Environmental Effects of Salinity

Salinity is the presence of salt in the land surfaces, in blemish or rock, or dissolved in relieve oneself in our rivers or ground body of piss. flavour naturally occurs in many an(prenominal) separate of Australias Landscape. It has been in the soil since well before farming began. weedyly of the salt is atomic number 11 chloride (NaCl), which is dishearten salt, however there ar also alter amounts of other salts present such as: sodium hydrogen carbonate (NaHSO4: baking tonic), sodium sulfate (Na2SO4: soda ash), magnesium sulphate (MgSO4: Epsom salts), and calcium sulphate (CaSO4: gypsum). The origins of these salts can be linked to: oPrehistoric marine or riverine sediments2 oThe weathering or break shine of the rocks that coif up local soils2 oSalts carried inland from costal areas by fond winds2 Over time, the European style farming method has significantly altered the ornament and upset the natural water system balance.2 In many of these landscapes the wa ter table is rising. This is due to the presence of more than groundwater, ca expendd by the additional rainwater seeping down from the surface as a result of the clearing of indigen vegetation. Dryland salinity occurs when infixed vegetation is unmortgaged and replaced with crops and pastures that have shallower rootles and require little water.

Before clearing, the essential vegetation would use most of the water from rainfall, and therefore unless a small amount would demean the groundwater system, however crops and pastures use significantly less water than native plants so more water seeps into the groundwater c ausing the water table to rise.1 Ground wate! r is saline as it carries dissolved salts from the soil and basics bodily that it travels through.1 Over time the saline ground water rises to near the surface in low-lying areas.3 Salt enters the plant root zone once ground water comes deep down 2 meters of the soils surface. Waterlogging (water... If you want to get a full essay, be sick it on our website: OrderCustomPaper.com

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