Canadian Forest Service Publications

Using alternative harvesting techniques to protect the boreal mixedwood understorey: evaluation of harvesting productivity and costs. 2004. Sauder, E.A.; MacIsaac, D.A. Advantage Newsletter, Volume 5(12). Forest Engineering Research Institute of Canada (FERIC), Vancouver, BC. 44 pages.

Year: 2004

Issued by: Northern Forestry Centre

Catalog ID: 26888

Language: English

Availability: PDF (request by e-mail)

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Abstract

In the Lower Foothills natural subregion of west-central Alberta, the Forest Engineering Research Institute of Canada (FERIC) studied harvesting operations on nine blocks where understorey immature white spruce stems were retained as mature aspen and poplar stems were harvested, and compared the monitoring results to two clearcut harvesting operations. This report also presents pre-harvest and post-harvest stand conditions, and windthrow data for Year 5 following the first entry. Harvesting occurred in two entries: the first in the fall and winter of 1993-1994 and the second in the fall of 1998. The contractors used their conventional full-tree mechanized harvesting equipment, consisting of feller-bunchers, grapple skidders, and roll-stroke delimbers working at roadside decks. This harvesting study is part of a larger research project that has the overall objective of developing cost-effective silvicultural and harvesting prescriptions that retain significant portions of the immature white spruce component in boreal mixedwood stands.