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Ecological Issue:Dry Land Salinity - What is it?
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Ecological Issue: Dry Land Salinity Stuart Dowel What is it? There are two kinds of salinity - dryland and irrigation salinity. Both are about water management and maintaining the right balance or equilibrium. In Western Australia, they are affected mostly by dryland salinity, while in Victoria we are mainly affected by dryland salinity too. Dryland salinity occurs when salt stored in the soil profile over thousands of years is brought to the surface or close to the surface by rising groundwater levels. The extent and seriousness of salinity and in an area depends on land use, vegetation, geology, soils, climate, and salt sources. Each of these factors affects the rate of recharge, which therefore influences the rate of discharge. Recharge is the term used when soil pores are full, causing excess water to pass into groundwater. The term discharge refers to water leaving the groundwater system as flow to streams and rivers or...
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