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Wheatbelt Salinity

Over clearing means that remaining vegetation is not available to soak up water both rainfall and sub soil. In poorly draining soils water runs off to the lowest point to where waterlogging occurs.

Waterlogging causes salinity. When water stops due to a natural or man made barriers the fresh water evaporates leaving salt residues behind. This residue inhibits the growth of grasses and vegetation, so the site remains bare.

In WA, the flat terrain, poor drainage, varied soil types and geological barriers below the soil surface all exaggerate salinity.
Poor Drainage

Photo: The result of poor drainage, the most common
cause of salinity throughout WA

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