Geography: Paper 3- Forests Under Threats; Biomes, Factors and Forest Layers
- Created by: Leah Tailor
- Created on: 13-05-21 09:24
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- Geography Paper 3: Forests Under Threats
- Global and Local Factors affecting Biomes
- Global
- Laitude: Coordinate which specifies north-south positions on the Earths Surface
- Air Pressure: Force exerted on a surface by the air above as gravity pulls it to Earth
- Local
- Soil Type: The properties the soil has which has an effect on the organism (tree/plants)
- Altitude: Refers to the height above sea leave
- Precipitation: Different types and amounts of plants grow in different parts of the biomes due to amount of rainfall received
- Global
- Biomes
- Tropical Rainforest
- 20-29*c mean temperature
- Orangutans, snakes, frogs and toads, jaguars
- 1800 to 2500mm of rainfall anually
- America, Africa, Asia
- Desert
- 20-25*c to 43.5-49*c
- Africa (Sahara), Mexico, Australia and Southwestern US
- Occur at low latitudes
- Cacti, camels, arid environment
- Taiga
- Subarctic region- Northern hemisphere
- Thick forests with lynxes, deer's, salamanders
- 21*c in summer and -1*c in winter
- Tundra
- Average winter temp -34*c/ summer temp 3-12*c
- Dwarf shrubs, grasses and timber
- Polar bears, Arctic Foxes, Reindeers
- Alaska, Canada, Russia, Greenland
- Temperate Forest
- Between tropical and boreal regions- in the temperate zone
- 25% of the world's forest area
- US, Canada, Europe, China, parts of Russia, Japan
- 30-60 inches yearly precipitation and 10*c
- Tropical Rainforest
- Forest Layers
- Canopy
- Vines/different tree branches
- Mixed vegetation
- Monkeys etc
- Emergent
- Consists of the tallest trees
- 60m tall
- trap more sunlight to help make food to grow
- Forest Floor
- Dark, hot, damp
- 2% sunlight gets through
- Mostly insects and dead leaves found here
- Understory
- Bats, snakes, lizards
- Layer of vegetation especially plants
- Can extend 40 feet with branches growing
- Canopy
- Global and Local Factors affecting Biomes
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