ОСОБЕННОСТИ НАКОПЛЕНИЯ МАКРОМИЦЕТАМИ ЕСТЕСТВЕННЫХ РАДИОНУКЛИДОВ В УСЛОВИЯХ СОЧЕТАННОГО РАДИАЦИОННО-ХИМИЧЕСКОГО ЗАГРЯЗНЕНИЯ (НА ПРИМЕРЕ БРЯНСКОЙ ОБЛАСТИ)

Identified the specific activity of natural radionuclides in fruit bodies of background species of fungi, as well as the rates of accumulation and transition. Used route, methods of soil testing, determination of specific activity of samples gamma spectrometry. The intensity of radionuclide accumulation in fruit bodies of fungi was assessed using the accumulation factors (Kn) and passage (Kp). The maximum specific activity of 137Cs was determined for fruiting  Paxillus involutus, Suillus variegatus аnd Lactarius pubescens – 11310, 5558 and 5443 Bq/kg, respectively, the minimum in the Boletus edulis and Lactarius vellereus. In the studied samples of mushrooms is great also the specific activity of 40K, 226Ra and 232Th, especially data intensive radioisotopes accumulate Suillus variegatus. An explicit link between the specific activity of 137Cs in mushrooms and soil were not identified. All species of mushrooms, taken in 2012, as well as samples of Paxillus involutus,and fungi of the genus Russula, taken in 2014, do not meet the requirements of environmental safety as well as the content of 137Cs in them exceeds permissible levels in 1,02-4.5 times. Maximum Kn observed 137Cs in fruit bodies of Paxillus involutus, – 16  - 41, the minimum in the fruit bodies of Boletus edulis – 1,43 and  Lactarius necator – 1,7 – of 2.81. High intensity of accumulation of 137Cs are also characterized by Lactarius necator, Morchella conica and mushrooms of the genus Russula. The maximum Kp of 137Cs in fruit bodies are characterized by Paxillus involutus (128-329 m 2 /kg∙10-3), Lactarius pubescens (102,8 m 2 /kg∙10-3) and Morchella conica (of 89.4 m 2 /kg∙10-3), this are species of batteries. As bioindicators of radioactive contamination proposed mushrooms, the most intensively accumulate radionuclides –  Paxillus involutus, Lactarius pubescens, Suillus variegatus, Morchella conica and mushrooms of the genus Russula. The results obtained are the basis of biomonitoring-based and eco-analytical studies of radionuclide migration with the participation of components of forest ecosystems.