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Activity concentrations of natural radionuclides and 137Cs in soils of coniferous forest sites in West Anatolia
- Karadeniz, Ãzlem, Yaprak, GÃ¼nseli
- European journal of forest research 2011 v.130 no.2 pp. 271-276
- agricultural soils, cesium, coniferous forests, disasters, forest soils, gamma radiation, mushrooms, radionuclides, soil depth, soil pollution, soil sampling, soil surface layers, soil surveys, Turkey (country)
- The surveys of natural gamma-emitting radionuclides and 137Cs in surface soils of coniferous forest sites in and around Izmir were conducted during 2003â2004. The soil samples were collected from three different depths of 15 forest sites, particularly local wild edible mushrooms areas. The average activity concentrations and ranges of the natural radionuclides in the soils were as follows: 30 (14â51) BqÂ kgâ1 of 226Ra; 40 (17â79) BqÂ kgâ1 of 232Th; and 581 (308â879) BqÂ kgâ1 of 40K. Moreover, the values of 137Cs activity concentrations averaged over the depth sections varied from 20 to 82Â BqÂ kgâ1 with a mean value of 52Â BqÂ kgâ1. Accordingly, the levels of the studied natural radionuclides in the forest soils were within the range specified by UNSCEAR (2000) report for regular soils as well as the agricultural soils from the West Anatolia, while the measured activity levels of 137Cs in the forest soils were still high in contrast to agricultural soils after 16Â years from the deposition of Chernobyl fallout.