Regeneration of coniferous crop species on high-brush hazard sites in the Vancouver Forest Region is complicated by vigorous regrowth of deciduous trees and shrubs following harvesting. Brush control measures applied on these sites are expensive and the use of herbicides is often restricted because of site proximity to watercourses or conflicts with other resource values. An alternative approach to regenerating western redcedar is to create mixed plantations that mimic the black cottonwood or red alder communities that develop during primary or secondary succession on these sites. The approach described in this report uses a nurse tree regeneration method where the shading effect of rapidly growing black cottonwood saplings suppresses the vigour of shade-intolerant shrubs, thus providing marginal growth conditions for shade-tolerant conifers such as western redcedar.
McLennan, D.S., Klinka, K.. 2015. Black Cottonwood - A Nurse Species for Regenerating Western Redcedar on Brushy Sites. British Columbia Ministry of Forests, Lands, Natural Resource Operations and Rural Development. FRDA Research Report. FRR114
Topic: FLNRORD Research Program
Keywords: Vegetation, Management
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