Cut-to-length partial-cutting trial in the Okanagan

Partial cutting is required in areas where forest cover must be maintained to meet silvicultural objectives or to support non-timber values. The Okanagan has an arid climate and water quality is often a concern, requiring cut-and-leave patterns to meet hydrological considerations. Large areas of mature pine are harvested in sections (two or more passes) to meet cutblock size and green-up requirements. Second-pass lodgepole pine stands are often overmature, and are subject to stand disintegration through insect and disease attack, thereby reducing the timber volume available for utilization. This study looks at the economics and site effects of partially cutting stands with a cut-to-length (short-wood) system. Harvester/forwarder harvesting systems are costly to purchase and maintain, but have potential to increase operator safety, eliminate roadside debris piles, and minimize site disturbance. The goal of this study was to identify some of the limitations of the equipment. The objectives of the study were to: