Which of the following statements best describes quot Soil Impoverishment quot ........

World Geography (Easy) World - Soil and Vegetation

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Which of the following statements best describes "Soil Impoverishment"?

It denotes a condition that results from the accumulation of soluble salts in soil.

It is a process that involves the removal of nutrients from the soil.

It refers to the wearing away of a field's top soil by the natural physical forces of water and wind.

It is downward and outward movement of rock and sediments on a sloped surface, mainly due to the force of gravity.

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Explanation:

Soil Impoverishment or Reverse Fertilisation involves the removal of nutrients from the soil. In general the removal of nutrients deprives the plant of essential nutrients for growth. It may lead to growth secession of the plant. However this technique of reverse fertilisation can be used in forestry for growth of certain species over the others.

It is most often done by introducing large amounts of organic matter to the soil. Microbial decomposition of this organic matter temporarily monopolises large amounts of nitrogen, making it unavailable to plants. Plants which can grow nitrate deficient lands will have higher growth rates in this case.
Hence option b is the correct answer.