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Tropical Red Soils

Tropical Red Soils . Continuous leaf fall in the forest throughout the year giving a thick layer of plant litter Rapidly broken down by organisms and humid conditions High temperatures encourage chemical action causing bed rock to break down

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Tropical Red Soils

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  1. Tropical Red Soils

  2. Continuous leaf fall in the forest throughout the year giving a thick layer of plant litter • Rapidly broken down by organisms and humid conditions • High temperatures encourage chemical action causing bed rock to break down • Weathering breaks down iron oxide giving it a reddish colour • Soil is heavily leached due to heavy rainfall

  3. Under normal conditions tropical red soils are very fertile • When forest are cut down they lose their source of humus • Heavy rains leach any remaining nutrients • Soil is eventually washed away

  4. Natural Vegetation and Soil

  5. Soil influences vegetation by its ability to retain water • Fertile soils have many nutrients including nitrogen, calcium and potash • Acidic soils lack lime, this limits the amount of vegetation they can support • Deep soils support vegetation with long roots such as ash, oak and pine Soil influences vegetation

  6. Vegetation provides the plant litter to form humus • Vegetation reduces the effects of leaching • Vegetation cover slows down or prevents soil erosion as the roots bind the soil together Vegetation influences soil

  7. Describe the influence of climate in the development of tropical red soils • Describe one way in which soil influences vegetation and one way vegetation influences soil Junior Certificate exam questions

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