2. How different human activities cause
soil erosion?
•Short Sighted Agricultural
Practices
•Excessive Grazing
•Overuse Of Pesticides
•Deforestation

3. How different human activities cause
soil erosion?
SHORT SIGHTED AGRICULTURAL PRACTICES
Short-sighted agricultural practices, such as not allowing fields to
lie fallow and ploughing too frequently, contribute heavily to soil
loss
EXCESSIVE GRAZING
Excessive grazing is another major contributor to soil damage, in
part because cattle compact the soil, making it less able to retain
water. In heavily trampled areas, erosion and drought are often
the result. Overgrazing also destroys native grasses, allowing
weeds with deeper roots, such as sagebrush, to replace them.

4. OVERUSE OF PESTICIDES
Chemical pesticides help avert crop losses, but they can also cause
long-term soil damage by destroying beneficial insects and the
micro-organisms necessary to replenish soil nutrients. Pesticide
vapour and run-off poison wildlife, both nearby and downstream,
and are major polluters of lakes and underground aquifers.
DEFORESTATION
Deforestation, one of the principal causes, occurs when forested
areas are logged or cleared and much of the already thin earth
erodes away. The resulting silt clogs rivers, lakes, coast estuaries,
and coral reefs, killing fish and damaging aquatic ecosystems.
Often the remaining soil can support crops for only a year or two
before being unusable.
•

5. Soil Erosion
Overuse Of
Pesticides

6. How soil erosion adversely affect the
environment?
Soil erosion adversely affect –
• Crop Productivity
• Increase of water runoff
• Decreasing the water infiltration
• Decreasing the water-storage capacity

8. • Plant trees
• Terraces
• No-till farming
• Contour ploughing
• Crop rotation
• Soil PH
• Water the soil

12. Contour ploughing