[The quantitative parameters of the vertical migration of radionuclides in the soils in different types of meadows].
The two-component convective-diffusional model was used for determination of vertical migration parameters of 90Sr [correction of 90Cs] and 137Cs in meadow ecosystems and dependence from meadow type and soil properties was shown. The migration coefficients decrease in the order: peat land, lowland meadows, flood-plain meadows, dry meadows. The ecological half-life in the root zone ranges from 55 to 143 y for dry meadows and from 15 to 21 y for peat lands. Analogous parameters for 90Sr was 30-96 and 13-18 y, respectively. Since 1987 to 1994 the ecological half-life of 137Cs increased by a factor of 1.7-6.0.
Sanzharova
N I
NI
Kotik
V A
VA
Arkhipov
A N
AN
Sokolik
G A
GA
Ivanov
Iu A
IuA
Fesenko
S V
SV
Levchuk
S E
SE
D002588:Cesium Radioisotopes; D018481:Convection; D004058:Diffusion; D017753:Ecosystem; D006207:Half-Life; D010944:Plants; D011210:Power Plants; D018788:Radioactive Hazard Release; D002094:Republic of Belarus; D012426:Russia; D012990:Soil Pollutants, Radioactive; D013326:Strontium Radioisotopes; D014455:Ukraine
D002588:Cesium Radioisotopes; D012990:Soil Pollutants, Radioactive; D013326:Strontium Radioisotopes