Chapter 17 - Salt: an environmental stress

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Secondary salinisation near Ouyen, Victoria, showing a lower slope discharge zone for saline ground-water. Established eucalypts have died, and salt is encroaching up-slope into grazing land. Local hydrologic balance was disturbed by land clearing which increased groundwater accession and led to a subsequent rise in water tables (Photograph courtesy P.E. Kreidemann)

Salinity, like drought, remains one of the world's oldest and most serious environmental problems. Mistakes made by the Sumerians in the Tigris and Euphrates basin of Mesopotamia over 4000 years ago are being repeated today...

(McWilliam 1986)