Résultats après 5 ans d'un essai de coupe de jardinage dans une érablière

Abstract

To study the effects of selection cutting and to determine the optimal residual basal area after such cuttings, an experimental area was established in Sainte-Véronique (Quebec) in 1983. Five-year results indicate that the gross rate of growth increases when residual basal area decreases. The best net annual basal area growth lies between 0.40 and 0.43 m2/ha in selection plots; this is almost twice the growth of control plots. Sugar maple regeneration is excellent no matter the residual basal area. Selection cuttings also resulted in a good yellow birch regeneration, and survival is better, after 5 years, in high residual basal area plots. Yellow birch regeneration is almost absent in control plots. When all factors (growth in basal area, regeneration, and tree injuries) are considered, block 2, with a residual basal area of 19.3 m2/ha, gives the best results after 5 years.