1 / 35

Young-Stand Management Options and their Implications for Wood Quality and Other Values

Young-Stand Management Options and their Implications for Wood Quality and Other Values. by Jamie Barbour, PNW Research Station; Richard Zaborske, USFS Washington Office; Michael H. McClellan, PNW Research Station; Linda Christian, Region 10; Don Golnick, Region 10. Road Map for Talk.

bette
Download Presentation

Young-Stand Management Options and their Implications for Wood Quality and Other Values

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Young-Stand Management Options and their Implications for Wood Quality and Other Values by Jamie Barbour, PNW Research Station; Richard Zaborske, USFS Washington Office; Michael H. McClellan, PNW Research Station; Linda Christian, Region 10; Don Golnick, Region 10.

  2. Road Map for Talk • Wood quality what is it & what endures? • SEA information (empirical & simulated) • My views on what available information means

  3. Southeast AlaskaCurrent Situation • Resource = old-growth • Issue = costs • Challenges • too much low quality • how to manage young stands

  4. Current ResourceLog Grade Check Scale 1999 + 1st quarter 2000 Spruce = 17% of harvest Hemlock = 55% of harvest

  5. Southeast AlaskaFuture Situation • Resource = young-growth • Issue = costs • Challenges • less high grade • competing in world markets

  6. Wood Quality What’s Important? • Knots • Tree size • Soundness • Growth rate • Stem straightness • Basic wood properties • Proximity to processing facilities & markets

  7. Wood Quality CharacteristicsWhat’s Especially Important in SEA? • Knots • Tree size • Soundness • Growth rate • Stem straightness • Basic wood properties • Proximity to processing facilities & markets

  8. Heat Energy production Chemicals Size and Quality Particle and Fiber Panel Products Pulp and paper Structural Products Posts & Poles Veneer Appearance Products Lumber Processing Streams

  9. Open Grown Tree Tree from Dense Stand MW MW JW JW Wood Quality and the Crown

  10. 4” 6” 8” S.Str. No. 1 1” 1.5” 2” No. 2 No. 3 Knot Size, Lumber Width, & Lumber Grade

  11. Existing Information onYoung-Growth • Green and Kilborn, lumber grade and log grade. • Wang et al., thinning and mechanical properties. • Christensen et al., thinning and lumber grade.

  12. Stiffness (MOE) and ThinningSoutheast Alaska Wang et al. 2001 Control Light Medium Heavy Thinning Intensity

  13. Published Value Southeast Alaska Young-GrowthSpruce Mechanical Properties Christensen et al., 2002

  14. Published Value Southeast Alaska Young-GrowthHemlock Mechanical Properties Christensen et al., 2002

  15. Southeast Alaska Young-GrowthVolume Recovery Christensen et al., 2002

  16. Southeast Alaska Young-GrowthSitka Spruce Lumber Grades Christensen et al., 2002

  17. Southeast Alaska Young-GrowthHemlock Lumber Grades Christensen et al., 2002

  18. Current Study • Simulate 4 prescriptions using FVS • Three harvest ages • Two site classes

  19. Current StudyAssumptions • Generalize Christensen et al. results • Branches last 50 to 80 years • Lumber or veener will be important

  20. Ketchikan Area Site Class 60 and 90Cubic Foot Log Volumes 70 Years 110 Years 150 Years

  21. Ketchikan Area Site Class 60 and 90Normalized Log Volumes 70 Years

  22. Ketchikan Area Site Class 60 and 90Normalized Log Volumes 110 Years

  23. Ketchikan Area Site Class 60 and 90Normalized Log Volumes 150 Years

  24. MBF/ac So What! • PCT A & PAS always produce most volume • Some differences even out over time • Important differences remain among site classes

  25. Ketchikan Area Site Class 60 and 90Lumber Revenues 70 Years 110 Years 150 Years

  26. Ketchikan Area Site Class 60 and 90Normalized Lumber Revenues 70 Years

  27. Ketchikan Area Site Class 60 and 90Normalized Lumber Revenues 110 Years

  28. Ketchikan Area Site Class 60 and 90Normalized Lumber Revenues 150 Years

  29. $/ac So What! • Volume buys a lot • Volume is not everything

  30. Ketchikan Area Site Class 60 and 90Average Lumber Revenues per MBF 70 Years 150 Years 110 Years

  31. What’s All This Mean?Branch Size • Trees grown at wide initial spacings or thinned early tend to have large branches • Large branches limit wood product potential

  32. What’s All This Mean?Mechanical Properties Mechanical properties of both spruce and hemlock suffer from wide early spacings Later thinning does not seem to adversely affect mechanical properties

  33. What’s All This Mean?Lumber Grades Earlier heavier thinnings result in larger trees sooner but only average lumber grades Later lighter thinnings result in smaller trees with better lumber grades If our assumptions are correct the no thinning prescription might result in the best quality at 110 or 150 years.

  34. What’s All This Mean? For private landowners it comes down to questions about cash flow and return on investment For public landowners it comes down to questions about jobs, subsidies, and ecological function

  35. Jamie Barbour 503-808-2542 jbarbour01@fs.fed.us

More Related