Which outcome reduces agricultural productivity when irrigation raises water tables?

💡 Explanation

Salinization occurs because the raised water table enhances leaching, carrying dissolved salts upward; subsequent evaporation leaves salt deposits. This evaporative concentration increases soil salinity, therefore reducing productivity, rather than nutrient depletion or clay cementation which involve different mechanisms.

• Which outcome accelerates topsoil development via Antarctic cryoturbation?
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• Which consequence results when soil saturation accelerates deflation?
• Which effect increases when mountain ranges exceed the environmental lapse rate?
• Which effect occurs when trade winds weaken in the Pacific Ocean?
• Which weathering-driven outcome results on basaltic rock in humid Icelandic environments?