Initiation of radioecological monitoring of forest soils and plants at the Lithuanian border region before the start of
- PDF / 1,700,538 Bytes
- 18 Pages / 547.087 x 737.008 pts Page_size
- 56 Downloads / 194 Views
Initiation of radioecological monitoring of forest soils and plants at the Lithuanian border region before the start of the Belarusian nuclear power plant operation Olga Jefanova & Ieva Baužienė & Galina Lujanienė & Jurgita Švedienė & Vita Raudonienė & Danguolė Bridžiuvienė & Algimantas Paškevičius & Loreta Levinskaitė & Jonas Žvirgždas & Rimantas Petrošius & Žana Skuratovič & Jonas Mažeika Received: 14 April 2020 / Accepted: 24 September 2020 # Springer Nature Switzerland AG 2020
Abstract Knowledge of the background activity concentrations of anthropogenic radionuclides before the start of operation of the new nuclear power plant in Belarus, BelNPP, is an issue of great importance for neighbouring countries. In this study, we provide the pilot characterisation of the Lithuanian part of the 30-km zone of the BelNPP, emphasising the forest plants, terrestrial mosses, forest organic and mineral topsoil to describe the preoperational radioecological state of the pine forest ecosystem. Key anthropogenic radionuclides (14C, 3H, 137Cs and 239,240Pu) were analysed. The 14C specific activity varied from 97.80 ± 1.30 to 102.40 ± 0.79 pMC. The 3H specific activity in the tissue-free water tritium form varied from 13.2 ± 2.2 TU to 20.8 ± O. Jefanova : R. Petrošius : Ž. Skuratovič : J. Mažeika Laboratory of Nuclear Geophysics and Radioecology, State Institute Nature Research Centre, Akademijos 2, 08412 Vilnius, Lithuania I. Baužienė (*) Laboratory of Geoenvironmental Research, State Institute Nature Research Centre, Akademijos 2, 08412 Vilnius, Lithuania e-mail: [email protected] e-mail: [email protected] G. Lujanienė Department of Environmental Research, State Research Institute Center for Physical Sciences and Technology, Saulėtekio av. 3, 10257 Vilnius, Lithuania J. Švedienė : V. Raudonienė : D. Bridžiuvienė : A. Paškevičius : L. Levinskaitė : J. Žvirgždas Laboratory of Biodeterioration Research, State Institute Nature Research Centre, Akademijos 2, 08412 Vilnius, Lithuania
2.3 TU, which corresponded to the 3H level of precipitation in this region. The activity concentrations of 239,240 Pu in soil and moss samples did not exceed 1 Bq/kg and were mainly due to global fallout after nuclear tests. The 137Cs inventory in the pine forest soils of the Lithuanian part of the BelNPP 30-km zone varied from 930 ± 70 to 1650 ± 430 Bq/m2. High variation of the inventory and uneven distribution in the soil profile conditioned a wide range of 137Сs activity in terrestrial plants from 1.0 ± 0.5 to 40.5 ± 1.8 Bq/kg dry weight. The abundance of microorganisms in different seasons and soil depths do not exceed the natural levels. According to PCA loads, the number of microorganisms and variability of 137Cs specific activity is determined by soil abiotic parameters. Keywords Anthropogenic radionuclides . Natural radionuclides . Terrestrial . Microorganisms . Arenosol properties
Introduction The expansion of the number of operating nuclear power reactors in the east Baltic region is of great importance for Lithuania, where active dis
Data Loading...
