1. CAUSES OF DEFORESTATION

2. Increase demand for agricultural landuse
Growth of settlement
Improved transportation network
Growth of industries
Forest fires

3. Problems Loss in biomass
Weight of all organisms in KILOCALORIES of stored energy
Total amount of food, ability of forest to support life.
Rainforest is rich with biomass
Destruction of forest reduces biomass, affecting foodchain

4. Wide range of plants & animal biodiversity
Kalimantan is the richest with high biodiversity
Destruction of rainforest leads to extinction of species
Extinct vs endangered

5. Changes in nutrient cycle
Forest cover produces leaf litter
Leaf litter decomposed into humus(fertile, yucky soil)
Low forest cover=less leaf litter = less soil nutrients
Leaching?

6. Changes in the quantity of water
Plants photosynthesis and produces water vapour (transpiration)
Water vapour form clouds and increase rain
What happens when there is less forest cover?

7. Changes in the quality of water
Less forest cover(vegetation) means there is more exposed soil.
Soil erosion leads to mud going into rivers
Increases acidity of water
Can you think of how murky waters affect the ecosystem?

8. Air Pollution
Removal of forest cover by burning produces dust, smoke, soot to be released
Haze
Can you suggest health problems related to haze?

9. Real world situation today?