Historical reconstruction of long-term forest dynamics in southern Quebec to improve sustainable forest management

European colonization and industrial development have profoundly transformed the forested landscapes of north-eastern North America. Consequently, historical forest characteristics, such as forests prior to settlement and industrial exploitation (i.e. the presettlement forests), serve as a model for developing a sustainable forest management. In this project, we aim to reconstruct long-term changes in forest landscapes of southern Quebec.

Regional predictive mapping of paludification black spruce forests in the north eastern Canada using remote sensing and statistical modeling

As researchers at the UQAT we are currently undertaking with our partner, Tembec, a project on the regional mapping of the extent of the organic layer accumulation over time on the forest floor of the boreal black spruce forests (paludification) in the Abitibi and North of Quebec regions. Gaps that this project will address include exploring for the first time new remote sensing imagery (i.e., Landsat-8 and Sentinel) and alternate image analysis statistical approaches.

Vulnérabilité des forêts et des activités forestières aux changements climatiques

Les feux de forêts naturels sont les perturbations majeures à la base de la dynamique végétale boréale. Les changements climatiques induiront une augmentation des régimes de perturbations. Les régimes de perturbations, la structure et la composition forestière pourraient se diriger vers une variabilité naturelle différente de celle connue précédemment.

Développent d’outils innovateurs pour la caractérisation du bois et de la fibre du bois et leur impact sur la rentabilité financière des travaux d’aménagement forestier intensif

L’aménagement forestier intensif est parmi les alternatives pour assurer la pérennité des ressources pour l’industrie forestière. Cependant, peu d’information est disponible sur les effets de ces pratiques sur la qualité du bois et la valeur des produits. Ce manque d’information est dû à la nature destructive des essais de caractérisation des propriétés du bois. Ainsi, ce projet vise à développer des outils rapides et non destructifs pour mesurer les implications des pratiques d’aménagement forestier intensif sur les indicateurs de la qualité du bois et sur la valeur des produits.

Développement d’une nouvelle génération de composites bois-polymère

Le composite bois-polymère (CBP) est un matériau de construction fait de polymère chargé de particules ou fibres de bois. La popularité de ce matériau est grandissante, mais ses propriétés mécaniques le limite aux applications non-structurales.

Economic viability of an ecosystem-based management in an eastern Canadian boreal forest

New forest law in Quebec implemented since early this year requires the forest management companies to put ecosystem-based management in the center of their forest management strategies by designing the forest management activities to resemble closely the natural disturbances (e. g., clear cutting to emulate stand replacing disturbances and partial cutting for secondary disturbances). Partial cutting is expected to be intensified to meet this objective. However, we do not have enough experience to demonstrate that partial cutting is economically viable.

Residual white spruce growth responses following partial cutting treatments in boreal mixedwoods

The boreal mixedwood forests of the Abitibi region of Quebec are often characterized by a canopy of trembling aspen with shade tolerant species such as white spruce and balsam fir in the subcanopy. In many cases, harvesting has converted complex mixedwoods into simpler, even aged forests. Due to the differences in regeneration and tree growth, the white spruce is often of small merchantable size classes when the trembling aspen is ready for harvesting.

Improving the bending stiffness of multi-ply folding boxboard with maple HYP

BCTMP (Bleached chemi-thermo-mechanical pulp) or HYP (high-yield pulp) is an important sector in the Canadian market pulp business, and most of them has been exported to Europe and Asia and over half of it is used as middle-ply furnish in Folding Boxboard (FBB). FBB requires high bending stiffness for crush resistance, z-directional strength for preventing delamination, surface smoothness for good printing, and good die-cutting performance for conversion. Maple HYP has been known to be the premium pulp in the middle ply of FBB since it has a very high bulk.