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Forestry & Society Boreal Forests

Forestry & Society Boreal Forests. HORT/RGSC 302 J.G. Mexal Spring 2005. Forestry & Society Boreal Forests:Outline. Definition Diversity Important Species Carbon budgeting. Forestry & Society World Forest Zones/ Sharma 1992. Boreal. Temperate mixed. Temperate evergreen. Tropical rain.

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Forestry & Society Boreal Forests

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  1. Forestry & SocietyBoreal Forests HORT/RGSC 302 J.G. Mexal Spring 2005

  2. Forestry & SocietyBoreal Forests:Outline • Definition • Diversity • Important Species • Carbon budgeting

  3. Forestry & SocietyWorld Forest Zones/ Sharma 1992 Boreal Temperate mixed Temperate evergreen Tropical rain Tropical dry Tropical deciduous

  4. Forestry & SocietySpecies Diversity- Tree Species • Canada >50oN Picea (4 species) • Canada >45oN Pinus (9 species) • USA 25-50oN Pinus (37 species) • Mexico 15-30oN Pinus (80 species) • Brazil 10oS 100’s species /ha • Tierra del Fuego55oS Nothofagus (3 species)

  5. Forestry & SocietyBoreal Forests: Definition • Northern Arctic Forests • Location: >45oN latitude • also Nothofagus forests in So. Amer. & NZ • Precipitation:40-90 cm(15-35”)[snow] • Temperature: mean annual T =-3 to -10oC • Soils: highly glaciated, thin

  6. Forestry & SocietyBorealForests-Growth Comparison Black Spruce 163 yrs Eucalyptus 2yrs 25 mm 25 mm

  7. Forestry & SocietyBoreal Forest of North America 60o 50o Science Findings 40:2001

  8. Forestry & SocietyBoreal Forests-Important Canadian-US Species • Black spruce (Picea mariana) • White spruce (Picea glauca) • Balsam fir (Abies balsamea) • Jack pine (Pinus banksiana) • Aspen (Populus tremuloides) • Tamarack (Larix laricina) • Paper birch (Betula papyifera)

  9. Forestry & SocietySE Alaska Forests (Tongass NF)/PNW-GTR 609, 2004

  10. Forestry & SocietySE Alaska Forests/PNW-GTR 609, 2004

  11. Forestry & SocietySE Alaska Forests/PNW-GTR 609, 2004

  12. Forests of Russia/J.For. 101(4):34:2003 Boreal forest/taigas Temperate broadleaf & mixed forests Temperate conifer forest

  13. Forests of Russia/J.For. 101(4):34:2003 Removal (KK m3/yr) Major Species: Pinus silvestris, Larix sibirica Larix gmelinii, Picea obovata Abies sibirica, Pinus sibirica Betual pendula, Populus tremula Year

  14. Forestry & SocietyBoreal Forest of North America Natural Regeneration of black spruce ~5cm/yr ~15cm/yr Science Findings 40:2001

  15. Forestry & SocietyBoreal Forests-Important Canadian-US Species /Coombes 1992 Picea mariana Black spruce

  16. Forestry & SocietyBoreal Forests-Important Canadian-US Species/Coombes 1992 Larix laricina

  17. Forestry & SocietyBoreal Forests-Important Canadian-US Species/Coombes 1992 Betula papyrifera Paper birch

  18. Forestry & SocietyBoreal Forests-Southern Hemisphere Species/Coombes 1992

  19. Forestry & SocietyNothofagus of Tierra del Fuego, Chile

  20. Forestry & SocietyTropical Forests- Boreal Forests/ Longman & Jenik 1987 Annual Carbon Capture

  21. Forestry & SocietyForests of the World/ Litter & nutrient residence time (yrs)/Kozlowski & Pallardy 1999

  22. Forestry & SocietyForest Productivity Comparison

  23. Forestry & SocietyBoreal Forests--Review Questions • Compare and contrast the carbon budgets of a tropical, temperate, and boreal forest. Don’t memorize numbers, just give concepts and relative differences. • What is a boreal forest? Where does it occur? What is the climate? • What are some of the major species in a boreal forest?

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