Caractérisation de la proportion de bois d'aubier et de duramen chez le bouleau à papier (Betula papyrifera Marsh.)
|Abstract:||This study aims to characterize sapwood and heartwood proportions in White Birch (Betula papyrifera Marsh.) in relation with foliage, crown and stem characteristics. The results indicate that sapwood proportion is significantly related to foliage following the pipe model theory. Furthermore, the probability of heartwood presence at stump height is higher for trees with high stem taper. Sapwood and heartwood proportions are also tree age dependant. In addition, the vertical development of heartwood within the stem seems to be affected by the stump effect and by the live crown base. Heartwood shows a maximum value at 9% relative tree height and decreases afterwards. Finally, almost all the heartwood volume is located under the live crown base.|
|Document Type:||Mémoire de maîtrise|
|Open Access Date:||11 April 2018|
|Collection:||Thèses et mémoires|
All documents in CorpusUL are protected by Copyright Act of Canada.