CAUSES OF DEFORESTATION

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Presentation transcript:

CAUSES OF DEFORESTATION

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

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

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

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?

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?

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?

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

Real world situation today?