CoteHendershotFylesEtAl1998

Référence

Cote, B., Hendershot, W.H., Fyles, J.W., Roy, A.G., Bradley, R.L., Biron, P.M. and Courchesne, F. (1998) The phenology of fine root growth in a maple-dominated ecosystem: Relationships with some soil properties. Plant and Soil, 201(1):59-69.

Résumé

A two-year study was undertaken in a maple-dominated watershed of southern Quebec, Canada, to examine relationships between trends in fine root growth, stem diameter growth, soil moisture, soil temperature, mineralized-N and extractable-P. Until September, soil temperature was consistently higher in 1995 than in 1994. Apart from the first sampling in mid-May, soil moisture was higher in 1994 than in 1995. In 1994, most fine roots were produced before leaf expansion, whereas in 1995, fine root production peaked in July. Annual fine root production was estimated to be 2.7 times higher in 1994 than in 1995. Stem growth was strongly associated with the seasonal and annual variation in soil temperature. Root and diameter growth were asynchronous in 1994 but not in 1995. Fine root production was associated with two groups of variables: a soil fertility (mineralized-N and extractable-P) group and a physical soil environment (moisture and temperature) group. Our results are consistent with the negative effect of high soil-N fertility on fine root production but are inconclusive as to the positive effect of high soil-P fertility. Soil conditions that are detrimental to root growth such as high N availability and anaerobiosis could modify the normal dynamics of fine root growth.

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@ARTICLE { CoteHendershotFylesEtAl1998,
    AUTHOR = { Cote, B. and Hendershot, W.H. and Fyles, J.W. and Roy, A.G. and Bradley, R.L. and Biron, P.M. and Courchesne, F. },
    TITLE = { The phenology of fine root growth in a maple-dominated ecosystem: Relationships with some soil properties },
    JOURNAL = { Plant and Soil },
    YEAR = { 1998 },
    VOLUME = { 201 },
    PAGES = { 59-69 },
    NUMBER = { 1 },
    NOTE = { 0032079X (ISSN) Cited By (since 1996): 16 Export Date: 26 April 2007 Source: Scopus CODEN: PLSOA doi: 10.1023/A:1004351705516 Language of Original Document: English Correspondence Address: Cote, B.; Dept. of Natural Resource Sciences; Macdonald Campus of McGill Univ.; 21 III Lakeshere Road Ste-Anne-de-Bellevue, Que. H9X 3V9, Canada; email: coteb@nrs.mcgill.ca References: Axelsson, E., Axelsson, B., Changes in carbon allocation patterns in spruce and pine trees following irrigation and fertilization (1986) Tree Phys., 2, pp. 189-204; Bartsch, N., Response of root systems of young Pinus sylvestris and Picea abies plants to water deficits and soil acidity (1987) Can. J. For. Res., 17, pp. 805-812; Bevington, K.B., Castle, W.S., Annual root growth pattern of young citrus trees in relation to shoot growth, soil temperature, and soil water content (1985) J. Am. Hort. 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    ABSTRACT = { A two-year study was undertaken in a maple-dominated watershed of southern Quebec, Canada, to examine relationships between trends in fine root growth, stem diameter growth, soil moisture, soil temperature, mineralized-N and extractable-P. Until September, soil temperature was consistently higher in 1995 than in 1994. Apart from the first sampling in mid-May, soil moisture was higher in 1994 than in 1995. In 1994, most fine roots were produced before leaf expansion, whereas in 1995, fine root production peaked in July. Annual fine root production was estimated to be 2.7 times higher in 1994 than in 1995. Stem growth was strongly associated with the seasonal and annual variation in soil temperature. Root and diameter growth were asynchronous in 1994 but not in 1995. Fine root production was associated with two groups of variables: a soil fertility (mineralized-N and extractable-P) group and a physical soil environment (moisture and temperature) group. Our results are consistent with the negative effect of high soil-N fertility on fine root production but are inconclusive as to the positive effect of high soil-P fertility. Soil conditions that are detrimental to root growth such as high N availability and anaerobiosis could modify the normal dynamics of fine root growth. },
    KEYWORDS = { Maple Moisture Phenology Root growth Soil fertility Temperature fine root maple root growth soil fertility soil property Canada, Quebec Acer },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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