Pettigrew1998

Reference

Pettigrew, D. (1998) Perte de masse anhydre et dynamique des éléments chimiques du bois raméal fragmenté de tremble. Master's thesis, Université Laval. (URL )

Abstract

Fresh ramial wood chips from aspen (Populus tremuloides Michx.) were applied to the forest floor surface of a recently clear-cut site for a 2-year study of decomposition. Chips enclosed in mesh bags were installed on control and amended treatments (300 or 600 m$\sp3$ ha$\sp{-1}),$ and weight loss and changes in carbon fractions and macro-nutrients were measured during about 2 years. During this period, the substrate lost 38% of its initial mass, was an important source of bases cations, and became a sink for nitrogen (N) and phosphorus. Substrate N dynamics were dominated by immobilization during this 2-year field incubation, however net N release was initiated earlier in the amended treatments than in the control treatments. While the application of ramial chipped wood at the forest floor surface may greatly contribute to the resilience of the ecosystem following harvest, the labor and cost requirements of branch transformation remain a major limitation to such amendment.

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@MASTERSTHESIS { Pettigrew1998,
    AUTHOR = { Pettigrew, D. },
    TITLE = { Perte de masse anhydre et dynamique des éléments chimiques du bois raméal fragmenté de tremble },
    SCHOOL = { Université Laval },
    YEAR = { 1998 },
    NOTE = { CEFTMS, Camiré, C. and Munson, A.D., Denis Pettigrew. Thèse (de maîtrise) Pqdt Thèse (M.Sc.)--Université Laval, 1998. Bibliogr.: f. 83-94. Texte en anglais avec résumé en français et en anglais. Thèse. Foresterie et géodésie Camiré, Claude, directeur de thèse Munson, Alison, directeur de thèse },
    ABSTRACT = { Fresh ramial wood chips from aspen (Populus tremuloides Michx.) were applied to the forest floor surface of a recently clear-cut site for a 2-year study of decomposition. Chips enclosed in mesh bags were installed on control and amended treatments (300 or 600 m$\sp3$ ha$\sp{-1}),$ and weight loss and changes in carbon fractions and macro-nutrients were measured during about 2 years. During this period, the substrate lost 38% of its initial mass, was an important source of bases cations, and became a sink for nitrogen (N) and phosphorus. Substrate N dynamics were dominated by immobilization during this 2-year field incubation, however net N release was initiated earlier in the amended treatments than in the control treatments. While the application of ramial chipped wood at the forest floor surface may greatly contribute to the resilience of the ecosystem following harvest, the labor and cost requirements of branch transformation remain a major limitation to such amendment. },
    KEYWORDS = { Bois raméal fragmenté. Copeaux de bois (Amendements) Peuplier faux-tremble Résidus Sols forestiers Analyse },
    OWNER = { brugerolles },
    TIMESTAMP = { 2008.01.16 },
    URL = { http://proquest.umi.com/pqdweb?did=734140671&sid=2&Fmt=2&clientId=9268&RQT=309&VName=PQD },
}

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