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Deforestation
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- 2. INTRODUCTION • The destructionof forests and trees • Has many harmful effects on the environment • Happening too quickly to recover
- 3. CAUSES OF DEFORESTATION •Agriculture. • Logging. • Mining. • Dams • Roads.
- 4. AGRICULTURE • Leading causeof deforestation • Farmers need land to grow crops and raise animals • They remove forest land to make room for farms • They use slash and burn to perform deforestation • Slash and burn is cutting away and burning the forest
- 6. Logging • Loggers cutdown trees for their wood • Logging is illegal in many areas, like National Parks • The wood is used for many purposes, including paper production and as a building material
- 7. Mining • Miners searchfor materials like gold, copper, and aluminum • This clears the land, including the forest that occupies it • Contaminates the ecosystem with runoff
- 8. Dams • Generate hydroelectricenergy • Flood forests that are upstream • Trees decay slowly when dams are built in tropical waters, depriving the water of oxygen
- 9. Roads • Building theroads themselves destroys trees in the way • Provides access to a larger area of the forest for loggers, miners, and farmers
- 10. Effects of Deforestation • Disruptswater cycle and carbon cycle • Loss of biodiversity • Soil Erosion • Poor water quality
- 11. Water Cycle • Ifthe trees are gone, there will be less transpiration and less water released into the hydrologic cycle
- 12. Carbon Cycle CO2 02 • Iftrees aren’t there, carbon dioxide will accumulate and contribute to the greenhouse effect
- 13. Loss of Biodiversity •Rainforests contain over half of the world’s species • Loss of trees -> loss of primary consumers -> loss of secondary consumers -> … • When trees are removed, all rainforest life is affected
- 14. Soil Erosion • Soilerosion is when soil is removed by natural causes • When trees are gone, their roots cannot hold the soil in place • Reduces soil’s capacity to hold water • Makes agriculture difficult
- 15. Poor Water Quality •Soil erosion lets dirt enter runoff, lowering water quality • Makes for bad living conditions for fish • A reduced amount of fish can cause ramifications all the way up the food chain
- 16. Examples of DeforestedAreas • The Amazon • Africa • Southeast Asia
- 17. The Amazon • World’slargest tropical rainforest • Located in South America • 1/5 of the world’s plants and 1/10 of animals are found here
- 18. Rainforests in Africa •World’s second largest rainforest • Almost all of the forest on Madagascar is gone • Madagascar too contains a large amount of biodiversity that has been compromised
- 19. Rainforests in SoutheastAsia • Indonesia is covered in rainforest • Has been deforested just like the Amazon and in Africa • It is hot and humid the whole year
- 20. Environmentally Friendly Paper •This could be recycled paper or paper made from bamboo • Again, this pressures paper making companies into using recycled paper and bamboo paper
- 21. How You CanHelp • Buying sustainably grown foods • Buying environmentally friendly paper • Donating to an organization that stands up for forests
- 22. Donating to Organizations •Organizations like Greenpeace fight damage to the environment like deforestation • Since they receive money, these organizations can influence corporations and politicians to make environmentally friendly policies
- 23. T THANK U PRESERVEOUR FOREST