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The Salinity Crisis

Salinity is literally the salting of the earth. In the natural environment large concentrations of salt have built up
in many areas of the world, through millions of years of rainfall, the deposit of ocean salt carried by the wind and the weathering of rocks. Nature developed ways of preventing this salt from leaching out of the earth; mainly with native vegetation – its deep-rooted systems helped stop the underground water tables rising to the surface. Human interference has extensively upset this balance. Removing natural vegetation for farming is old as human history, so too is the spread of salinity. Today dryland salinity has become a major worldwide problem.

THE SALINITY PROCESS

The salinisation process is closely linked to changes brought about in the hydrologic cycle by modification to the way water is routed through the landscape. Two fundamentally different reactions occur depending whether one is dealing with irrigation salinisation or......

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Approximate Word Count: 314
Approximate Pages: 2 (250 words per double-spaced page)

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