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Biogeochemical cycles of Chernobyl-born radionuclides in the contaminated forest ecosystems. Long-term dynamics of the migration processesстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 10 февраля 2016 г.
- Авторы: Shcheglov A., Tsvetnova O., Klyashtorin A.
- Журнал: Journal of Geochemical Exploration
- Том: 144
- Год издания: 2014
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 260
- Последняя страница: 266
- DOI: 10.1016/j.gexplo.2014.05.026
- Аннотация: The paper integrates the results of 25-year monitoring study of Cs-137 and Sr-90 biogeochemical cycle in the forest ecosystems of Russia and Ukraine contaminated due to the Chernobyl accident. The monitoring network was established in 1986 as a number of long-term key sites (KS) located 5 to over 500 km from the Chernobyl NPP. The following components have been monitored: biota (trees, grass and shrubs, mosses, and fungi), soils (forest litter and mineral horizons), soil water, and throughfall. Presently, 25 years after the Chernobyl fallout, Cs-137 and Sr-90 uptake by vegetation exceed their infiltration through the soil, i. e. biogeochemical cycle currently plays an important role impeding the radionuclide infiltration through soil to the ground water. In wet, accumulative landscapes, biota is a leading factor of the radionuclide cycle, while in dry, eluvial landscapes, soil absorbing complex plays a more important role. The effect of landscape type is manifested for Cs-137, yet less important for Sr-90. Cs-137 is actively uptaken by the fungi complex, while Sr-90 is primarily accumulated in the arboreal vegetation. Biogeochemical fluxes of Cs-137 and K-39 in some ecosystems are still different, even 25 years after the fallout. (C) 2014 Elsevier B. V. All rights reserved.
- Добавил в систему: Цветнова Ольга Борисовна