Dube1994

Reference

Dubé, S. (1994) Impacts de la coupe à blanc sur le régime hydrique du sol dans les milieux boisés à nappe phréatique élevée de la plaine du Saint-Laurent. Master's thesis, Université Laval.

Abstract

Clearcutting on wetlands of the St-Lawrence lowlands raised the water table levels on seven of the eight studied sites encompassing five forest types and four soil subgroups. The water table rise increased with the depth of the pre-cut water table levels. The summer mean and maximum rise were respectively 20 and 52 cm on a poorly drained mineral soil which had the lowest pre-cut levels. Due to the watering-up and capillary rise, the aerobic zone was reduced by an average of 17 cm on this site. Smallest rises, about 7 cm in average, were associated with high pre-cut water table on bogs and on fens. The lateral flow on fens did not reduce the watering-up as was hypothesized. The aerated zone of the upper peat layer was only reduced by few centimeters on those very wet sites. Reduced interception appeared to explain more than 50% of the watering-up.

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@MASTERSTHESIS { Dube1994,
    AUTHOR = { Dubé, S. },
    TITLE = { Impacts de la coupe à blanc sur le régime hydrique du sol dans les milieux boisés à nappe phréatique élevée de la plaine du Saint-Laurent },
    SCHOOL = { Université Laval },
    YEAR = { 1994 },
    NOTE = { CEFTMS, Plamondon, A.P., [microforme] / Stéphane Dubé. Thèse (de maîtrise) Thèse (M.Sc.)--Université Laval, 1994. Bibliogr.: f. 75-81. Microfiche (négatif) du ms. dactylographié. Ottawa : Bibliothèque nationale du Canada, [1994]. -- 1 fiche ; 11 x 15cm. -- (Canadian thèses = Thèses canadiennes) Thèse. Foresterie et géodésie Plamondon, André P., directeur de thèse },
    ABSTRACT = { Clearcutting on wetlands of the St-Lawrence lowlands raised the water table levels on seven of the eight studied sites encompassing five forest types and four soil subgroups. The water table rise increased with the depth of the pre-cut water table levels. The summer mean and maximum rise were respectively 20 and 52 cm on a poorly drained mineral soil which had the lowest pre-cut levels. Due to the watering-up and capillary rise, the aerobic zone was reduced by an average of 17 cm on this site. Smallest rises, about 7 cm in average, were associated with high pre-cut water table on bogs and on fens. The lateral flow on fens did not reduce the watering-up as was hypothesized. The aerated zone of the upper peat layer was only reduced by few centimeters on those very wet sites. Reduced interception appeared to explain more than 50% of the watering-up. },
    KEYWORDS = { Coupe à blanc Aspect de l'environnement Saint-Laurent, Basses terres du Zones humides Saint-Laurent, Basses terres du Eau souterraine Saint-Laurent, Basses terres du },
    OWNER = { brugerolles },
    TIMESTAMP = { 2008.01.17 },
}

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