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Rehabilitation of Northern Hardwood Stands Using Multicohort Silvicultural Scenarios in Québec

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We evaluated silvicultural scenarios for the rehabilitation of impoverished northern hardwood stands in Québec (Canada). The experiment comprises five treatments: a control, a hybrid single-tree and group selection (SC), two continuous cover irregular shelterwoods (CCIS) with respective residual basal areas (BAs) of 16 m2·ha−1 and 14 m2·ha−1, and an extended irregular shelterwood (EIS) with a residual BA of 14 m2·ha−1. American beech (Fagus grandifolia Ehrh) advance regeneration was removed with brush saws and the soil was mechanically scarified in all cutting treatments. Postcut values showed significant improvements of acceptable growing stock and a significant reduction of American beech; both effects were proportional to the intensity of removal. Simulated outcomes of the four scenarios were compared over a 120-year period. Results show that the EIS scenario should require a longer period to restore the desired uneven-aged stand structure; also, its harvests removed less BA of large-diameter trees than the SC scenario.
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Keywords: ecosystem-based management; high grading; multicohort management; northern hardwoods; rehabilitation silviculture; uneven-aged management

Document Type: Research Article

Publication date: 2014-05-01

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  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.

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