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Article

Uranium Vertical and Lateral Distribution in a German Forested Catchment

1
Institute of Bio- and Geosciences, Agrosphere (IBG-3), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
2
GFZ, German Centre for Geosciences, Telegrafenberg, 14473 Potsdam, Germany
3
Institute for Biodiversity and Ecosystem Dynamics, Amsterdam University, 1012 WX Amsterdam, The Netherlands
*
Author to whom correspondence should be addressed.
Forests 2020, 11(12), 1351; https://doi.org/10.3390/f11121351
Received: 29 October 2020 / Revised: 10 December 2020 / Accepted: 14 December 2020 / Published: 17 December 2020
(This article belongs to the Section Forest Ecology and Management)
The natural measurements of uranium (U) are important for establishing natural baseline levels of U in soil. The relations between U and other elements are important to determine the extent of geological origin of soil U. The present study was aimed at providing a three-dimensional view of soil U distribution in a forested catchment (ca. 38.5 ha) in western Germany. The evaluated data, containing 155 sampled points, each with four major soil horizons (L/Of, Oh, A, and B), were collected from two existing datasets. The vertical U distribution, the lateral pattern of U in the catchment, and the occurrence of correlations between U and three groups of elements (nutrient elements, heavy metals, and rare earth elements) were examined. The results showed the median U concentration increased sevenfold from the top horizon L/Of (0.14 mg kg−1) to the B horizon (1.01 mg kg−1), suggesting a geogenic origin of soil U. Overall, soil U concentration was found to be negatively correlated with some plant macronutrients (C, N, K, S, Ca) but positively with others (P, Mg, Cu, Zn, Fe, Mn, Mo). The negative correlations between U and some macronutrients indicated a limited accumulation of plant-derived U in soil, possibly due to low phytoavailability of U. Positive correlations were also found between U concentration and heavy metals (Cr, Co, Ni, Ga, As, Cd, Hg, Pb) or rare earth elements, which further pointed to a geogenic origin of soil U in this forested catchment. View Full-Text
Keywords: forest soil; uranium; correlation; distribution forest soil; uranium; correlation; distribution
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MDPI and ACS Style

Sun, Y.; Wu, B.; Wiekenkamp, I.; Kooijman, A.M.; Bol, R. Uranium Vertical and Lateral Distribution in a German Forested Catchment. Forests 2020, 11, 1351. https://doi.org/10.3390/f11121351

AMA Style

Sun Y, Wu B, Wiekenkamp I, Kooijman AM, Bol R. Uranium Vertical and Lateral Distribution in a German Forested Catchment. Forests. 2020; 11(12):1351. https://doi.org/10.3390/f11121351

Chicago/Turabian Style

Sun, Yajie, Bei Wu, Inge Wiekenkamp, Annemieke M. Kooijman, and Roland Bol. 2020. "Uranium Vertical and Lateral Distribution in a German Forested Catchment" Forests 11, no. 12: 1351. https://doi.org/10.3390/f11121351

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