Verbelchuk S. The Substantiation of Utilizing Ukrainian Polissya Critical Landscapes Contaminated With 137Cs As a Result of the Chernobyl NPP Catastrophe

The - thesis presents the theoretical and experimental data related the use of critical landscapes by the rural population of Ukrainian Polissya. The effects of natural ecosystems on the animal body radiocontamination and the formation of mans dose load and the substantiation of the ways of utilizing critical landscapes by the rural population residing in the zone of obligatory resettlement are presented on the basis of experimental data. The peculiarities of 137Cs and 90Sr migration in the soil - grassland - cow milk trophic chain on individual farms situated in the gone of obligatory resettlement have been studied. The seasonal and annual dynamics of 137Cs accumulation by roedeer muscles within the period of 16 years has been determined. The coefficients of 137Cs transfer into plants and mushrooms of forest ecosystem have been determined. The coefficients of transfer as well as aggregates coefficients of 90Sr transfer to various integral parts of semi - natural ecosystems (grass, milk of cows, various types of plants, mushrooms, roedeer meat) have been determined as well.