Canadian Forest Service Publications
Reproduction de l'épinette noire (Picea mariana) après coupe à blanc de superficie réduite. 1977. Frisque, G.; Vézina, P.E. Canadian Journal of Forest Research 7(4) : 648-655.
Issued by: Laurentian Forestry Centre
Catalog ID: 16340
Availability: PDF (request by e-mail)
Small clear-cuttings (elliptical, circular, and strip) were made in the commercial boreal forest in Quebec to improve black spruce (Picea mariana (Mill.) B.S.P.) reproduction. Five years after cutting, black spruce layers were as numerous as black spruce seedlings and total softwood reproduction average 26 710 stems per hectare (10 810 stems per acre) with 90% stocking. In some cases, white birch stems tripled between the 1st and 5th year after cutting, which may have an important effect on stand composition. Strip cuts gave more stems per hectare than circular or elliptical cuts but stocking was lower. Strips 40 m wide (130 ft) gave better results than those 80 m wide (260 ft). Stocking, although adequate in all these small clear-cuttings, appears to be a more critical factor in the success of softwood reproduction than is density.