Comparing the radioactive contamination of marsh Labrador tea (Ledum palustre L.) Over different periods since Chernobyl accident

Authors

DOI:

https://doi.org/10.15587/1729-4061.2020.211933

Keywords:

specific activity of 137Cs, radioactive contamination, migration of radionuclides, phytomass, forest ecosystems

Abstract

Radioactive contamination of the above-ground phytomass of marsh Labrador tea (Ledum palustre L.) in different periods after the Chernobyl accident was studied. Marsh Labrador tea is widely used in official and folk medicine. The studied species grows in over-moistened pine (less mixed) forests and open oligotrophic and mesotrophic marshes. It was found that in the first four years since the beginning of observations (1991), the magnitude of the specific activity of 137Cs in above-ground vegetative phytomass of marsh Labrador tea, depending on a permanent sample area (PSA), decreased by 1.2–1.4 times. After 10 years, it decreased by 1.6–1.7 times, after 16 years by 1.9–2.1 times, after 21 years by 2.7–3.1 times, and after 27 years by 3.1–6.5 times. An increase in the magnitude of transitions factors was also observed on all PSA over time. Thus, the minimal increase within 1991–2018 was recorded in PSA 11 – by 1.2 times and on PSA 13 – by 1.4 times. The maximum decrease in the magnitude of transition coefficient was observed in PSA 16 – by 2.7 times, in PSA 15 – by 3.0 times, and in PSA 18 – by 2.0 times. It was found that marsh Labrador tea belongs to the group of plants that are characterized by the high content of 137Cs in the above-ground vegetative phytomass. Within the observation period (1991–2018), this content significantly exceeds the admissible levels of radionuclide content in plant medicinal raw materials that are used for manufacturing medical preparations. In the PSA with maximum magnitudes of soil contamination density (400.5±50.73 kBk·m-2) this excess made up 158.4 times in 1991, and 33.7 times (166.9±23.56 kBk·m-2) in 2018. For 27 years of observations, there has been a decrease in the density of radioactive soil contamination by 2.1–2.7 times, which is due to radionuclide decomposition, its vertical migration in the soil, and towards the components of forest ecosystems

Author Biographies

Volodymyr Krasnov, Zhytomyr Polytechnic State University Chudnivska str., 103, Zhytomyr, Ukraine, 10005

Doctor of Agricultural Sciences, Professor

Department of Ecology

Oleksandr Orlov, Poliskiy Branch of Ukrainian Research Institute of Forestry and Agro-Forest Melioration named after G. M. Vysotsky Neskorenykh str., 2, Dovzhyk vil., Zhytomyr reg., Ukraine, 10004

PhD, Senior Researcher

Laboratory of Radiation Ecology of the Forest

Oleh Zhukovskyi, Poliskiy Branch of Ukrainian Research Institute of Forestry and Agro-Forest Melioration named after G. M. Vysotsky Neskorenykh str., 2, Dovzhyk vil., Zhytomyr reg., Ukraine, 10004

Researcher

Laboratory of Radiation Ecology of the Forest

Mariia Korbut, Zhytomyr Polytechnic State University Chudnivska str., 103, Zhytomyr, Ukraine, 10005

PhD, Associate Professor

Department of Ecology

Iryna Davydova, Zhytomyr Polytechnic State University Chudnivska str., 103, Zhytomyr, Ukraine, 10005

PhD, Associate Professor

Department of Ecology

Viktoriia Melnyk, Zhytomyr Polytechnic State University Chudnivska str., 103, Zhytomyr, Ukraine, 10005

Assistant

Department of Ecology

Olha Zborovska, Poliskiy Branch of Ukrainian Research Institute of Forestry and Agro-Forest Melioration named after G. M. Vysotsky Neskorenykh str., 2, Dovzhyk, Zhytomyr region, Ukraine, 10004

PhD, Senior Researcher

Department of Radiation Ecology of the Forest

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Published

2020-10-31

How to Cite

Krasnov, V., Orlov, O., Zhukovskyi, O., Korbut, M., Davydova, I., Melnyk, V., & Zborovska, O. (2020). Comparing the radioactive contamination of marsh Labrador tea (Ledum palustre L.) Over different periods since Chernobyl accident. Eastern-European Journal of Enterprise Technologies, 5(10 (107), 35–43. https://doi.org/10.15587/1729-4061.2020.211933

Issue

Vol. 5 No. 10 (107) (2020): Ecology

Section

Ecology

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Copyright (c) 2020 Volodymyr Krasnov, Oleksandr Orlov, Oleh Zhukovskyi, Mariia Korbut, Iryna Davydova, Viktoriia Melnyk, Olha Zborovska

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