Suggest and explain any three ways to control soil erosion
Answers
Plant Grass and Shrubs
slopeGrass and shrubs are very effective at stopping soil erosion. This is primarily because plant roots tend to hold soil together, making it harder to erode. The leaves of the plants also help to reduce the velocity of raindrops falling on the ground, making it harder for them to dislodge the soil and erode it. Ornamental grass and low, spreading shrubs work best as they leave no areas of bare soil exposed to the elements.
Use Erosion Control Blankets to Add Vegetation to Slopes
There are many varieties of fiber, biodegradable, and compost blankets/mats on the market today, and they have all been designed with one aim; to minimize the effects of water erosion on slopes and embankments. Rolled mats are usually made from mulch that is held together by a fiber mesh. They degrade slowly, allowing vegetation that may have been grown in the area to grow and take over the job of protecting the soil from erosion when the mats have finally degraded completely. Compost erosion control blankets act similarly to mulch products but provide organic nutrients that promote vegetation growth, even in areas where germination, moisture management and irrigation could be challenging.
Build Terraces
Cascadia Wall Rexford Place ProjectIf you are planning on trying to control the erosion on very steep slopes or embankments, sometimes planting vegetation may just not cut it as the slope may be too steep to support anything other than the hardiest grass due to the rapid rate of erosion. If this is the case, you should consider building terraces to help slow down erosion as the vegetation takes hold. Terraces can be made out of anything, from wood to concrete blocks to bio-mechanical solutions like the Cascadia Green Wall that uses Filter Soxx with natural mulch/seed filling and geogrid for structural stability. The beds that are created by the terraces can then be used to plant vegetation such as ornamental plants or grass.
Explanation:
Answer:
The three ways by which we can control soil erosion are -
1. Planning of trees in large numbers on deforested land or planting of trees in large numbers in area where there was no forest previously. Grasses and herbs can be used to cover large patches of loose soil .Overgrazing by animals should be avoided. Animals should be moved to a different area for grazing after some time.
2. Terrace farming should be adopted in hilly areas.In this method , suitable crops are grown on a slope , which is cut into large steps called terraces. This reduces the speed with which water flows down , thereby reducing soil erosion.
3.Floods can be controlled to a large extent by building dams . Embankment or mud walls should be constructed around hills slopes or fields to stop the flow of water.