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Factors Influencing Soil Formation

Select Subject  |  Geography


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Factors Influencing Soil Formation

Question

Explain four factors that influence soil formation.

Answer

  • Parent rock
  • - Nature of the rock influences the rate of weathering
    - The rock determines the soil texture e.g., large-grained rocks produce large-grained soils

  • Living organisms
  • - They assist in the breaking down of rocks through burrowing
    - The roots of bigger plants break up the soil as they grow and allow water to pass through

  • Topography
  • - It determines the rate of weathering e.g., steep slopes encourage a high rate of weathering
    - It influences soil depth e.g., gentle slopes have deep soils while steep slopes have thin soils
    - It influences soil drainage e.g., where land is flat, soils are poorly drained

  • Climate
  • - Affects the rate and type of weathering that takes place
    - Determines the rate of leaching
    - Elements of climate i.e., Temperature accelerates weathering leading to soil formation

  • Time
  • - For soil to reach maturity, time is required