Aspen Bibliography

Uniform Shelterwood Cutting and Scarifying in White Spruce-Trembling Aspen Stands to Induce Natural White Spruce Regeneration, Manitoba and Saskatchewan

Document Type

Book

Journal/Book Title/Conference

Canada-Manitoba Partnership Agreement in Forestry Miscellaneous Report

Publisher

Natural Resources Canda

First Page

1

Last Page

58

Publication Date

1994

Abstract

Between 1962 and 1965 a series of operational-scale trials. involving a two-stage shelterwood harvesting system and scarification. to induce natural white spruce regeneration in boreal mixedwood stands was carried out in Manitoba and Saskatchewan. This report deals with stocking. density. and height growth of the white spruce regeneration and hardwood reproduction 22 to 24 years following establishment Impact of the 2nd cut on white spruce regeneratio~ stand development and biodiversity; and a comparison of alternate strip clear-cutting and scarification under the same conditions are also discussed. Five of the six trial areas met current provincial stocking standards. Areas were, overall. 75 % stocked (on a 10- m2 quadrat basis) with 4 600 white spruce and 2 310 hardwood stemslha averaging 1.6 and 4.9 m in height respectively. White spruce stocking varied between 24 and 61 %; averaging 44% while hardwood stocking ranged between 60 and 65%; averaging 62%. By including balsam fir regeneration and advanced growth. overall stocking increased to 77% and conifer stocking to 48%. Failure of one trial is attributed to inadequate scarifIcation (17 vs 29 - 42%). Criteria for successfully regenerating white spruce using the shelterwood harvesting system and scarifIcation are presented.

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