Types of Soil erosion gully  by  Charles Monari

6

What is soil erosion?

Soil erosion is the carrying away of the top soil Name types of erosion

Types of soil erosion

  • Splash erosion
  • Wind erosion
  • Rill erosion
  • Gully erosion

Splash erosion; Splash erosion occurs when raindrops hit bare soil

Wind erosion

Rill erosion

Gully erosion is the removal of soil along drainage lines by surface water runoff.

Gully erosion

V-shaped gullies

U-shaped gullies

Controlling of gully erosion

1.Gully erosion is controlled by building gabions also called porous dams.
2.Porous dams or gabions allow water to pass but hold the soil
3.Porous dams or gabions reduce the speed of the flowing water
 

 

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Gabions or porous dam

 

Other ways of controlling soil erosion

  • Mulching

  •  Cover cropping

  • Contour farming

  • Terracing

  • Tree planting

  • Controlled grazing

  • Cut off drains

  • No burning vegetation

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Questions

  1. What is soil erosion?
  2. Name four types of soil erosion.
  3. Gully erosion is caused by ______water
  4. List five methods of controlling soil erosion

Answers  

  1.         Soil erosion is the carrying away of the top soil
  2.         Splash, rill, sheet and gully erosion
  3.         Gully erosion is caused by run-off water
  4.         List five methods of controlling soil erosion(answers next slide)

4. Five methods of controlling soil erosion

  •        Building gabions
  •        Terracing
  •        Cover cropping
  •        Mulching
  •        Contour farming
  •        Tree planting
  •        Avoid burning vegetation
  •        Build cut off drains
  •        Controlled grazing



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