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Soil Salinity
Part 1 of Paper
....ing and irrigation. Salinity is caused by changes in the
delicate balance between surface water and groundwater systems. A small increase
in the infiltration of water from the topsoil to the groundwater, due to
rainfall or irrigation, can result in a dramatic rise in groundwater pressure
and watertable levels.
The tre.... Part 2 of Paper
....line seeps to lick the salt, which leads to further erosion.
Salinity affects around 560,000 hectares of the Murray-Darling basin's most
productive irrigation lands, mostly in southern New South Wales, and northern
Victoria, and partly in South Australia. This represents more than half the
total irrigation area. In Western Australia, about 250 square kilometres of
agricultural land is going out of production every year because of soil salinity
caused by overclearing of native vegetation.
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| Number of words: 286 - Approximate pages: 2 |
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