MarcotteRoyPlamondonEtAl2008

Référence

Marcotte, P., Roy, V., Plamondon, A.P. and Auger, I. (2008) Ten-year water table recovery after clearcutting and draining boreal forested wetlands of eastern Canada. Hydrological Processes, 22(20):4163-4172.

Résumé

In boreal forested wetlands. the observed increase in the water table level after clearcutting (watering-up) is often a threat to sustained ecosystem productivity. Hydrologic recovery refers to file processes by which a water table progressively drops back to its initial level after the cut. In eastern Canada, drainage is Used operationally after clearcutting wet sites ill Order to lower the water table level and accelerate hydrologic recovery. The objective of this study was to evaluate (the duration Of (the v,watering-up caused by timber harvesting and the extent to which drainage affected the water table recovery on five peatlands and three hydromorphic mineral sites located ill the St. Lawrence Lowlands of Quebec (Canada). The mixed wood stands studied are dominated by balsam fir (Abies balasamea (L.) Mill.). eastern white cedar (Thuja occidentalis L.). and red maple (Acer rubrum L). Results indicate that. 10 years after clearcutting, water table levels in undrained plots are still 5 to 7 cm higher than the pre-cut levels. The slight recovery in water table level plateaued after the third year. Rainfall interception by vegetation was also monitored. and after 10 years had reached nearly 50% of the pre-cut rate. The immediate water table drawdown following drainage mitigated watering-up within 40 m of a ditch. The persistent watering-up observed in this study should encourage using sylvicultureal systems adapted to boreal forested wetlands in order 10 prevent productivity loss and stand conversion. Copyright (C) 2008 John Wiley & Sons. Ltd.

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@ARTICLE { MarcotteRoyPlamondonEtAl2008,
    AUTHOR = { Marcotte, P. and Roy, V. and Plamondon, A.P. and Auger, I. },
    TITLE = { Ten-year water table recovery after clearcutting and draining boreal forested wetlands of eastern Canada },
    JOURNAL = { Hydrological Processes },
    YEAR = { 2008 },
    VOLUME = { 22 },
    PAGES = { 4163-4172 },
    NUMBER = { 20 },
    MONTH = { sep },
    AF = { Marcotte, PhilippeEOLEOLRoy, VincentEOLEOLPlamondon, Andre P.EOLEOLAuger, Isabelle },
    DE = { watering-up; hydrologic recovery; forest drainage; rainfallEOLEOLinterception; evapotranspiration; St-Lawrence Lowlands; cedar; BalsamEOLEOLfir },
    DI = { 10.1002/hyp.7020 },
    PG = { 10 },
    SN = { 0885-6087 },
    UT = { ISI:000260108600012 },
    ABSTRACT = { In boreal forested wetlands. the observed increase in the water table level after clearcutting (watering-up) is often a threat to sustained ecosystem productivity. Hydrologic recovery refers to file processes by which a water table progressively drops back to its initial level after the cut. In eastern Canada, drainage is Used operationally after clearcutting wet sites ill Order to lower the water table level and accelerate hydrologic recovery. The objective of this study was to evaluate (the duration Of (the v,watering-up caused by timber harvesting and the extent to which drainage affected the water table recovery on five peatlands and three hydromorphic mineral sites located ill the St. Lawrence Lowlands of Quebec (Canada). The mixed wood stands studied are dominated by balsam fir (Abies balasamea (L.) Mill.). eastern white cedar (Thuja occidentalis L.). and red maple (Acer rubrum L). Results indicate that. 10 years after clearcutting, water table levels in undrained plots are still 5 to 7 cm higher than the pre-cut levels. The slight recovery in water table level plateaued after the third year. Rainfall interception by vegetation was also monitored. and after 10 years had reached nearly 50% of the pre-cut rate. The immediate water table drawdown following drainage mitigated watering-up within 40 m of a ditch. The persistent watering-up observed in this study should encourage using sylvicultureal systems adapted to boreal forested wetlands in order 10 prevent productivity loss and stand conversion. Copyright (C) 2008 John Wiley & Sons. Ltd. },
    KEYWORDS = { SPRUCE STAND; DRAINAGE; GROWTH; PEATLANDS; SEEDLINGS; DEPTH; ESTABLISHMENT; INTERCEPTION; TEMPERATURE; MANAGEMENT },
    OWNER = { brugerolles },
    TIMESTAMP = { 2008.11.17 },
}

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