Topic Summaries

Deforestation

GCSE > Biology > WJEC > GCSE Biology Topic Summaries > Biodiversity and environmental management > Deforestation
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  • Large-scale deforestation in tropical areas has occurred to:
    • Provide land for cattle and rice fields.
    • Grow crops for biofuels.
  • Environmental implications of deforestation:
    • Increase in carbon dioxide in the atmosphere as there are fewer trees to take in carbon dioxide for photosynthesis.
    • Burning of trees increases atmospheric carbon dioxide.
    • Reduces biodiversity as it destroys species of tree and removes habitat for several species of animals.
    • Causes drier climates as there is less transpiration by trees, resulting in drier soils, fewer roots, and greater risk of erosion and landslides.

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