NDLI: Spatial and vertical distribution of $^{137}$Cs in soils in the erosive area of southeastern Serbia (Pčinja and South Morava River Basins)

Content Provider	Springer Nature Link
Author	Petrović, Jelena Dragović, Snežana Dragović, Ranko Đorđević, Milan Đokić, Mrđan Ćujić, Mirjana
Copyright Year	2015
Abstract	The area of southeastern Serbia, the Pčinja and South Morava River Basins, is under the influence of very strong erosion, and the aim of this study was to investigate the vertical and spatial distribution of the $^{137}$Cs in the eroded soils of this area.Vertical soil profiles were collected with 5-cm increments from the uppermost layer down to 20, 25, 30, 40, and 50 cm of depth, depending on the thickness of the soil layers, i.e., down to the underlying parent rocks. Measurements of $^{137}$Cs activity concentration were performed by using the HPGe gamma-ray spectrometer ORTEC-AMETEK (34 % relative efficiency and high resolution 1.65 keV at 1.33 MeV for $^{60}$Co), from its gamma-ray line at 661.2 keV.The mean $^{137}$Cs activity concentration across all 18 soil profiles (for all soil layers) was found to be 20 Bq kg$^{−1}$. In the greatest number of soil profiles, the $^{137}$Cs activity concentration was generally highest in the first soil layer (0–5 cm) and decreased with soil depth, while in a few soil profiles, the peak of either the $^{137}$Cs activity concentration occurred in the second soil layer (5–10 cm) or the $^{137}$Cs activity concentration was almost equal throughout the entire soil profile. The mean $^{137}$Cs activity concentration in the first soil layer (0–5 cm) was found to be 61 Bq kg$^{−1}$, and the high coefficient of variation of 92 % pointed out high spatial variability and large range of the $^{137}$Cs activity concentrations in the study area.The obtained results indicate that in the greatest number of soil profiles, $^{137}$Cs is present in the upper layers, with concentration decreasing with depth, as is typical in uncultivated soil. Its spatial distribution was very uneven among the surface soil layers of the investigated sites. One of the main reasons for such pattern of $^{137}$Cs in the study area may be soil erosion. Additional investigations which would support this hypothesis are required.
Starting Page	1168
Ending Page	1175
Page Count	8
File Format	PDF
ISSN	14390108
Journal	Journal of Soils and Sediments
Volume Number	16
Issue Number	4
e-ISSN	16147480
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-07-15
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	$^{137}$Cs Spatial distribution Vertical distribution Southeastern Serbia Pčinja and South Morava River Basins Soil Science & Conservation Environment Environmental Physics
Content Type	Text
Resource Type	Article
Subject	Stratigraphy Earth-Surface Processes

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