Geography Sec 1

1. Chong Boon
Secondary School
Sec 1 Geography
Unit 3
Section 4

2. Learning Questions
1. Where can we find
deforestation?
2. Reasons for
deforestation?
3. Measures to lower
impact of deforestation.

3. Global distribution of
deforestation
•Over 320 sq km of rainforests
disappear each day.
•Deforestation occurs at all places
where we find rainforests.
•Key areas include the Amazon
Basin and Indonesia.

4. Key causes for deforestation
•Need for space
• Residential purposes
• Industries
• Agriculture
•Need for resources
• Mining
• Logging

5. Residential Space
•With development, more space is
needed to house the increasing
population.
•Cities grow into the surrounding
areas.
•Rainforest often suffer as
conservation is not taken to be as
important as development.

6. Sao Paolo Brazil

7. Industries
•Industries need space.
•Cheapest land found in unused
areas.
•Rainforests cleared to provide
land for industries.

8. Typical Processing Plant

9. Agriculture
• Subsistence Agriculture
• Farming solely for the purpose of
consumption
• Tribal communities and small
homesteads
• Deforests small plots of land to feed
family

11. Agriculture
• Commercial Agriculture
• Large-scale farming for profit
• Big companies buying/renting land from
government
• Destruction of large areas of rainforests
• Replacement of rainforest with grass to
allow for grazing
• Replacement of rainforest with
commercial crops like Soy Beans /
Sugarcane / Corn / Oil Palm

13. Cattle ranching
• Raising of cattle on large farms.
• 80% of amazon deforestation is for cattle
ranching.
• Most beef produced is exported to USA
and Britain.
• Overseas demand leading to local
deforestation.

15. Logging
•The cutting down of timber
•High demand of wood for
furniture, firewood and
construction
•Demand in Developed Countries
(DCs) push the supply from the
Less Developed Countries (LDCs).

17. Mining
•Extraction of precious metals and
gemstones
• Gold, Copper, Tin, Diamonds, etc
•Forests above the mines are cleared.
•Forests leading to the mines are
cleared for road construction to
transport equipment into the mines
and the materials out of the mine.

19. Turn to Pg 96 Now!
•Read the news article on Pg
96.
•From the article, what are the
causes of deforestation?
•What is the relationship
between deforestation and
‘people moving into cities’ ?

20. Get into pairs / groups of 2 to 4
•Send 1 representative to collect some
resources
•You have 10 minutes to discuss and
write down your answers on the cards
given.
•We will display the cards at the back
of the room later.