Analysis of the contribution of forest pathways to the radiation exposure of different population groups in the Bryansk region of Russia |
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Authors: | S V Fesenko G Voigt S I Spiridonov N I Sanzharova I A Gontarenko M Belli U Sansone |
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Institution: | (1) Russian Institute of Agricultural Radiology and Radioecology, 249020 Obninsk, Russia, RU;(2) GSF – Institute of Radiation Protection, 85764 Neuherberg, Germany e-mail: voigt@gsf.de Tel.: +49-89-31874005, Fax: +49-89-31873363, DE;(3) Agencia Nacionale per la Protezione del’Ambiente, Rome, Italy, IT |
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Abstract: | The experience gained in the aftermath of serious radiation accidents shows that forests are an important source of external
and internal exposure of the affected population. This paper presents the results of an assessment of the major radiological
consequences for forests of Russia, most heavily contaminated after the Chernobyl nuclear power plant (ChNPP) accident. Illustrated
in the Novozybkovsky district of the Russian Federation, the significance of different forest exposure pathways is estimated
and the doses resulting from forest pathways are compared with the doses from agricultural products. It has been found that
the contribution of mushrooms and berries to the internal doses of the population, relative to the doses from agricultural
products, varied from 10–15% in 1987 to 40–45% in 1996. The results indicate large differences in internal exposure of members
of the ”critical groups” and ”normal population”, increasing with time after deposition. Data are presented that give information
on the contribution of forests to the collective doses of inhabitants of the area under consideration. It has been shown that
for 10 years after the accident (1987–1996), the contribution of forest products to the collective dose of the rural population
living in contaminated forests of the Novozybkovsky district, amounts to about 20% (213 person Sv) of the total collective
dose of internal and external exposures. However, a potential impact of these products including the dose from exported products
is much higher and might reach 659 person Sv. It has been found that in the long-term after the ChNPP accident, serious attention
should be given to forest countermeasures, and restoration strategies should be selected on the basis of a combined analysis
of the effectiveness of forest and agricultural countermeasures.
Received: 16 March 2000 / Accepted: 10 September 2000 |
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