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Impact of Climate Change on Forest Fire Severity and Consequences for Carbon Stocks in Boreal Forest Stands of Quebec, Canada: a Synthesis

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van Bellen, Simon, Garneau, Michelle et Bergeron, Yves (2010). Impact of Climate Change on Forest Fire Severity and Consequences for Carbon Stocks in Boreal Forest Stands of Quebec, Canada: a Synthesis. Fire Ecology , 6 (3). p. 16-44. doi:10.4996/fireecology.0603016 Repéré dans Depositum à https://depositum.uqat.ca/id/eprint/1163

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Résumé

The global boreal forests comprise large stocks of organic carbon that vary with climate and fire regimes. Global warming is likely to influence several aspects of fire and cause shifts in carbon sequestration patterns. Fire severity or forest floor depth of burn is one important aspect that influences both carbon emission during combustion as well as postfire ecosystem regeneration. Numerous publications on projections of future area burned exist, whereas scenarios on twenty-first century fire severity are more scarce, and the stand-typical response to severe fire weather is rarely taken into account. This paper aims to synthesize knowledge on boreal forest carbon stocks in relation to changes in fire severity for Quebec, Canada. Besides warming, this region may be subjected to an important increase in future precipitation. Future fire severity and area burned may well increase as fire weather will be drier, especially near the end of the twenty-first century. Moreover, the fire season peak may shift towards the late summer. Intense burning will favour tree cover development while the forest floor carbon stock may become less important. As a result, total Quebec boreal carbon sequestration may diminish. The development of dynamic vegetation models may improve scenarios on twenty-first century changes in carbon sequestration driven by climate change and fire severity and frequency effects.

Type de document: Article
Mots-clés libres: Boreal forest; Carbon; Climate change; Eastern Canada; Fire regime; Fire severity; Fire Weather Index; Forest floor
Divisions: Forêts
Date de dépôt: 13 mai 2020 16:11
Dernière modification: 13 mai 2020 16:11
URI: https://depositum.uqat.ca/id/eprint/1163

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