Geography: Paper 3- Forests Under Threats; Biomes, Factors and Forest Layers

?
View mindmap
  • 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
    • 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
    • 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

Comments

Similar Geography resources:

See all Geography resources »See all Ecosystems resources »