What are the methods of preventing or reducing soil erosion for Class 9?
Vegetation: It is a ground cover provided by plants, the roots of these plants will captivate the soil and inhibits soil erosion. Matting the soil: The installation of safeguarding covering like a blanket over the soil for the growth of small plants also helps in preventing soil erosion.
- Maintaining a healthy, perennial plant cover.
- Mulching.
- Planting a cover crop – such as winter rye in vegetable gardens. ...
- Placing crushed stone, wood chips, and other similar materials in heavily used areas where vegetation is hard to establish and maintain.
- The various methods for preventing or reducing soil erosion are:
- i. By preventing over grazing.
- ii. By planting more and more trees, as the roots of the trees hold the soil in place.
- iii. By contour ploughing.
- iv. ...
- Explanation:
Soil erosion is the loss of soil cover owing to natural forces such as wind and water.
The correct answer is Shelterbelts. Shelterbelts is the method of soil conservation in the coastal and dry regions. Shelterbelts: In this method rows of trees are planted to check the wind movement to protect soil cover.
Contour farming and terracing: It is the practice of tilling sloped land along lines of consistent elevation in order to conserve rainwater and to reduce soil losses from surface erosion.
Soil erosion is a gradual process that occurs when the impact of water or wind detaches and removes soil particles, causing the soil to deteriorate. Soil deterioration and low water quality due to erosion and surface runoff have become severe problems worldwide.
Prevention of soil erosion can be done by (i) afforestation that is large scale planting in place of cut down forests. (ii) avoiding overgrazing of grasslands. (iii) terrace farming and other better farming methods in hilly areas.
Erosion is the geological process in which earthen materials are worn away and transported by natural forces such as wind or water. 6 - 12+
Soil is formed by the process of weathering. Weathering is a process of physical breakdown and chemical decomposition of rocks and minerals near or at the surface of the earth. This physical and chemical decomposition is primarily done by wind, water, and climate.
What are the causes of soil erosion Class 9?
- Higher intensity of rainfall and flooding causes rill erosion, gully erosion, sheet erosion and splash erosion.
- The agricultural activities disturb the ground. ...
- Overgrazing of animals removes the vegetation from the land which in turn causes erosion.
Crop Rotation: Rotating in high-residue crops — such as corn, hay, and small grain — can reduce erosion as the layer of residue protects topsoil from being carried away by wind and water. Conservation Tillage: Conventional tillage produces a smooth surface that leaves soil vulnerable to erosion.
Roots of plants hold the soil particles and prevent their loss. Hence afforestation i.e. growing plants to form a soil cover prevents soil erosion.
Soil conservation practices are tools the farmer can use to prevent soil degradation and build organic matter. These practices include: crop rotation, reduced tillage, mulching, cover cropping and cross-slope farming.
Contour farming and terracing: It is the practice of tilling sloped land along lines of consistent elevation in order to conserve rainwater and to reduce soil losses from surface erosion.
- Use of pesticides should be minimized.
- Use of fertilizers should be judicious.
- Cropping techniques should be improved to prevent growth of weeds.
- Special pits should be selected for dumping wastes.
- Controlled grazing and forest management.
Soil erosion is a gradual process that occurs when the impact of water or wind detaches and removes soil particles, causing the soil to deteriorate. Soil deterioration and low water quality due to erosion and surface runoff have become severe problems worldwide.
- Following methods are normally adopted for conserving soil:
- Afforestation: ...
- Checking Overgrazing: ...
- Constructing Dams: ...
- Changing Agricultural Practices: ...
- (i) Crop Rotation: ...
- (ii) Strip Cropping: ...
- (iii) Use of Early Maturing Varieties:
- Planting Vegetation.
- Contour Farming.
- Applying Mulches.
- Avoiding Overgrazing.
- Reforestation.
- Use Plastic Sheeting.
- Use of Silt Fencing.
- Applying Terraseeding Method.
Soil erosion affects soil health and productivity by removing the highly fertile topsoil and exposing the remaining soil. It decreases agricultural productivity, degrades ecosystem functions and amplifies hydrogeological risk, such as landslides or floods.
What are 4 methods of controlling soil erosion discussed in class?
Learn about management practices such as no-till, reduced tillage, cover crops, and contour farming to reduce the threats of erosion.