Impact of primary and secondary machinery tracks on fine root growth of sugar maple after selection cutting

Malo, Catherine et Messier, Christian (2011). « Impact of primary and secondary machinery tracks on fine root growth of sugar maple after selection cutting ». Canadian Journal of Forest Research, 41, pp. 892-897.

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Résumé

Selection cutting, where approximately 30% of the trees are removed every 30 years, is the main silvicultural treatment used in temperate deciduous forests of Quebec (Canada). Concerns have been raised that the use of heavy machinery is creating soil disturbances that are negatively affecting the growth and survival of remaining trees. The aim of the study was to determine if heavy machinery is affecting the growth, morphology, and architecture of sugar maple (Acer saccharum Marsh.) fine roots in and around machinery tracks left after selection logging. The study site, a sugar maple dominated stand, was located in southern Quebec. Root ingrowth bags and standard root cores were used to compare fine root growth, morphology, and architecture in and around machinery tracks one year after logging. Fine root growth of maple was reduced fivefold in both primary (multiple trip) and secondary (only one trip) machinery tracks compared with the control. There was a nonstatistical reduction in fine root growth within 1 m of the tracks. Because machinery tracks cover between 15% and 25% of a stand after selection logging, such reduction in fine root growth could be significant for the growth and survival of the remaining mature maple trees.

Type:	Article de revue scientifique
Mots-clés ou Sujets:	Machinery impact, Root growth of sugar maple, Selection cutting
Unité d'appartenance:	Centres institutionnels > Centre d'étude de la forêt (CEF) Faculté des sciences > Département des sciences biologiques
Déposé par:	Christian Messier
Date de dépôt:	29 nov. 2011 14:17
Dernière modification:	01 nov. 2014 02:20
Adresse URL :	http://archipel.uqam.ca/id/eprint/4270

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