PretzschHeymPinnaEtAl2014

Référence

Pretzsch, H., Heym, M., Pinna, S., Schneider, R. (2014) Effect of variable retention cutting on the relationship between growth of coarse roots and stem of Picea mariana. Scandinavian Journal of Forest Research, 29(3):222-233. (URL )

Résumé

Silviculture heading for structural heterogeneity creates many single trees standing at stand margins, inner edges or in remnant tree groups. As they played just a minor role in the age class forest, the growth behaviour of strongly released trees is rather unexplored. Here we show how retention cutting, presently spreading in the boreal of Québec province, affects stem and coarse root growth of remained single black spruce [Picea mariana (Mill.) Britton]. Increment cores from roots and stems of 125 trees show that retention cutting triggers coarse root growth of the remaining trees. Compared with reference trees retention trees accelerate root in relation to stem growth. Mean and variability of the root–stem allometry significantly rise after retention cutting. The found acceleration of root in relation to stem growth means mechanical stabilisation of the retention trees and corroborates the retention cutting method. Evaluation of silvicultural treatments can be incomplete and misleading as long as they are just based on aboveground reactions and neglect root growth.

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@ARTICLE { PretzschHeymPinnaEtAl2014,
    AUTHOR = { Pretzsch, H. and Heym, M. and Pinna, S. and Schneider, R. },
    TITLE = { Effect of variable retention cutting on the relationship between growth of coarse roots and stem of Picea mariana },
    JOURNAL = { Scandinavian Journal of Forest Research },
    YEAR = { 2014 },
    VOLUME = { 29 },
    PAGES = { 222-233 },
    NUMBER = { 3 },
    ABSTRACT = { Silviculture heading for structural heterogeneity creates many single trees standing at stand margins, inner edges or in remnant tree groups. As they played just a minor role in the age class forest, the growth behaviour of strongly released trees is rather unexplored. Here we show how retention cutting, presently spreading in the boreal of Québec province, affects stem and coarse root growth of remained single black spruce [Picea mariana (Mill.) Britton]. Increment cores from roots and stems of 125 trees show that retention cutting triggers coarse root growth of the remaining trees. Compared with reference trees retention trees accelerate root in relation to stem growth. Mean and variability of the root–stem allometry significantly rise after retention cutting. The found acceleration of root in relation to stem growth means mechanical stabilisation of the retention trees and corroborates the retention cutting method. Evaluation of silvicultural treatments can be incomplete and misleading as long as they are just based on aboveground reactions and neglect root growth. },
    DOI = { 10.1080/02827581.2014.903992 },
    EPRINT = { http://dx.doi.org/10.1080/02827581.2014.903992 },
    OWNER = { nafon9 },
    TIMESTAMP = { 2014.06.19 },
    URL = { http://dx.doi.org/10.1080/02827581.2014.903992 },
}

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