Deforestation

shaik umme salma
aem,mfk 1710
college of fisheries, manglore

1. DEFORESTATION

2. INTRODUCTION
•The destruction of 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 cause of 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 cut down 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 search for materials like gold, copper, and
aluminum
•This clears the land, including the forest that
occupies it
•Contaminates the ecosystem with runoff

8. Dams
•Generate hydroelectric energy
•Flood forests that are upstream
•Trees decay slowly when dams are built in tropical
waters, depriving the water of oxygen

9. Roads
•Building the roads themselves destroys trees in the
way
•Provides access to a larger area of the forest for
loggers, miners, and farmers

10. Effects of
Deforestation
•Disrupts water cycle and carbon cycle
•Loss of biodiversity
•Soil Erosion
•Poor water quality

11. Water Cycle
•If the trees are
gone, there will be
less transpiration
and less water
released into the
hydrologic cycle

12. Carbon Cycle
CO2
02
•If trees 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
•Soil erosion 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 Deforested Areas
•The Amazon
•Africa
•Southeast Asia

17. The Amazon
•World’s largest 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 Southeast Asia
•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 Can Help
•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 TH
A
NK
U
PRESERVE OUR FOREST