The accumulation of soluble salts in soil occurs when evaporation exceeds precipitation and salts are not leached but remain in the upper soil layers in low-lying areas. Natural soil salinization, referred to as “primary salinization,” occurs in arid and semi-arid climatic zones.

Where is soil salinization most likely to occur?

calcium, and magnesium in the soil • a high water table • a high rate of evaporation • low annual rainfall In semiarid areas, salinization often occurs on the rims of depressions and edges of drainageways, at the base of hillslopes, and in flat, low-lying areas surrounding sloughs and shallow bodies of water.

How does soil salinisation occur?

What Causes Soil Salinization? Soil salinization occurs when soluble salts are retained in the earth. It happens either naturally or because of improper anthropogenic activities, particularly farming practices. Besides, some earths are initially saline due to low salt dissolution and removal.