Impact of a Regeneration Method and Vertical Position on Juvenile Wood Properties of Jack Pine in Northwestern Ontario
Keywords:
Mechanical wood properties, conifer species, silvicultural practices, regeneration methods, forest industry, boreal forests, northwestern OntarioAbstract
The effects of regeneration methods and vertical positions on three juvenile wood properties of 25-yr-old jack pine grown in the Boreal forests of northwestern Ontario were studied. Modulus of elasticity and modulus of rupture in static bending and specific gravity were determined from clear wood specimens of three vertical positions of trees selected from four stands that were aerial-seeded, Bräcke-seeded, planted, and postfire naturally regenerated. Juvenile wood properties among the four regeneration methods were not significantly different, however, they were found to vary significantly among the vertical positions for three of the methods: aerial-seeded, Bräck-seeded, and postfire natural stands. The wood properties of juvenile jack pine were quite variable, irrespective of the regeneration method, but there is a substantial potential in separating jack pine logs along the stem for various uses based on the regeneration method.References
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