The role of forest and its components in protection against radioactive contamination
The forests of the western region of Russia are subjected to the greatest radioactive pollution due to the accident at Chernobyl power station. It is established, that the forest is a very effective natural factor for protection against radiation. The forest and its components absorb the main mass (up to 80 percent) of radio nuclides and are able to bind, to confine and to protect against their pouring out beyond the limits of polluted areas; thus protecting the environment from the secondary radioactive pollution. Radio stability of coniferous species as compared with deciduous species is not high. Mean specific radioactivity of varied components of forest ecosystems is given, being 56; 104; 109; 123; 275; 360; 933 and 1467 Bk/kg for barked wood, bark, grassy vegetation, mineral portion of soil, moss and forest covering, respectively. Some recommendations related to ecological normalizing the territories polluted with radio nuclides, such as improvement of afforestation of forest-steppe zone and the development of complex biologically stable forest plants are given.
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