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Modeling Tree Mortality Following Wildfire in the Southeastern Canadian Mixed-Wood Boreal Forest

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We modeled tree mortality three months after a wildfire in the mixed-wood boreal forest (Quebec, Canada) using data from 1963 trees in 36 stands burned under a wide range of fire behavior conditions during the 1997 Val Paradis fire. Stand composition influenced the char height: height of burn was lower in deciduous stands than mixed or coniferous stands. Analysis of species mortality rates revealed that Populus tremuloides Michx. was the least fire-resistant species, whereas Picea mariana Moench and Pinus banksiana Lamb. were the most resistant species. Efficient interactions for conifers exist between crown and cambial resistance to injury and fire behavior, as diameter at breast height (DBH), total tree height (TOTH), and mean bark thickness are characteristic variables throughout the fire behavior range. The best logistic regressions, relating probability of wildfire-induced mortality to morphology and fire variables, always entered char height (CH) at the first step of the stepwise procedure, followed by a morphological variable (DBH or TOTH). The Kappa coefficient used for model validations revealed that logistic regressions using morphologic and fire variables were very efficient as compared to logistic regressions based only on morphologic variables. Potential applications of these results by land managers are discussed. FOR. SCI. 49(4):566–576.
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Keywords: Fire intensity; Picea mariana; Pinus banksiana; Populus tremuloides; environmental management; forest; forest management; forest resources; forestry; forestry research; forestry science; logistic regression; natural resource management; natural resources

Document Type: Miscellaneous

Affiliations: 1: CEREGE, UMR CNRS 6635-Universite Aix-marseille III, Europole de l'Arbois, B.P. 80 13545 Aix en Provence cedex 4, France, Phone: +33-0-4-42-97-15-42; Fax: +33-0-4-42-97-15-95 [email protected] 2: Canadian Forest Service, 1219 Queen St. East, Sault Ste Marie, ON, Canada, P6A2E5, Phone: 705-541-5541 [email protected] 3: Groupe de Recherche en E´cologie Forestière, Université du Québec à Montréal, C.P. 8888, Succursale Centre-Ville, Montréal, Québec, Canada, H3C 3P8, Phone: 514-987-3000 ext. 4872 [email protected]

Publication date: 2003-08-01

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2016 Impact Factor: 1.782 (Rank 17/64 in forestry)

    Average time from submission to first decision: 62.5 days*
    June 1, 2016 to Feb. 28, 2017

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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