Abstract:
The article analyzes the main factors leading to the rise in intensity of coniferous forests focal drying out on the territory of Southern Siberia, recorded during 1990-s. It has been shown that a significant factor weakening the resistance of coniferous trees, could be a long-term ozone depletion due to the constant presence of stratospheric volcanic aerosols caused by frequent Plinian eruptions of tropical belt volcanoes with VEI ≥ 4, which is why South Siberian region has been under continuous exposure to high doses of short-wave UV-B radiation since 1992 to 2012.
Keywords:
coniferous forests drying out, total ozone, ozone layer volcanic depletion, short-wave ultraviolet radiation
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