Mixedwood forests in northern BC landscapes are complex, spatially and temporally dynamic, and diverse in composition and structure. This strategy provides the background and outlines a framework which will support development of a successful program for management of mixedwoods. The process described is incremental: management activities advance as the knowledge base grows. This requires the use of the best available science; including both the acquisition of new knowledge, extension of new and existing knowledge, and field testing and monitoring. The current AAC for the Dawson Creek TSA is 1,733,033 cubic metres per year, of which 846,533 are attributed to coniferous leading stands and 886,500 cubic metres are from deciduous leading stands. In the timber supply analysis, coniferous volume in deciduous leading stands contributes to the overall deciduous harvest forecast and vice versa. Also about 113,500 ha of the timber harvesting land base are in the Agriculture Land Reserve and most of this area is deciduous stands. Current mixedwood silviculture practices are described for SK, MB, AB, MN and BC. The level of detail of mixedwood management varies widely by jurisdiction. Of all the jurisdictions examined, Saskatchewan appears to be the most advanced in the development of mixedwood management practices. Innovative mixedwood management is practiced by those who are supplying deciduous and coniferous fibre to processing plants or where the license holder is responsible for all regeneration on the license area. This creates an incentive to manage for mixedwoods. Mixedwood standards and guidelines are in place for some jurisdictions. They are in the final stage of drafting in other jurisdictions and need to be refined for British Columbia. In all jurisdictions, attention is paid to conifer regeneration to ensure its longevity on the landscape. Desired future forest condition (DFFC) should be the basis for setting the target for any silviculture ground rule or standard. DFFC is determined based on a variety of biological, ecological, economic, and social factors. In SK and MB, actual stand types can differ by one designation (DFFC changes) from the target stand type without penalty to the licensee. This is to recognize the dynamics of natural processes in boreal mixedwoods. Application of existing knowledge will allow mixedwood management initiatives. In short, a change in perspective is needed and must include overcoming the traditional conflicts, and removing administrative constraints (policy and stumpage impediments), and undertaking mixedwood management in the TSA using an adaptive management approach. Notwithstanding the impediments, there are silviculture systems that can and have been successfully applied to boreal mixedwoods. Since future forest condition is an overarching objective, new guidelines and standards are needed which are based on ecological and management objectives, not minimums imposed by legislation. Riverside Forest Products, in the southern BC interior, has developed an innovative management approach that is based, in part, on DFFC. Dawson Creek TSA, Mixedwood Silviculture Strategy March 24, 2003 The review identified three general areas where effort will facilitate mixedwood management in the TSA. The areas are (1) incentives to manage mixedwoods, (2) cooperative management, and (3) modeling. The main recommendations for the Dawson Creek TSA, SFMP, mixedwood subcommittee have been broken down into short and long-term objectives. Chris Hawkins
Hawkins, Christopher David, University of Northern British Columbia. 2003. Innovative Mixedwood Silviculture Strategies for the Dawson Creek TSA. Forest Investment Account (FIA) - Forest Science Program. Forest Investment Account Report. FIA2003MR176
Topic: FLNRORD Research Program
Keywords: Forest, Investment, Account, (FIA), Biological, Diversity, British, Columbia
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