GEO 131 Lecture Notes - Lecture 17: Acer Macrophyllum, Thuja Plicata, Mountain Pine Beetle

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Document Summary

350 000 ha attacked by mountain pine beetle. Widespread bc climate is warming so they don"t die. Standing dead dry wood easily causes forest fires by spark. 2-6 mil ha burned annually (naturally) > only ~1 mil ha harvested annually. Most man made and forest disturbances followed w/ 2 succession. Knocks back to a younger forest (doesn"t destroy everything). Forests provide us timber, important to society and standard of living. Are also natural ecosystems that are severely altered by timber harvesting. Practice of forestry has had to balance these 2 identities in trying to manage forest resources. Paper needed everywhere (books, paper, toilet paper, towels). Low biodiversity -> re-planted and structured forests, with same species and same parents. Art and science of controlling establishment growth, composition, and quality of forest vegetation for the full range of forest resource objectives. Application of the principles of forest ecology to a stand of trees to help meet specified objectives.

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