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प्रश्न
What is meant by the terms ‘soil erosion’ and ‘soil conservation’?
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उत्तर
Soil erosion refers to washing away or removal of the layer of soil by various agents like running water and wind.
Sheet erosion and gully erosion are the two most common ways by which soil gets eroded. When there is heavy rainfall, the top layer of soil over large areas gets washed away. This is known as sheet erosion. When rainwater in region flows down the slopes making deep and narrow furrows, it is called gully erosion. Soil erosion also refers to the loss of fertility of soil, which makes the soil infertile and exhausted.
Cutting down the trees and forests, overgrazing by animals, floods, and improper farming practices are some of the main causes of soil erosion.
Soil conservation is the protecting of soil against erosion and exhaustion by planting trees, shrubs and grass on hill slopes.
Soil can be conserved by controlling grazing of cattle and use of proper farming methods such as the levelling of fields, terracing of hill slopes, construction of mud walls or bunds and ploughing fields in circles.
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संबंधित प्रश्न
Give geographical reason:
Soil is a very important resource.
Name any four agents of erosion.
The photograph shows a framing method that helps in controlling soil erosion.
- What is this farming method called
- Mention any two other methods that help in controlling soil erosion.
Read the following statements with reference to soil.
- Weathering is a very fast process of soil formation.
- Percolation of water is faster in sandy soils.
- Loamy soil contains only sand and clay.
- Top soil contains the maximum amount of humus.
Choose the correct statements from the above.
Unscramble the following jumbled word related to soil.
\[\boxed{\text{I}}\]\[\boxed{\text{L}}\]\[\boxed{\text{O}}\]\[\boxed{\text{S}}\] \[\boxed{\text{F}}\]\[\boxed{\text{I}}\]\[\boxed{\text{P}}\]\[\boxed{\text{R}}\]\[\boxed{\text{O}}\]\[\boxed{\text{L}}\]\[\boxed{\text{E}}\]
Unscramble the following jumbled word related to soil.
\[\boxed{\text{A}}\]\[\boxed{\text{T}}\]\[\boxed{\text{O}}\]\[\boxed{\text{N}}\]\[\boxed{\text{I}}\]\[\boxed{\text{E}}\]\[\boxed{\text{R}}\]\[\boxed{\text{P}}\]\[\boxed{\text{C}}\]\[\boxed{\text{L}}\]
Locate the following zones given as boxed items in figure which shows a diagram of soil profile.
| Topsoil, Subsoil, C-horizon, Bedrock |
Rajasthan is a desert state in India. Once while travelling to Rajasthan by train, Boojho observed several streams and rivulets of rain water during the journey but to his surprise, he did not see streams of water in the desert region even during rains. Help Boojho find a suitable explanation for this.
Match the animals in Column I with their natural place of dwelling (habitat) in Column II.
| Column I | Column II | ||
| (a) | Earthworm | (i) | Sand and beaches |
| (b) | Garden lizard | (ii) | Burrows in soil |
| (c) | Crab | (iii) | Deep, narrow holes in dry soils |
| (d) | Rodents | (iv) | Surface of soil |
| (e) | Scorpion | (v) | The surface of shaded moist soils |
| (f) | Snails and slugs | (vi) | A horizon of moist soils |
Several terms related to soil are hidden in the squares given in figure. Spot them and make a list. Two examples are given for you.
