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Preserving Landscapes

Preserving Landscapes. Forestry Management. Forestry Management . Demand for timber 1630 – 46% is forested 1907 - 34% is forested Silviculture Practices Harvest and move on Gifford Pinchot: First US Chief Forester Manage as Renewable Resource Manage for sustained yield

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Preserving Landscapes

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  1. Preserving Landscapes Forestry Management

  2. Forestry Management • Demand for timber • 1630 – 46% is forested • 1907 - 34% is forested • Silviculture Practices • Harvest and move on • Gifford Pinchot: First US Chief Forester • Manage as Renewable Resource • Manage for sustained yield • What does a healthy forest look like?

  3. Renewable only if managed that way

  4. Forest structure

  5. Forestry Management • Silviculture practices • Suppress all fires at all costs • Mann Gulch fire 1949: 13 men died • Smokey the Bear: symbol for fire suppression • Yellowstone: 1988 Review fire suppression practices • Manage for ecological or economic needs: Even or uneven aged forest • Even aged: difference between oldest and youngest tree is less than 20% of rotation. • 30 yrs – 24 yrs = 6 6/45 = .13 • Clear cuts, seed tree (if fast regeneration), shelter wood • Un-even aged has at least 3 class of tree ages ( 10-20 years) • Selection, Individual, seed tree( if slow regeneration) • Ecological management practices emulate natural disturbances • Leave legacies: snags, felled trees, dominant species • Retention patterns • Thinning • Forest regeneration • Artificial or natural

  6. Tree stand types Even aged stand Uneven aged stand

  7. Amount of trees removed by various silviculture practices

  8. Snags are left for cavity nesting birds

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