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Information × Registration Number 0222U001084, 0121U111411 , R & D reports Title Cellulose-destroying activity of soil microflora in Ukrainian Polissya under radioactive contamination and its participation in biological soil formation processes (including pyrogenically transformed soils) popup.stage_title Head Lazariev Mykola M., Кандидат біологічних наук Registration Date 23-01-2022 Organization National University of Life and Environmental Sciences of Ukraine popup.description2  The aim of research – to study of the cellulose-destroying microflora of radionuclide contaminated soils of the Ukrainian Polissya and the access of their soil-forming activity. The object of research – patterns of changes in the functional activity of cellulosedestroying microflora in soil with different levels of radionuclide contamination. The subject of research - parameters of functional activity of cellulose-destroying microflora of soils contaminated with radionuclides. Research methods - spectrometric, radiochemical analysis, microbiological, agrochemical, and statistical analysis. Based on the results of the project, for the first time on the radionuclide-contaminated territory, the worldstandard Tea Bag Index (TBI) method has been used to determine the rate of organic matter decomposition. TBI has been tested for various ecosystems in more than 2,000 locations around the world and allows us to compare results with global achievements. The absorbed dose rate ranging from 0.2 μGy/h to 1.6 μGy/h for soil microorganisms was determined in the zone of unconditional (compulsory) resettlement based on a thorough examination of the radionuclide contamination conditions. The value of the formed doses for the observations period (incubation time c. 90 days) ranged from 0.4 to 3.5 mGy. In the ChNPP Exclusion Zone, four research sites of natural ecosystems were selected and surveyed. The absorbed dose rate for soil microflora was: 3.7 μGy/h in the 1st site, 22.2 μGy/h in the 2nd site, 61.6 μGy/h in the 3rd site, 84.0 μGy/h in the 4th site and, accordingly, during the period of plant substrate incubation, a dose of 8 to 181 mGy was formed. Changes of the TBI coefficients at different doses of ionizing radiation generated at different research sites, as well as the enzymatic activity of the microflora and humic compounds have been studied. The project direction was popularized at the international level and previously obtained results were demonstrated at the interna Product Description popup.authors Illienko Volodymyr V. Bilyera Nataliya M. Bondar Valeriia Ivanivna Hudkov Ihor Mykolaiovych Kashparova Olena V. Klepko Alla Volodymyrivna Lazariev Mykola Mykhailovych Pareniuk Olena Yu POLISHCHUK SERHII VOLODYMYROVYCH Shavanova Katerina Ye. popup.nrat_date 2022-03-09 Close