Trembling aspen regeneration was studied in 2 types of partial harvest systems designed to harvest mature aspen but protect immature spruce and encourage natural aspen regeneration. Two partial harvest systems, where the residual aspen was either left in strips or was dispersed uniformly, were compared to traditional clearcuts. After the first and second year since harvest, aspen sucker density and growth was similar between the 2 partial harvests, but was much lower than in the clearcuts. However, in the partial cuts the regeneration density was very much dependent on the location relative to residual trees. The density of regeneration was inversely related to the basal area of residual aspen; however, sucker height was inversely related to the basal area of the residual spruce. Although there were adequate numbers of suckers after partial harvest, their viability and contribution to the long-term productivity of these mixedwood stands is not clear.Key words: silvicultural systems, forest management, residual canopy, white spruce, Populus tremuloides, Picea glauca, traffic RÉSUMÉLa régénération du peuplier faux-tremble a été étudiée dans le cas de deux modes de coupe partielle conçus pour récolter les trembles à maturité mais pour protéger les épinettes en croissance et favoriser la régénération naturelle du tremble. Deux modes de coupe partielle, où les trembles résiduels ont été retenus dans des bandes ou dispersés uniformément, ont été comparés à des coupes à blanc traditionnelles. Cependant, dans les coupes partielles, la densité de la régénération a été très dépendante de localisation relative aux arbres résiduels. Même si le nombre de drageons est adéquat après une coupe partielle, leur viabilité et leur contribution à long terme à la productivité de ces peuplements mélangés n' est pas évidente.
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