Groundwater flow paths and implications for dryland salinity in the riverine province, southeastern murray Basin, australia
نویسنده
چکیده
rise of groundwater levels in unconfined aquifers can cause dryland salinity to increase by several processes including; dissolution of windblown halite, and incorporation of saline clay pore water. The primary process of increased groundwater salinity is evaporation of shallow groundwater as it rises to within a few meters of the ground surface. in murray Basin, australia, the effect of dryland salinity on agriculture and natural ecosystems is severe, and threatens approximately 6,000,000 ha (6 to 7%) of arable land. evaporation is the dominant factor in producing the highsalinity groundwater, which means that the region is at risk from expanding salinity as long as the water table remains shallow, regardless of whether salt sources exist in the unsaturated zone.
منابع مشابه
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