SEEDLING ROOTS AND FOREST FLOOR - MISPLACED AND NEGLECTED ASPECTS OF BRITISH-COLUMBIAS REFORESTATION EFFORT

Concepts of planted seedling root morphology and root location are dis cussed in the context of reforestation in British Columbia. Comparison of root form and location between natural and planted seedlings revea ls profound differences. Unnatural root morphology and delayed develop ment of nursery-produced rooting systems, coupled with current plantin g techniques that emphasize vertical orientation of roots in mineral s oil horizons, may exacerbate harsh microenvironmental site conditions. Inappropriate root systems may inhibit optimal seedling function and compromise long-term stand stability. The forest floor is seen as an a ppropriate rooting medium to which planted seedlings should be allowed ready access. A change in the biological geometry (direction and dept h of root development) of the planted root system may enhance survival , establishment, and growth. The promotion of more natural, lateral, s urface rooting at the organic/mineral soil interface is proposed. Site -specific root morphologies and planting strategies may be required.