GK
SOIL EROSION AND CONSERVATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Rich in plant nutrients
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Devoid of plant nutrients
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Unaltered in plant nutrients
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All of these
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Detailed explanation-1: -Updated On: 27-06-2022. When soil erosion occurs the top soil is removed and only the top soil is fertile as it contains organic matter and nutrients and prodcutivity of land is reduced due to devoid of plant nutrients.
Detailed explanation-2: -Soil erosion reduces the agricultural value of lands via physico-chemical degradations. Soil nutrient loss through runoff and sediment, is a major driver for soil fertility decline [1, 2]. The eroded sediments or soil are highly concentrated with crop nutrients, which are washed away from farmlands.
Detailed explanation-3: -Soil erosion decreases soil fertility, which can negatively affect crop yields. It also sends soil-laden water downstream, which can create heavy layers of sediment that prevent streams and rivers from flowing smoothly and can eventually lead to flooding. Once soil erosion occurs, it is more likely to happen again.