list any 3 consequences of soil erosion
Answers
Answer: deforestation
Pollution
And loss of water because there will be reduction of trees
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Explanation:
Answer:
Explanation:
1)Fertility loss and land degradation:
The direct and primary effect of soil erosion is soil loss and nutrient leaching resulting in reduction of land productivity. In Nepal, a soil loss of 20 tons/ha/year removes 300 kg of organic matter. 15 kg of Nitrogen, 20 kg of phosphorus and 40 kg of potassium.
2)Floods, landslides, and natural hazard:
There is an increasing trend of annual floods, causing damages of crops, property and lives in Nepal. Eventually, as the vicious circle of erosion proceeds, less water percolates into the soil to feed underground water supplies. Springs, marshes and streams dry up more quickly and, like this leads no further erosion. Large sum of money is spent every year on hills to keep the roads open in Nepal.
3)Pollution:
Sediment, as a pollutant has a two-fold effect on environment .it depletes the land resource form which it is entrained and deposited .it may also acts as scavenger, serving other pollutant, such as agriculture fertilizers and pesticides, from solution and depositing them in stream channels or reservoirs. Sediments is the greatest water pollutant by volume .it kills game fish by clogging their gills, and it covers their spawning beds. It interfere with water purification and sewage treatments. Sediment is one of the significant transport mechanism, for most of the nutrients and specially the N and P that gets into water. These added nutrients may increase aquatic productivity resulting in eutrophication. It may also carry pesticides, pathogenic bacteria from plant and animal wastes.J