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Geography part II: Professor Kuhn
3. Forestry Resources
A) Natural Distribution
- Major part of our environmental imagination
- A flow resource, thus potentially sustainable
- 4 billion hectares (30% of land surfaces)
- Spread out differently by region
•Biomes: A large, biogeographically unit of land characterized by a particular
combination of animals, vegetation, and climate; for example, grassland or tundra.
•Boreal Forest : Cold environments: sub-artic; confers, supplies lumber and pulpwood
•Temperate forests : cold environments; mid latitudes; deciduous, original forest lost
to agriculture and settlement.
•Tropical forests: warm environments; low latitudes; evergreen broadleaf trees; rich
B) Change in Forest Cover
- Loss of forests (landscapes (occurred in the last 50 years)
- now 30% cover
- cleaved, fragmented or degraded
- spread of agriculture
- animal husbandry
- expansion of settlements
- deforestation: changing the land use of forests to something else
- Haiti: disintegrated economical due to deforestation
Forest area includes primary forests, modified natural forests, semi-natural forests,
productive forest plantations and protective forest plantations. Net change in forest area
takes into account afforestation.
•Primary and secondary forests:
- Primary forests: Uncut, ‘old growth’, frontier, ecologically intact forests (0% of
temperate; 60% of tropical)
- Secondary forests:
• Ecological succession after cutting
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