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Fire history within the northern larch forests of Central Siberia was studied (65 + º N). Fires within this area are predominantly caused by lightning strikes rather than human activity. Mean fire return intervals (FRIs) were found to be 112 ± 49 years (based on firescars) and 106 ± 36 years (based on firescars and tree natality dates). FRIs were increased with latitude increase and observed to be about 80 years at 64º N, about 200 years near the Arctic Circle and about 300 years nearby the northern range limit of larch stands (~ 71º + N). Northward FRIs increase correlated with incoming solar radiation (r = -0.95). Post-Little Ice Age (LIA) warming (after 1850) caused approximately a doubling of fire events (in comparison with a similar period during LIA). The data obtained support a hypothesis of climate-induced fire frequency increase. © Springer-Verlag Berlin Heidelberg 2016.
Cataloging Information
- boreal forest
- climate change
- fire frequency
- fire regimes
- larch forests
- Siberian wildfires
- wildfires
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