Question

Land degradation in irrigated areas is caused by which of following reason ?
a. Gully erosion
b. Wind erosion
c. Salinization of soil
d. Siltation of land

Answer 1

Answer:

a as it is gully erosion . It is a form of erosion

Answer 2

Answer:

Land degradation in irrigated areas is caused by "Salinization of soil".

Explanation:

The land degradation is caused by "Salinization of soil". Soil salinization occurs when water soluble salts accumulated in the soil. Thus the soil effects on environmental health, agricultural production and economics.  This is the reason in earlier stage the salinity affects the “metabolism of soil organisms” and “reduces soil productivity”. In the advanced stage it "destroys the vegetation" and "other organisms" in the soil. In particularly the irrigated areas are severely affected by this salinization.