) in forests of Ukrainian Polissia in different periods after the accident at ChNPP. Yaderna Fizyka ta Energetyka (Nucl. Phys. At. Energy) 19(4) (2018) 383. (Ukr) https://doi.org/10.15407/jnpae2018.04.383

5. Assessment of the Distribution of Radionuclides and Impact of Industrial Facilities in the Chornobyl Exclusion Zones. Final report. Under the GEF project "Conserving, Enhancing and Managing Carbon Stocks and Biodiversity in the Chornobyl Exclusion Zone" (Slavutych: Institute for Radiation Measurement and Development, 2018) 203 p. http://chornobyl-gef.com/wp-content/uploads/2018/05/Assesment-of-Distr.-Radioact.pdf

6. Y. Thiry, A. Albrecht, T. Tanaka. Development and assessment of a simple ecological model (TRIPS) for forests contaminated by radiocesium fallout. Journal of Environmental Radioactivity 190 - 191 (2018) 149. https://doi.org/10.1016/j.jenvrad.2018.05.009

7. Forest inventory sample plots. Establishing method. Standard of organization 02.02-37-476:2006 (Kyiv: Ministry of Agrarian Policy of Ukraine, 2006) 32 p. (Ukr)

8. Soil quality. Methods for sampling soil for radiation monitoring. Standard of organization 74.14-37-425:2006 (Kyiv: Ministry of Agrarian Policy of Ukraine, 2006) 15 p. (Ukr)

9. N.P. Anuchin. Forest Mensuration. 5-th ed., ext. (Moskva: Forest Industry, 1982) 550 p. (Rus)

10. Methodical Instructions for the Determination of Strontium-90 and Cesium-137 in Soils and Plants (Moskva: Central Research Institute of Agrochemical Service, 1985) 46 p. (Rus)

11. A.M. Bilous. Bioproductivity and Ecosystem Functions of Deciduous Softwood Forests within Ukrainian Polissia: Thesis of Doctor Agr. Science (Kyiv: National University of Life and Environmental Sciences of Ukraine, 2016) 423 p. (Ukr)

12. D.M. Holiaka. Formation of the average sample and estimation of stem components phytomass of Scots pine trees for determination of the 90Sr and 137Ñs contents. Naukovyy Visnyk UNFU Ukrayiny 27(6) (2017) 20. (Ukr) https://doi.org/10.15421/40270603

13. A.Z. Shvidenko et al. Tables and Models of Growth and Productivity of Forests of Major Forest Forming Species of Northern Eurasia (Standard and Reference Materials). 2-nd ed., suppl. (Moskva: Federal Agency of Forest Management of Russia, 2008) 886 p.

14. P. Vanninen et al. Effects of age and site quality on the distribution of biomass in Scots pine (Pinus sylvestris L.). Trees 10 (1996) 231. https://doi.org/10.1007/BF02185674

15. T. Johansson. Root Biomass Production in Young Birch Stands Planted at Four Spacings on Two Different Sites. Report 014 (Uppsala: Swedish University of Agricultural Sciences (SLU), Department of Energy and Technology, 2009) 31 p. https://pub.epsilon.slu.se/14078/7/johansson_t_170906.pdf

16. M. Hunziker et al. Biomass allometries and coarse root biomass distribution of mountain birch in southern Iceland. Icelandic Agricultural Sciences 27 (2014) 111. https://skemman.is/bitstream/1946/19813/1/Hunziker%20et%20al%202014.pdf

17. A.N. Perevolotsky, E.A. Goncharov, T.V. Perevolotskaya. Revisiting the modelling of radionuclide distribution in forest ecosystems. Radiation Biology. Radioecology 56(6) (2016) 655. (Rus) https://doi.org/10.7868/S0869803116060102

18. D.M. Holiaka et al. Vertical distribution of 90Sr in soil profiles and its uptake by Scots pine (Pinus sylvestris L.) wood growing within the Chernobyl exclusion zone. Yaderna Fizyka ta Energetyka (Nucl. Phys. At. Energy) 21(2) (2020) 157. (Ukr) https://doi.org/10.15407/jnpae2020.02.157

19. A.N. Perevolotskij. Distribution of 137Cs and 90Sr in Forest Biogeocenoses (Gomel’, RSRUE "Institute of Radiology", 2006) 255 p. (Rus)

20. A.I. Shcheglov. Biogeochemistry of Artificial Radionuclides in Forest Ecosystems (Moskva: Science, 2000) 268 p. (Rus) https://www.rfbr.ru/rffi/ru/books/o_28074