GrenierBergeronKneeshawEtAl2005

Référence

Grenier, D.J., Bergeron, Y., Kneeshaw, D.D. and Gauthier, S. (2005) Fire frequency for the transitional mixedwood forest of Timiskaming,Quebec, Canada. Canadian Journal of Forest Research, 35(3):656-666.

Résumé

Fire history was reconstructed for a 2500-km2 area at the interfacebetween the boreal coniferous and northern hardwood forests of southwesternQuebec. The fire cycle, the time required for an area equal to thestudy site to burn once over, was described using a random samplingstrategy that included dendrochronological techniques in conjunctionwith provincial and national government archival data. Physiographicelements were not found to spatially influence fire frequency; however,human land-use patterns were observed to significantly affect thefire frequency. A temporal shift in fire frequency was also detected,which coincided with the period of Euro-Canadian colonization andknown extreme dry years for the study site. Additionally, a fire-freeperiod was identified in the most recent times that could be associatedwith fire suppression and climate change. The estimated cycles (approx.188-314 years) for the southeastern section of the study area werethought to better represent the natural cycles for this transitionzone as a result of less anthropogenic influence. The importanceof gap-type dynamics becomes evident with the increased presenceof old-growth forest, given the derived fire cycle estimations forthe region. Even-aged management with short rotations, consequently,is questioned because fire cycle estimations suggest more complexharvest systems using an ecosystem management approach. © 2005 NRCCanada.

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@ARTICLE { GrenierBergeronKneeshawEtAl2005,
    AUTHOR = { Grenier, D.J. and Bergeron, Y. and Kneeshaw, D.D. and Gauthier, S. },
    TITLE = { Fire frequency for the transitional mixedwood forest of Timiskaming,Quebec, Canada },
    JOURNAL = { Canadian Journal of Forest Research },
    YEAR = { 2005 },
    VOLUME = { 35 },
    PAGES = { 656-666 },
    NUMBER = { 3 },
    ABSTRACT = { Fire history was reconstructed for a 2500-km2 area at the interfacebetween the boreal coniferous and northern hardwood forests of southwesternQuebec. The fire cycle, the time required for an area equal to thestudy site to burn once over, was described using a random samplingstrategy that included dendrochronological techniques in conjunctionwith provincial and national government archival data. Physiographicelements were not found to spatially influence fire frequency; however,human land-use patterns were observed to significantly affect thefire frequency. A temporal shift in fire frequency was also detected,which coincided with the period of Euro-Canadian colonization andknown extreme dry years for the study site. Additionally, a fire-freeperiod was identified in the most recent times that could be associatedwith fire suppression and climate change. The estimated cycles (approx.188-314 years) for the southeastern section of the study area werethought to better represent the natural cycles for this transitionzone as a result of less anthropogenic influence. The importanceof gap-type dynamics becomes evident with the increased presenceof old-growth forest, given the derived fire cycle estimations forthe region. Even-aged management with short rotations, consequently,is questioned because fire cycle estimations suggest more complexharvest systems using an ecosystem management approach. © 2005 NRCCanada. },
    KEYWORDS = { Climate change Ecosystems Fires Hardwoods Harvesters Land use Anthropogenicinfluence Boreal coniferous forests Hardwood forests Mixedwood forestsForestry climate change dendrochronology ecosystem management firehistory historical ecology human activity mixed forest ClimatesEcosystems Forest Fires Hardwoods Harvesters Land Use Mixed StandsCanada Lake Timiskaming North America Western Hemisphere World },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.04 },
}

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