Deforestation+p.2 - THE ROLE OF FORESTS: Deforestation and...

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THE ROLE OF FORESTS: Deforestation and its effects in the environment
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Today: Causes of deforestation Convenient truth movies p.1 and p.2
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Cause of Deforestation Human Factors Population pressures Logging Agriculture Slash and Burn Clear cutting Pasture / Grazing Mining, reservoirs and HEP (hydro-electric power) Settlement /urban development and transport Fuel
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"Slash and burn" Agriculture Old practice of land shifting Clear a small forest patch Grow crops until soil is exhausted Leave degraded land Clear new patch (abandoned land recovers) Problem: usually labeled as ecologically destructive Increased population reduces time for regeneration desertification
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Slash and Burn
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Slash and Burn Source: National Geographic
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These images show the conversion of grasslands into agricultural fields 1975: The agricultural expansion is just beginning 2000: This image shows the degree to which farmlands have expanded Converted Lands of Narok, Kenya
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This note was uploaded on 11/14/2011 for the course GEA 2284 taught by Professor Annaszyniszewska during the Fall '11 term at University of Florida.

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Deforestation+p.2 - THE ROLE OF FORESTS: Deforestation and...

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