Grytsyuk N. 137Cs behaviour in natural and semi-natural agro-landscapes of the Polissya and their classification by the radioecological criticacy level

Principal qualitative and quantitative criteria of radioecological criticacy of natural and semi-natural agrolandscapes of the Polissia were estimated by the experimental data. Radioecologically critical landscapes can be defined as ones, which show intencive accumulation of the radionuclides by phytomass due to the natural factors of the territory. Transfer factor was substantiated as a quantitative index of the radioecological criticasy. Analysis allowed to show the regularity between 137Cs transfer factor to natural and sown grasses and landscape structure of territory. Classification of agrolandscapes by radiological danger accounting location in the relief, assembly of soil conditions, character of vegetation cover and intensity of 137Cs transfer to phytomass was proposed. From the landscape map, 137Cs transfer factor maps were derived. Estimate-predicting 137Cs contamination maps of forage and some kinds of agricultural production were obtained on the base of transfer factor maps