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✅ In this video,
✔️ Class: 8th
✔️ Subject: Geography
✔️ Chapter: Land, Soil, Water, Nature Vegetation And Wildlife Resources
✔️ Topic Name: Degradation of Soil & Conservation Measures
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Soil erosion and depletion are the major threats to soil as a resource. Both human and natural factors can lead to degradation of soils. Factors which lead to soil degradation are deforestation, overgrazing, overuse of chemical feritilisers or pesticides, rain wash, landslides
and floods. Some methods of soil conservation are listed below:
Mulching: The bare ground between plants is covered
with a layer of organic matter like straw. It helps to
retain soil moisture.
Contour barriers: Stones, grass, soil are used to build
barriers along contours. Trenches are made in front of
the barriers to collect water.
Rock dam: Rocks are piled up to slow down the flow of
water. This prevents gullies and further soil loss.
Terrace farming: Broad flat steps or terraces are
made on the steep slopes so that flat surfaces are
available to grow crops. They reduce surface runoff and soil erosion.
Intercropping: Different crops are grown in alternate
rows and are sown at different times to protect the
soil from rain wash.
Contour ploughing: Ploughing parallel to the
contours of a hill slope to form a natural barrier
for water to flow down the slope.
Shelter belts: In the coastal and dry regions, rows
of trees are planted to check the wind movement to
protect soil cover. .
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