Radiocaesium and potassium behaviour in forest trees

Establishment of control site baseline data for erosion studies using radionuclides: a case study in East Slovenia

“…The average of 137 Cs activity in different regions of Serbia is 26 Bq kg À1 (ranged from 68 AE 6 to 2.1 AE 0.2 Bq kg À1 ) which are in good agreement with the values obtained from neighbouring areas such as Croatia, 39 Bq kg À1 and Vojvodina, 12 Bq kg À1 (Jankovic et al, 2008). Potassium is one of the essential nutrient elements for plants in forest ecosystems (Ronneau et al, 1991). The results in this study showed a negative correlation between 137 Cs and 40 K, 40 K increased with depth whereas 137 Cs decreased with depth (Fig.…”

Impact of Scots pine (Pinus sylvestris L.) plantings on long term 137Cs and 90Sr recycling from a waste burial site in the Chernobyl Red Forest

“…The net root uptake contributed in fact to only 40% of the current 137 Cs incorporation rate. A high mobility of radiocaesium, similar to K, is classical for forest trees (Ronneau et al, 1991) which explains the high internal transfer observed in accordance with other studies on K cycling in Scots pine (Malkonen, 1974). Litterfall and throughfall returned to the soil a large part of the 137 Cs uptake (w70%), resulting in a limited 137 Cs immobilisation in perennial compartments (w15% of annual uptake) which is in agreement with Cs dynamics in young pine plantations, as observed by Goor and Thiry (2004) for contaminated forest in Belarus.…”

Radiocesium contaminations of 20 wood species and the corresponding gamma-ray dose rates around the canopies at 5 months after the Fukushima nuclear power plant accident

“…The observations of radionuclide dispersal were conducted not only for the neighboring district of Chernobyl (Tikhomirov and Scheglov, 1994;Fogh and Andersson, 2001;Sokolik et al, 2001;Ramzaev et al, 2006), but also for most parts of Europe, including Belgium (Ronneau et al, 1991;Sombré et al, 1994), Bulgaria (Zhiyanski et al, 2008), England (Bonnet and Anderson, 1993), France (Barci-Funel et al, 1995), Germany (Bunzl and Kracke, 1988), Greece (Clouvas et al, 2005), Spain (Navasa et al, 2012), and Sweden (Melin et al, 1994;Fawaris and Johanson, 1995;McGee et al, 2000;Belyazida et al, 2006). These observations not only provided information regarding the regional and local characteristics of the radionuclide distribution, but they also provided information related to the science associated with forest ecosystems/woody plants, such as plant physiology, meteorology, soil science and physico-chemistry, geomorphology, and radiology.…”