Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
Rainforests                                                         DeforestationYear 8 Geography- Topic 1 – Global Enviro...
DeforestationDeforestation is the process ofdestroying forest areasAccording to recent data, between2000-2005, over 10.4 m...
Deforestation  Brainstorm why the world’srainforests are being cut down
Deforestation                        Reasons for Deforestation                        Population                   DamLogg...
Deforestation - LoggingKilometres andkilometres oftrees have beencleared by largetimbercompanies withprofit a maindriver
Deforestation - Logging
Deforestation - Logging
Deforestation - LoggingBut it will just growback so why dowe need to worry?
Deforestation - LoggingBut it will just grow back so whydo we need to worry?It can take 100’s of years forregrowth and it ...
Deforestation - LoggingTwo options for the logger:1)Clear-Felling which  removes all trees over a  large area2)Selective L...
Deforestation - AgricultureShiftingCultivationThis involvesfarming in oneplace for a fewyears beforemoving on to anew site
Deforestation - Agriculture
Deforestation - AgricultureCash CroppingThis includesthings such ascoffee, rubberand tobacco
Deforestation - AgricultureCattle GrazingLarge areas of rainforest are cleared to becomepastures for cattle.Most cattle pr...
Deforestation – Population GrowthPopulation Growth & PovertyLimited amounts of rainforest cannot support theneeds of a gro...
Deforestation – Population Growth
Deforestation – MiningMiningLarge sections of rainforest areas are rich in mineralsand precious metals. In response, large...
Deforestation – DamsDamsDams are a serious threat to rainforests. Huge areasof rainforests are cut down to construct the d...
Deforestation – FireFireLoggers cut through the rainforest and set up loggingroads. These roads cut the rainforest into se...
What’s the Impact?What is theimpact?How doesdeforestationaffectrainforests?
What’s the Impact?Did you know that an average of 137species of life forms are driven into        extinction every day    ...
What’s the Impact?
What’s the Impact?Did you know that manyindigenous people havelost their homes as aresult of rainforestdestruction?Between...
What’s the Impact?
What’s the Impact?                   What’s the Impact of                     Deforestation?                              ...
True or False?1)Some species of bamboo have been found to  grow up to 91 cm’s per day in the rainforest2)Trees in tropical...
Upcoming SlideShare
Loading in …5
×

2011 year 8 geography - rainforests - deforestation

2,857 views

Published on

Published in: Technology
  • Be the first to comment

2011 year 8 geography - rainforests - deforestation

  1. 1. Rainforests DeforestationYear 8 Geography- Topic 1 – Global Environments - 2011
  2. 2. DeforestationDeforestation is the process ofdestroying forest areasAccording to recent data, between2000-2005, over 10.4 millionhectares of tropical rainforestswere destroyed each year
  3. 3. Deforestation Brainstorm why the world’srainforests are being cut down
  4. 4. Deforestation Reasons for Deforestation Population DamLogging Agriculture Mining Fire Pressure Building
  5. 5. Deforestation - LoggingKilometres andkilometres oftrees have beencleared by largetimbercompanies withprofit a maindriver
  6. 6. Deforestation - Logging
  7. 7. Deforestation - Logging
  8. 8. Deforestation - LoggingBut it will just growback so why dowe need to worry?
  9. 9. Deforestation - LoggingBut it will just grow back so whydo we need to worry?It can take 100’s of years forregrowth and it will never growback to its original beauty andvariety of plant and animal species
  10. 10. Deforestation - LoggingTwo options for the logger:1)Clear-Felling which removes all trees over a large area2)Selective Logging involves loggers selecting particular trees to be cut down with the idea to give the rainforest a better chance at growing back
  11. 11. Deforestation - AgricultureShiftingCultivationThis involvesfarming in oneplace for a fewyears beforemoving on to anew site
  12. 12. Deforestation - Agriculture
  13. 13. Deforestation - AgricultureCash CroppingThis includesthings such ascoffee, rubberand tobacco
  14. 14. Deforestation - AgricultureCattle GrazingLarge areas of rainforest are cleared to becomepastures for cattle.Most cattle produced is exported to wealthy countriesfor use in fast food outlets
  15. 15. Deforestation – Population GrowthPopulation Growth & PovertyLimited amounts of rainforest cannot support theneeds of a growing population.Many people turn to shifting cultivation and the useof trees as a source of fuel and building material
  16. 16. Deforestation – Population Growth
  17. 17. Deforestation – MiningMiningLarge sections of rainforest areas are rich in mineralsand precious metals. In response, large areas ofrainforests are cut down and the ecosystemdestroyed.
  18. 18. Deforestation – DamsDamsDams are a serious threat to rainforests. Huge areasof rainforests are cut down to construct the dam andlarge areas are flooded to create reservoirs
  19. 19. Deforestation – FireFireLoggers cut through the rainforest and set up loggingroads. These roads cut the rainforest into sectionsand they dry out. As a result, they are prone to fire
  20. 20. What’s the Impact?What is theimpact?How doesdeforestationaffectrainforests?
  21. 21. What’s the Impact?Did you know that an average of 137species of life forms are driven into extinction every day That’s over 50,000 per year This means a significant loss of biodiversity
  22. 22. What’s the Impact?
  23. 23. What’s the Impact?Did you know that manyindigenous people havelost their homes as aresult of rainforestdestruction?Between 1900 and1950, 87 indigenousgroups in Brazil weredestroyed
  24. 24. What’s the Impact?
  25. 25. What’s the Impact? What’s the Impact of Deforestation? Loss of homes Loss of Soil erosion and Changes to for indigenousBiodiversity loss of nutrients climate people
  26. 26. True or False?1)Some species of bamboo have been found to grow up to 91 cm’s per day in the rainforest2)Trees in tropical rainforests are so densely packed, that rain falling on the canopy can take up to 10 minutes to reach the ground3)The Rafflesia is the world’s largest single flower and releases a foul smell like rotting flesh

×