The Forest Engineering Research Institute of Canada (FERIC) studied the feasibility of applying training strategies to bucking, and marking following falling but prior to yarding, to increase the amount of coarse woody debris retained in an old-growth stand. FERIC also assessed whether this method was an economically feasible way to reduce delivery of non-merchantable wood to log sortyards and therefore reduce the costs associated with yarding, loading, trucking, and disposing of non-merchantable wood. FERIC's study was part of a larger project initiated by the B.C. Ministry of Forests and Weyerhaeuser Company Limited on coarse woody debris retention.
The Mountain Alternative Silvicultural Systems (MASS) study is a multi-disciplinary, multi-agency project initiated both for silvicultural and social reasons. MacMillan Bloedel Limited, the Canadian Forest Service, and FERIC cooperated in the study, with participation by the University of Victoria and the University of British Columbia. Three alternative treatments representing a range of canopy removal levels - uniform shelterwood, green tree retention, and patch cutting - were implemented in the research area, located on the east coast of Vancouver Island. FERIC monitored the productivity and cost of the falling and forwarding operations, and measured site disturbance and coarse woody debris for each harvesting treatment. The results of FERIC's study are presented.
The trend in harvesting systems has been towards increasing mechanization. In 1995, FERIC with funding from Canada's Model Forest Program, monitored harvesting on two operations - a conventional system (hand faller/hand delimber/line skidder) and a mechanical system (feller-buncher/grapple skidder/stroke delimber) - to document the costs and productivities, employment levels, fuel consumption, and site disturbance.
This report documents the costs and productivities of group-selection harvesting of one-third of a stand in an old-growth cedar–hemlock forest in the interior wet-belt of British Columbia while preserving caribou habitat values. The group-selection harvesting was compared to clearcut and single-tree selection treatments. Harvesting costs were strongly influenced by the merchantability of the harvested stems and the criteria for selecting trees to be harvested. The single-tree selection had the lowest cost because of the selection criteria and merchantability while the group selection had the highest cost. The group selection treatment’s harvesting costs were about 22% greater than for the clearcut treatment.
Bundle hooks are the connector for a reusable wire rope bundling system. Side-loading bundle hooks differ from traditional (centre loading) hooks because they have an opening which permits side loading of the wire rather than the threading of it. This feature allows damaged or repaired sections to be by-passed. The side-loading hooks performed acceptably in field-testing (except for some quality control problems). One less wire repair or one more service cycle is required to justify the additional cost of the side-loading hooks.
The Forest Engineering Research Institute of Canada (FERIC) took part in the Ecosystem Management by Emulating Natural Disturbance (EMEND) multi-disciplinary research project. FERIC's part of the project was to conduct a cost and productivity study in the harvesting treatment component, which encompassed four stand types and six retention levels. This report describes the harvesting operations; presents the productivities and costs of the felling, skidding, and processing phases; and describes factors affecting the harvesting activities.