POSTERS: ~(137)Cs uptake of forest berries

摘要

The variation of ~(137)Cs uptake by different forest berries was investigated by analysing berry samples collected during 1987-1989 in four sampling areas in northern Finland. The ~(137)Cs deposition after the Chernobyl accident in the study area varied from 1.6 to 7.3 kBq m~(-2). The ~(137)Cs uptakes of blueberry (Vaccinium myrtillus) and lingonberry (Vaccinium vitis-idaea) were nearly similar, and that of crowberry (Empetrum nigrum) about 20 percent lower, while the ~(137)Cs uptake of cranberry (Vaccinium oxycoccus) was 3-4 times higher than that of the other berries. No clear annual variation was seen in the ~(137)Cs uptake of the berries picked in 1987, 1988 or 1989 at the same sites; the ~(137)Cs concentrations were at the same level or a slight increase was seen at some sites.