Krolak Elzbieta, Kwapulinski Jerzy, Fischer Agnieszka
Institute of Biology, University of Podlasie, 12 Prusa Street, 08-110, Siedlce, Poland.
Radiat Environ Biophys. 2010 May;49(2):229-37. doi: 10.1007/s00411-010-0265-5. Epub 2010 Jan 14.
The vertical (137)Cs profile of forest and wasteland soils was analyzed in the south of the Podlasie Lowland area (Eastern Poland) about 20 years after the Chernobyl accident. In addition, the concentration of (40)K in soils of the investigated area was measured. Below the litter layer (mean thickness 3 cm), the soil samples were collected up to a depth of 12 cm and then divided into three layers: 0-3, 3-7, 7-12 cm. The behavior of (137)Cs and (40)K isotopes in soils was analyzed depending on the depth from which the soil samples were collected, as well as on the content of organic carbon, pH of soil and its granulometric composition. It was established that the density of (137)Cs in the litter layer equals 2.17 kBq m(-2); it is the highest in layer 0-3 cm where it equals 3.44 kBq m(-2), and it decreases with the depth to the value of 0.76 kBq m(-2) in layer 7-12 cm. No similar pattern was observed in wasteland soils. The concentrations of (40)K in forest and wasteland soils did not change significantly with depth.
在切尔诺贝利事故发生约20年后，对波德拉谢低地地区（波兰东部）南部的森林和荒地土壤的垂直（137）铯剖面进行了分析。此外，还测量了研究区域土壤中（40）钾的浓度。在枯枝落叶层（平均厚度3厘米）以下，采集深度达12厘米的土壤样本，然后将其分为三层：0 - 3厘米、3 - 7厘米、7 - 12厘米。根据土壤样本采集深度以及土壤有机碳含量、土壤pH值及其粒度组成，分析了（137）铯和（40）钾同位素在土壤中的行为。结果表明，枯枝落叶层中（137）铯的密度为2.17 kBq m(-2)；在0 - 3厘米层中最高，为3.44 kBq m(-2)，并随深度降低，在7 - 12厘米层降至0.76 kBq m(-2)。在荒地土壤中未观察到类似模式。森林和荒地土壤中（40）钾的浓度随深度变化不显著。
