deforestation

• what are the reasons for deforestation


  demand for timber , to make paper and cardboard , to clear land for farming ,to build new roads and for high value trees
• what is the definition of deforestation


  the removal of trees in a unsustainable way
• what are two types of high value trees

  teak and mahogany
• how does deforestation effect global climate change


  if trees are cut down less carbon dioxide is removed from the atmosphere by photosynthesis
• what can happen to the felled trees which will also increase the concentration of carbon dioxide in the atmosphere


  trees could be burned which will release carbon dioxide
• what effect will the destruction of habitats have on the biodiversity


  it will reduce biodiversity
• why is there an increase in soil erosion if trees are removed from an area


  there are no roots to hold the soil so it can easily wash away
• what can the removal of trees on higher slopes along side heavy rainfall lead to


  lowland flooding
• why is removal of top soil a particular problem


  top soil is fertile and the soil below isn't suitable for crop growth
• how does deforestation affect evaporation vs transpiration


  there will be increased evaporation from soil
• how does deforestation affect decreased oxygen in soil


  as the soil becomes wetter water fills the soil airspaces and the oxygen available for roots decreases
• how does deforestation affect soil temperature reduces


  it takes wet soil longer to warm up than dry soil, this means these soils are cold causing germination and root activity to decrease