Deforestation
Biology: AQA GCSE Higher, topic 7.3.5
Deforestation
Deforestation is the cutting, clearing and removal of forests in order to free up land for biofuels (fuels derived from living matter) as well as cattle and rice fields. Negative consequences associated with deforestation include:
Carbon dioxide
- The burning of trees and decomposition of wood increases the rate of carbon dioxide that is released into the atmosphere.
- As less photosynthesis is taking place, less carbon dioxide can be removed from the atmosphere.
Biodiversity
- Deforestation destroys habitats. This causes biodiversity to be lost.
Ecosystem services
- Deforestation causes a loss of ecosystem services provided by forests, such as erosion prevention, flood control and food provision.
Methane
- Forests are often chopped down to be replaced by agriculture, with the purpose of growing rice or farming cattle.
- These activities produce methane, which is a greenhouse gas.
Test yourself on Deforestation
Why does deforestation reduce the rate at which carbon dioxide is removed from the atmosphere?
Why does deforestation lead to a loss of biodiversity?
Why does deforestation increase the rate at which carbon dioxide is released into the atmosphere?
Why do atmospheric carbon dioxide levels rise overall after deforestation?