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Natural and anthropogenic consequences of tropical forest soils in Northern Peru using environmental radionuclides as radiotracers

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Dietz,  Johannes Michael
Department Biogeochemical Processes, Prof. E.-D. Schulze, Max Planck Institute for Biogeochemistry, Max Planck Society;

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Fujiyoshi, R., Satake, Y., Sato, T., Sumiyoshi, T., Dietz, J. M., & Zimmermann, R. (2009). Natural and anthropogenic consequences of tropical forest soils in Northern Peru using environmental radionuclides as radiotracers. Journal of Radioanalytical and Nuclear Chemistry, 279(2), 509-518. doi:10.1007/s10967-007-7308-2.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000E-D806-1
Abstract
Environmental radionuclides (K-40, Cs-137, Pb-210, Ra-226) were determined in soils under semi-arid stands, a transition area from thorn to deciduous forest in El Angolo, and heath stands in the Alto Mayo in Northern Peru in order to elucidate their activity level in soil, and to trace underground environment in remote areas of little anthropogenic intervention. Anthropogenic Cs-137 was only found in the uppermost portion of the soils in small amount, whereas the Pb-210 activity was exceptionally high at the soil surfaces in a tropical stand of Alto Mayo. The results suggest a fallout nuclide, Pb-210, having been transported from local source(s) not to be specified yet. [References: 18]