Conference Proceedings

A top-down approach to understand the effect of vegetation changes on stream salinity

NM Malana, J Costelloe, HM Malano, F Chan (ed.), D Marinova (ed.), RS Anderssen (ed.)

19TH INTERNATIONAL CONGRESS ON MODELLING AND SIMULATION (MODSIM2011) | MODELLING & SIMULATION SOC AUSTRALIA & NEW ZEALAND INC | Published : 2011

Abstract

Large scale clearing of native forests for agriculture modifies the patterns of rainfall partitioning into evapotranspiration, runoff and infiltration. As deep rooted trees have higher evapotranspiration rates compared with shallow rooted crops for a given amount of rainfall, removal of native trees results in an increased recharge. This can mobilize salts stored in the unsaturated zone and groundwater. The discharge of salts from catchments causes the salinisation of water and land resources in sub-humid to semi-arid regions. In addition to causing significant loss to economy, the salinity issue is a serious threat to the environmental sustainability. Stream salinity being a function of cli..

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University of Melbourne Researchers