EXTREME environments -rainforests
- Created by: 12cpar01
- Created on: 14-11-16 16:55
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- extreme environments RAINFOREST
- threats
- flooding
- removing trees also removes the natural flood barrier
- logging
- the main cause of desertification
- most of it is illegal
- the main cause of desertification
- agriculture
- removing trees to plant crops suchas palm oil
- ranching
- cutting down trees to make way for cattle ranches
- roads
- used to get the logs out
- population
- growing population=more housing needed
- hydro electric power
- using water from a river to create cheap energy
- have to cut down trees first
- using water from a river to create cheap energy
- debt
- Brazil is in great debt because of its poor economic choices
- infastructure
- lighting, roads, power used to work in the rainforest
- mining
- cur down trees to dig for coal, oil and gold as well as diamonds
- flooding
- management
- national parks
- a protected area of land
- no development allowed
- can never loose its status
- a protected area of land
- national forest policy
- set up inn 1977
- teaches the local community the importance of the forest
- stops them cutting down trees
- set up inn 1977
- selective management
- 2 years before felling= research
- 1 year before=mark trees
- felling
- 3-6 months after research best trees to replace it with
- 5-10 years later replant trees
- 30-40 years later = replant trees
- 5-10 years later replant trees
- 3-6 months after research best trees to replace it with
- felling
- 1 year before=mark trees
- if people do not do this, it is illegal logging
- 2 years before felling= research
- eco tourism
- making money whilst using the land in a responsible and sustainable way
- national parks
- rainforest structure
- emergent trees
- 100% sunlight
- tallest trees
- canopy
- 75% sunlight
- drip tips
- 75% sunlight
- under canopy
- 50% sunlight
- vines
- 50% sunlight
- shrub layers
- 25% sunlight
- shrubs
- 25% sunlight
- emergent trees
- case study and adaptations
- adaptations
- plant
- big leaves=more sunlight +more water
- strong short roots
- tall plants=more sunlight
- animal
- camouflage = avoids predators
- hunt at night
- climb trees
- plant
- case study= brazil
- 96% of tribal groups lost
- deforestation rates increased by 26% since 1960
- 1/3 of all species found in rainforest
- high poverty levels
- 1/3 of world's oxygen in forest
- adaptations
- why are they hot and wet?
- hot
- low latitude 5 to 15 degrees
- but mainly along to equator
- small surface area to heat
- atmosphere is thin
- solar ray's are more concentrated
- low latitude 5 to 15 degrees
- wet
- warm air rises so condensation clouds form
- Hadley cell
- prevailing winds
- brings moisture from ocean leading to rain
- convectional rainfall
- warm air rises
- forms clouds
- rain
- forms clouds
- warm air rises
- warm air rises so condensation clouds form
- hot
- location
- 5 to 23.5 degrees North and south of equartor
- most of the rainforests are in south America and indonesia
- threats
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