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Using FVS to Develop and Test Structure Based Management

Using FVS to Develop and Test Structure Based Management. Pam Overhulser, ODF Mark Rasmussen, MB&G 2/14/07 FVS Conference. Outline. What is the planning problem? How does FVS fit into the planning system? How was FVS used? Improvements. ODF planning area . 632,000 acres High site

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Using FVS to Develop and Test Structure Based Management

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  1. Using FVS to Develop and TestStructure Based Management Pam Overhulser, ODF Mark Rasmussen, MB&G 2/14/07 FVS Conference MB&G & ODF

  2. Outline • What is the planning problem? • How does FVS fit into the planning system? • How was FVS used? • Improvements MB&G & ODF

  3. ODF planning area • 632,000 acres • High site • Fire history • Ownership history • ODF structure • Seven districts • Foresters and managers, long tenure in place MB&G & ODF

  4. ODF Forest Plan Summary • Structure Based Management • accelerate growth of large diameter trees; • develop multi-storied canopy • produce commercial crops of timber • shifting mosaic of complex structure -- no set asides • Habitat Conservation Plan • Targets/Outputs • 50% complex structure target • Maximize even-flow timber volume MB&G & ODF

  5. Complex planning questions • Strategic • Structure v. revenue v. set asides • Agree to HCP? • Tactical • What to do about SNC? • SBM silvicultural methods • Set harvest levels • Operational • Adjacency constraints • Road systems • Owl clusters • Location of complex forests MB&G & ODF

  6. Analytical process MB&G & ODF

  7. H&H Model Schedule harvest units Operationally feasible solution Grow Stands MB&G & ODF

  8. Planning project stats • Districts/models: 7 • Acres: 632,070  • Stands:  6,673  • Harvest units:   14,306  • Polygons: 313,283  • Yield tables:   79,600 • Coefficients:   108,564,472 • Budget: $2 million  • Time: 36 months  MB&G & ODF

  9. Why FVS? • Evaluated 4 mature stand models, and 3 young stand models • Data source • Support and documentation • Silviculture • Model behavior • Flexibility • Growth models evaluated four times – south coast, northwestern districts, western cascades, southern Oregon MB&G & ODF

  10. Using FVS • Calibrate FVS • Choose taper system, merch specs • Define structure classes • Develop SBM cutting algorithms • Develop SBM regimes • Build, evaluate, report yields MB&G & ODF

  11. Using FVS: Calibrate FVS MB&G & ODF

  12. Using FVS: Volume calculations • PN, WC. SORNEC • Flewelling taper equations • Track volume and value by species by product/size/grade • Merch specs District Astoria Elliott Log Length 40’ 32’ Minimum Top DIB 5” 5” Trim Allowance 12” 12” Stump Height 1’ 1’ Minimum Log Length 12’ 12’ Minimum DBH 8” 8” Defect by age MB&G & ODF

  13. Using FVS: Define structure classes MB&G & ODF

  14. Using FVS: Develop thinning specs • ODF financing, Auto Mark thinning contracts, 10 years of sales MB&G & ODF

  15. Using FVS: Define a set of regimes MB&G & ODF

  16. Using FVS: Make and evaluate yields • YTG Tools MB&G & ODF

  17. MB&G & ODF

  18. Planning results MB&G & ODF

  19. Improvements for next time • FVS • Thinning: clumpy v. uniform • Growth: genetic gain • Silviculture: Young stand and small tree growth • ODF • Decay Model: Track snag and down wood components • Reprod • SBM • Structure definition: thresholds v. similarity coefficient • Inventory • Yield projections: stand v. strata MB&G & ODF

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