Low- to moderate-severity historical fires promoted high tree growth in a boreal Scots pine forest of Norway

Autor: Ken Olaf Storaunet, Jørund Rolstad, Ylva-li Blanck
Rok vydání: 2013
Předmět:
Zdroj: Scandinavian Journal of Forest Research. 28:126-135
ISSN: 1651-1891
0282-7581
DOI: 10.1080/02827581.2012.706635
Popis: Fire is the most important ecological factor governing boreal forest stand dynamics. In low- to moderate-severity fires, the post-fire growth of the surviving trees varies according to fire frequency, intensity and site factors. Little is known about the growth responses of Scots pine (Pinus sylvestris L.) following fires in boreal forests. We quantified changes in tree growth in the years following 61 historical forest fires (between 1210 and 1866) in tree-ring series collected from fire-scarred Scots pine trees, snags and stumps in Trillemarka nature reserve in south-central Norway. Basal area increment 10 years pre-, 5 years post-, and 11–20 years post-fire were calculated for 439 fire scars in 225 wood samples. We found a slight temporary growth reduction 5 years post-fire followed by a marked growth increase 11–20 years post-fire. Beyond 20 years post-fire, the long-term tree growth declined steadily up to approximately 120 years. Our results indicate that recurring fires maintained high tre...
Databáze: OpenAIRE
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