explain how soil pollution and soil erosion could be prevented
Answers
Answer:
Prevention of soil pollution can be done by (i) use of manures instead of synthetic fertilisers. ... (iv) industrial waste should be treated before release in soil. Prevention of soil erosion can be done by (i) afforestation that is large scale planting in place of cut down forests.
Answer:
Prevention of soil pollution:
The persistent build-up of toxic compounds in the soil is defined as soil pollution. To prevent soil pollution, its causes must be controlled.
1. Reduce the use of plastics: Plastics and polythene bags destroy the fertility of soil. Hence, these should be disposed off properly and if possible, their use should be avoided.
2. Industrial pollutants: Some waste products from industries and homes pollute soil. These pollutants should be treated chemically to make them harmless before they are disposed off.
3. Chemical fertilizers and Insecticides: Other pollutants of soil include chemical fertilizers ,pesticides and insecticides. Therefore, excessive use of these substances should be avoided.
Prevention of soil erosion:
Removal of the upper fertile layer of the soil (top soil) by strong wind and flowing water is known as soil erosion. Following steps can be taken to reduce soil erosion:
1. Bunding-Bunding is creating obstruction across the path of surface runoff to reduce the velocity of running water.
2. Overgrazing of animals in woodlands should be stopped..
3. Deforestation: Planting trees.