defroestation in the amazon g1-oc class yisel & maggie may,2010
TRANSCRIPT
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DEFROESTATION IN THE AMAZON
G1-OC Class
Yisel & Maggie
May,2010
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Quiz• Which country has the biggest portion of the
Amazon rainforest?
- Brazil• What amount of the world’s fresh water is in the
Amazon River basin?
- 20%• How many countries have part of the Amazon
within their borders?
- nine• Which is the only river in the world longer than
the Amazon.
- Nile in Africa
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Agenda
• Background
• History
• Causes
• Effects
• Solutions
• Conclusion
• References
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What is deforestation?
• By logging and burning
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Where is the Amazon?
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Lungs of our planet
• The ninth largest if it were a country
• Recycling carbon dioxide into oxygen
• More than 20% of Earth’s oxygen
• 10 million species : plants, animals, and insects
• One-fifth of the world’s fresh water
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History
1500 1600 1700 1800 1900 2000
Europeans
1888 1912
Rubber production
1967 1988
Government policies
1994
Environmental movement
1995
new government incentives
2003
Brazilian cattle exports outpaceDomestic markets
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Breakdown of Causes
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Government policies
• Land grants for deforesting and colonizing
• Credit and tax incentives for cattle ranching
• Roads built through the Amazon that increase access
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Other causes
• Historic Factors : war, industrialization, colonization, etc.
• Population Growth : more people → more inhabited land → more deforestation
• Urbanization : city area increases → forest recede
South America has highly urban populations. Urbanization levels are expected to reach 85 per cent by the year 2025
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Other causes• Climate change : climate change → local vegetation
recede → deforestation
• Green house effect
• CO, Emission increase
cause : the clearing of land for cattle, the need for land in increased soybean production, illegal logging.
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Effects
Rondônia, Brazil. Top:June 1985Bottom: August 1992
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Effects
• Loss of biodiversity : no trees → no shelter → no animals
• Soil erosion : no trees → no beneficial soil
• Ground water table : no soil or less soil → retain no or less water → the ground water levels
reduced
• Floods : no trees → no (major) obstruction to flowing water →no chance to percolate into the ground→ cause
flood
• Drought : water gone by flood / evaporation → drought
• Less carbon conversion : contributing to global warming
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Solutions
• Reforestation• Legislation
• Wildlife sanctuaries• Cities
• Incentive to Corporate• Commercial Forest Plantations
• Water Management
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What can be done? • Avoid beef products
from Brazil!• Recycling : more recycle →
less disposable products → decrease deforestation
• Gas fireplaces : Use gas → less wood → deforestation decrease
• International Workshop on Solutions to Deforestation for Cattle Expansion is on Facebook
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Conclusion
• Background
• History
• Causes
• Effects
• Solutions
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References• http://www.mongabay.com/brazil.html• news.mongabay.com/2005/0827-brazil.html• http://www.earthportal.org/?p=143• http://www.rain-tree.com/facts.htm• www.unep.org/geo2000/ov-e/ioe9.htm• www.realtruth.org/080207-001-weather.html• www.france24.com/en/node/4934720• www.all-creatures.org/hope/gw/02_bio-fuels.htm• http://en.wikipedia.org/wiki/Amazon_Rainforest• http://www.buzzle.com/articles/deforestation-solutions.html• http://www.facebook.com/pages/International-Workshop-on-
Solutions-to-Deforestation-for-Cattle-Expansion/117348320487
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