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Forests

Forests. Importance of Trees. Oxygen Water Food Preventing Erosion Effect on Climate Wildlife Protection Human Needs Carbon Cycle. Forest Ecosystem. Forest Ecosystem. Forest Regions of Canada. Forest Regions of Canada. Common Tree Species. Forest Regions of Ontario.

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Forests

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  1. Forests

  2. Importance of Trees • Oxygen • Water • Food • Preventing Erosion • Effect on Climate • Wildlife Protection • Human Needs • Carbon Cycle

  3. Forest Ecosystem

  4. Forest Ecosystem

  5. Forest Regions of Canada

  6. Forest Regions of Canada

  7. Common Tree Species

  8. Forest Regions of Ontario

  9. Forest Regions of Ontario

  10. Tree Classification

  11. Tree Identification • Leaf (in summer) • Buds (in winter) • Bark • Shape (Spire or Plume shape) • Smell (eg. Cedar)

  12. Deciduous Twig: Alternate Leaf Scar showing vascular bundle arrangement

  13. Deciduous Twig: Opposite

  14. Coniferous Leaves Pine Spruce Cedar

  15. Deciduous Leaves

  16. Tree Measuring http://www.forestryforum.com/members/donp/3treehgtclcs.htm

  17. Suunto Tree Height Device

  18. Forest Management Cycle

  19. Methods of Harvesting Forests Clear-cutting Shelterwood Cutting Selective cutting

  20. Methods of Harvesting Forests Clear Cutting Loggers remove every tree and leave a barren landscape. When replanted, the new forest grows uniformly in species and size = Plantation or Monoculture

  21. Methods of Harvesting Forests Shelterwood Cutting Involves thinning the forest and then cutting some on a 10 year cycle. Shelterwood method is often used in forests that have grown and aged evenly Small groups of seed bearing trees are left so the area will regenerate.

  22. Methods of Harvesting Forests Selective Cutting Only mature trees of the desired size, type or quality Another shot of the same stand in an area that has been finished--except for picking up a few logs.  The stand is about 65 years old.

  23. Forest Succession

  24. Forest Succession

  25. Secondary Succession Causes: Land clearing Cultivation Forest Fire Clear Cutting Natural Disasters Disease Climate Change Invasive Species

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