SimardBernierBergeronEtAl2009

Référence

Simard, M., Bernier, P.Y., Bergeron, Y., Pare, D. and Guerine, L. (2009) Paludification dynamics in the boreal forest of the James Bay Lowlands: effect of time since fire and topography. Canadian Journal of Forest Research, 39(3):546-552.

Résumé

In many northern forest ecosystems, soil organic matter accumulation can lead to paludification and forest productivity losses. Paludification rate is primarily influenced by topography and time elapsed since fire, two factors whose influence is often confounded and whose discrimination would help forest management. This study, which was conducted in the black spruce (Picea mariana (Mill.) BSP) boreal forest of northwestern Quebec (Canada), aimed to (1) quantify the effect of slope and time since fire on paludification rates, (2) determine whether soil organic layer depth could be estimated by surface variables that can potentially be remotely sensed, and (3) relate the degree of paludification to tree productivity. In this study, soil organic layer depth was used as an estimator of the degree of paludification. Slope and postfire age strongly affected paludification dynamics. Young stands growing on steep slopes had thinner organic layers and lower organic matter accumulation rates compared with young stands growing on flat sites. Black spruce basal area and Sphagnum cover were strong predictors of organic layer depth, potentially allowing mapping of paludification degree across the landscape. Tree productivity was negatively related to organic layer depth (R-2 = 0.57). The equations developed here can be used to quantify forest productivity decline in stands that are undergoing paludification, as well as potential productivity recovery given appropriate site preparation techniques.

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@ARTICLE { SimardBernierBergeronEtAl2009,
    AUTHOR = { Simard, M. and Bernier, P.Y. and Bergeron, Y. and Pare, D. and Guerine, L. },
    TITLE = { Paludification dynamics in the boreal forest of the James Bay Lowlands: effect of time since fire and topography },
    JOURNAL = { Canadian Journal of Forest Research },
    YEAR = { 2009 },
    VOLUME = { 39 },
    PAGES = { 546-552 },
    NUMBER = { 3 },
    MONTH = { mar },
    AF = { Simard, MartinEOLEOLBernier, Pierre Y.EOLEOLBergeron, YvesEOLEOLPare, DavidEOLEOLGuerine, Lakhdar },
    C1 = { [Simard, Martin; Bergeron, Yves; Guerine, Lakhdar] Univ Quebec, Ind Chair Sustainable Forest Management, NSERC UQAT UQAM, Rouyn Noranda, PQ J9X 4E5, Canada.EOLEOL[Simard, Martin; Bergeron, Yves; Guerine, Lakhdar] Univ Quebec, Ctr Etud Foret, Montreal, PQ H3C 3P8, Canada.EOLEOL[Simard, Martin; Bernier, Pierre Y.; Pare, David; Guerine, Lakhdar] Nat Resources Canada, Canadian Forest Serv, Laurentian Forestry Ctr, Quebec City, PQ G1V 4C7, Canada. },
    DI = { 10.1139/X08-195 },
    EM = { simard@wisc.edu },
    FU = { Canada Economic Development ; Regional StrategicEOLEOLInitiative-Abitibi-Temiscamingue ; ministere des Ressources naturellesEOLEOLet de la Faune du Quebec ; NSERC-UQAT-UQAM Industrial Chair inEOLEOLSustainable Forest Management ; Tembec },
    FX = { We thank P. Leblanc and T. Jones for field assistance and M.EOLEOLBernier-Cardou (Canadian Forest Service) and C. Ane (University ofEOLEOLWisconsin-Madison) for statistical advice. This study was funded byEOLEOLCanada Economic Development, Regional StrategicEOLEOLInitiative-Abitibi-Temiscamingue (RSI-Abitibi) and the ministere desEOLEOLRessources naturelles et de la Faune du Quebec (Volet 1). AdditionalEOLEOLfunding was provided through a postdoctoral fellowship to L. Guerine byEOLEOLthe NSERC-UQAT-UQAM Industrial Chair in Sustainable Forest Management.EOLEOLWe gratefully acknowledge the support of our industrial partner Tembec. },
    GA = { 434PE },
    J9 = { CAN J FOREST RES },
    JI = { Can. J. For. Res.-Rev. Can. Rech. For. },
    LA = { English },
    NR = { 38 },
    PA = { BUILDING M 55, OTTAWA, ON K1A 0R6, CANADA },
    PG = { 7 },
    PI = { OTTAWA },
    RP = { Simard, M, Univ Wisconsin, Dept Zool, Birge Hall,430 Lincoln Dr,EOLEOLMadison, WI 53706 USA. },
    SC = { Forestry },
    SN = { 0045-5067 },
    TC = { 0 },
    UT = { ISI:000265285800007 },
    ABSTRACT = { In many northern forest ecosystems, soil organic matter accumulation can lead to paludification and forest productivity losses. Paludification rate is primarily influenced by topography and time elapsed since fire, two factors whose influence is often confounded and whose discrimination would help forest management. This study, which was conducted in the black spruce (Picea mariana (Mill.) BSP) boreal forest of northwestern Quebec (Canada), aimed to (1) quantify the effect of slope and time since fire on paludification rates, (2) determine whether soil organic layer depth could be estimated by surface variables that can potentially be remotely sensed, and (3) relate the degree of paludification to tree productivity. In this study, soil organic layer depth was used as an estimator of the degree of paludification. Slope and postfire age strongly affected paludification dynamics. Young stands growing on steep slopes had thinner organic layers and lower organic matter accumulation rates compared with young stands growing on flat sites. Black spruce basal area and Sphagnum cover were strong predictors of organic layer depth, potentially allowing mapping of paludification degree across the landscape. Tree productivity was negatively related to organic layer depth (R-2 = 0.57). The equations developed here can be used to quantify forest productivity decline in stands that are undergoing paludification, as well as potential productivity recovery given appropriate site preparation techniques. },
    KEYWORDS = { INITIAL TREE COMPOSITION; STRUCTURAL DEVELOPMENT; NORTHWESTERN QUEBEC; EASTERN CANADA; ORGANIC-LAYER; PRODUCTIVITY; CHRONOSEQUENCE; ECOSYSTEMS; SEVERITY; WILDFIRE },
    OWNER = { sobru1 },
    PUBLISHER = { Natl Research Council Canada-N R C Research Press },
    TIMESTAMP = { 2009.05.08 },
}

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