CamireCoteBrulotte1991

Référence

Camire, C., Cote, B. and Brulotte, S. (1991) Decomposition of roots of black alder and hybrid poplar in short- rotation plantings: nitrogen and lignin control. Plant and Soil, 138(1):123-132.

Résumé

Decomposition of the roots (0-2 mm, 2-5 mm and 5-10 mm) of Alnus glutinosa and Populus nigra × Populus trichocarpa was followed over a 462-day period in pure and mixed plantings in S Quebec. Small roots of alder had the highest initial concentrations of nitrogen and lignin, and lost 9 and 10% less mass than medium and large roots, respectively. Large roots of poplar had the highest lignin-to-nitrogen ratio and showed the smallest loss of mass over the total incubation period. Slow root decomposition of alder and poplar was characterized by a greater proportion of initial root N immobilized per unit of carbon respired. Lignin concentration in roots of alder and poplar increased rapidly at the beginning of the incubation. Results suggest that high N levels in roots of alder could contribute in slowing the rate of decomposition by allowing the formation of N-lignin derivatives and low N levels in roots of poplar may limit the growth of microorganisms and the rate of root decomposition. -from Authors

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@ARTICLE { CamireCoteBrulotte1991,
    AUTHOR = { Camire, C. and Cote, B. and Brulotte, S. },
    TITLE = { Decomposition of roots of black alder and hybrid poplar in short- rotation plantings: nitrogen and lignin control },
    JOURNAL = { Plant and Soil },
    YEAR = { 1991 },
    VOLUME = { 138 },
    PAGES = { 123-132 },
    NUMBER = { 1 },
    NOTE = { Cited By (since 1996): 18 Export Date: 26 April 2007 Source: Scopus Language of Original Document: English },
    ABSTRACT = { Decomposition of the roots (0-2 mm, 2-5 mm and 5-10 mm) of Alnus glutinosa and Populus nigra × Populus trichocarpa was followed over a 462-day period in pure and mixed plantings in S Quebec. Small roots of alder had the highest initial concentrations of nitrogen and lignin, and lost 9 and 10% less mass than medium and large roots, respectively. Large roots of poplar had the highest lignin-to-nitrogen ratio and showed the smallest loss of mass over the total incubation period. Slow root decomposition of alder and poplar was characterized by a greater proportion of initial root N immobilized per unit of carbon respired. Lignin concentration in roots of alder and poplar increased rapidly at the beginning of the incubation. Results suggest that high N levels in roots of alder could contribute in slowing the rate of decomposition by allowing the formation of N-lignin derivatives and low N levels in roots of poplar may limit the growth of microorganisms and the rate of root decomposition. -from Authors },
    KEYWORDS = { alder black alder decomposition hybrid poplar lignin nitrogen poplar Canada, Quebec Alnus glutinosa Populus nigra Populus trichocarpa },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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