presentation of water erosion.ppt mmmmmm

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1. Water Erosion
“Itisthedetachment,transportation&
depositionofsoilparticlesbytheforceof
waterfromoneplacetoanother.”
“Itisthemovementofsoilbyrainwater
includingmeltedsnow,runningrapidlyover
exposedlandsurfaces.”

2. Factors Affecting Water Erosion
1. Climate.
Precipitation
Temperature
Wind
Humidity
Solar radiation

3. 2.Soil
Physical properties of soil such as texture,
structure etc.
Organic matter contents in soil.
Moisture contents in soil.
Soil density or compactness.
Chemical and biological characteristics.

4. 3. Vegetation
Reduce rain drop velocity.
Resist runoff
Increase infiltration
Enhance microbial activity.
Improve soil structure.

5. 4. Topography.
Degree of slope of an area
Length of slope of an area
Size and shape of water shed

6. Types of Water Erosion
1.Splash erosion 2.Sheet Erosion

7. 3.Rilly erosion4.Gully Erosion

8. Damages of Water Erosion
Loss of soil specially fertile layer
Low fertile soil decrease farmer income
Remove organic matter from the soil
Decrease infiltration capacity of soil
Increase runoff
Increase flood hazard
Damage the wild life fisheries etc
Fill up the streams and dams

9. Mechanism of Water Erosion
1. Detachment.
2.Transportation.
3.Deposition:.