Soil Erosion

2. • Soil erosion is one form of soil degradation
• Soil erosion is a naturally occurring process
that affect all land forms
• It may be slow process that continues
relatively unnoticed or can occurring at an
alarming rate causing serious loss of topsoil

3. TYPES OF EROSION
 SHEET EROSION
 GULLY EROSION
 CHANNEL EROSION
 RILL EROSION

4. SHEET EROSION
The removal of a uniform layer of soil from
the surface by runoff
GULLY EROSION
The accumulation of water in narrow cuts which
removes the soil to considerable deapth.
These cuts can be several feet deep.

5. CHANNEL EROSION
The scouring of stream banks by increased water flows
DRILL EROSION
The process where numerous small cuts are formed

6. CAUSES
Natural process
Wind
Water flowing down

7. Human activities
Over cropping
Deforestation
Over stocking
 overgraing

8. PROBLEMS
Loss of valuable topsoil
Damage to fields
Dicrease in plan productivity
desertification

9. REMEDIES
Avoid overgrazing
Conserve wetlands
Terracing can also be affective
Large steps cut in to a hillside
Encourage water infiltrationdicrease in plant
 productivity