Biotic and abiotic factors as causes of coniferous forests dieback in Siberia and Far East

This study is based on 20 years of research into the massive dieback of coniferous forests (Pinus sibirica Du Tour, Picea obovata Ledeb., Abies sibirica Ledeb., Pinus sylvestris L., Larix gmelinii (Rupr.) Kuzen., Abies nephrolepis (Trautv. ex Maxim.) Maxim., Pinus koraiensis Siebold & Zucc.) in...

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Bibliographic Details
Published in:Contemporary problems of ecology 2015-07, Vol.8 (4), p.440-456
Main Author: Pavlov, I. N
Format: Article
Language:English
Subjects:
Abies
Abies sibirica
Abiotic factors
Abiotic stress
Armillaria mellea
Biomedical and Life Sciences
Coniferous forests
Coniferous trees
conifers
Dieback
Disease spread
Ecology
edaphic factors
Forests
Heterobasidion annosum
Larix gmelinii
Life Sciences
Nephrolepis
Phaeolus schweinitzii
Phellinus
Picea
Picea obovata
Pine trees
Pinus koraiensis
Pinus sibirica
Pinus sylvestris
root rot
Woody plants
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Summary:This study is based on 20 years of research into the massive dieback of coniferous forests (Pinus sibirica Du Tour, Picea obovata Ledeb., Abies sibirica Ledeb., Pinus sylvestris L., Larix gmelinii (Rupr.) Kuzen., Abies nephrolepis (Trautv. ex Maxim.) Maxim., Pinus koraiensis Siebold & Zucc.) in Siberia and the Far East. It was found that the dieback had been provoked by the causative agents of root rot disease (Armillaria mellea s.l, Heterobasidion annosum s.l, Phellinus sulphurascens Pilat., Porodaedalea niemelaei M. Fischer, Phaeolus schweinitzii (Fr.) Pat.). The disease spread due to the decreased biological sustainability of coniferous trees. A. borealis Marxm. & Korh. should be considered the most dangerous species affecting a large variety of woody plants in different forest-site conditions. The trigger mechanism of the dieback was a combination of adverse climatic anomalies and certain edaphic conditions and/or a set of factors favorable for pathogenic organisms.
ISSN:1995-4255
1995-4263
DOI:10.1134/s1995425515040125