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Assessing the impact of land-use on deep drainage in Mediterranean environment of southern Australia

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DRYLAND SALINITY The clearing of natural perennial vegetation including native grasses, trees and shrubs and replacement by annual crops and pastures may reduce annual transpiration and increase water stored in the soil profile, resulting in increased risk of deep drainage... DEEP DRAINAGE UNDER VARIOUS VEGETATION SYSTEMS Experiments were established in May 2004 to quantify the water balance and potential deep drainage occurring on two key ground flow systems of the Wimmera catchment of Victoria, southern Australia... Native pasture systems were believed to minimise deep drainage this research demonstrates that the ability of native pasture to survive dry conditions, which prevailed during this experiment, was due to physiological dormancy during periods of water stress rather than a deeper rooting system enabling extraction of moisture from deeper in the profile...
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