BY5.8 Deforestation
- Created by: Yazmin Ali
- Created on: 21-06-16 23:37
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Deforestation
- trees being cut down faster than they can be regenerated naturally
- forests help to maintain the balance of CO2 and O2 in the atmosphere
reasons for deforestation:
- world demand for timber as a building material
- wood is used as a fuel
- land is cleared for farming
- new roads are built to provide a transport infra-structure
- demand for paper and packaging
consequences of deforestation:
climate change
- rate that CO2 is being removed from the atmosphere by photosynthesis is reduced by deforestation
- this had led to a globally massive reduction and contributes to global warming
destruction of natural habitats
- leads to a decrease in biodiversity
- estimated 50% of world sepeies live in the rianforest
- destruction of natural habiats may lead ot the less of medicinal properties of some tropical plants that may become extinct before heir clinical properties hvae been investigated
soil erosion
- digging anf ploughing of top soil assists the process of soil erosion
- removal of vegetation aggects regional climate by reducing rainfall and accelerating desertification
- deforestation of watersheds causes lowland flooding
- removal of vegetation on higher slopes of valleys means that heavy rain sweeps exposed soil to the flood plains
- on lower slopes plants would act as a sponge and soak up the heavy rainfall and water would be released into the souk
- due to the absense of plants only evpaoration is occuring
- this…
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