Plant & Soil Sciences eLibraryPRO
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Lesson Outline

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Erosion

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Summary

  • Erosion is the wearing away of the land surface by agents that abrade, detach, remove, and deposit the material elsewhere. Erosion has especially been accelerated by human or anthropogenic activities.
  • Erosion impacts soil, water, and air quality.
  • Some farming practices reduce water quality as topsoil, rich in nutrients, is detached, transported and deposits into water bodies.
  • Urbanization is another contributor to erosion as the construction and movement of material creates conditions for soil erosion.
  • Erosion is commonly broken down into wind and water erosion though energy is the main factor in both.
  • Climate, soil properties, and land management (along with others) influence water and water erosion.

     

    Factors Influencing Erosion
    Water Erosion
    Wind Erosion
    climate
    climate
    soil properties: aggregation /soil moisture
    soil properties
    soil cover
    soil cover
    land management
    land management
    topography
    soil surface roughness
     
    unsheltered distance
     
    wind velocity and turbulence
  • The three processes in water and wind erosion are detachment, transport, and deposition.
  • Types of water erosion include splash, sheet, rill, and gully.
  • Types of wind erosion include suspension, saltation, and creep.

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