Land and vegetation degradation by soil erosion and salinization in the western australian wheat belt

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In the W.A. Wheat Belt, there are serious soil erosion and salinization in farmlands. Field studies were carried out in 1983 to observe soil erosion, salinization and related environmental changes caused by European settlement and to consider their interrelationships. Soil erosion seems to be related to the spread of soil salinity. Both effects have been caused by the replacement of native vegetation with agriculture. Soil erosion appears to begin with the instability of the surface layer on relatively gentle slopes with high content of cations and phosphorus, which suggests a link between salinization and fertilization by the application of fertilizer to promote growth. The distribution of dead trees standing along small streams indicates that a road embankment over the valley has changed the hydrology and salinity. Such changes have caused retrogressive plant succession. Land and vegetation degradation on the lunette is also significant.
首都大学東京の論文