Environmental Effects of Salinity

Salinity is the presence of salt in the land surfaces, in farming or rock, or dissolved in stool in our rivers or ground body of piss. saltiness naturally occurs in many an(prenominal) separate of Australias Landscape. It has been in the soil since well before farming began. burn uply of the salt is sodium chloride (NaCl), which is dishearten salt, however there ar also vary amounts of other salts present such as: sodium hydrogen carbonate (NaHSO4: baking tonic), sodium sulphate (Na2SO4: soda ash), magnesium sulphate (MgSO4: Epsom salts), and calcium sulphate (CaSO4: gypsum). The origins of these salts can be linked to: oPrehistoric nautical or riverine sediments2 oThe weathering or break downcast of the rocks that coif up local anesthetic soils2 oSalts carried inland from costal areas by fond winds2 Over time, the European style farming method has significantly altered the landscape and upset the natural piss balance.2 In many of these landscapes the wet table is rising. This is due to the presence of more(prenominal) groundwater, ca white plagued by the scanty rainwater seeping down from the surface as a result of the clearing of indigen vegetation. Dryland salinity occurs when infixed vegetation is readable and replaced with crops and pastures that have shallower homes and require little water.

Before clearing, the primal vegetation would use most of the water from rainfall, and therefore but 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 cau sing the water table to rise.1 Ground water ! is saline as it carries dissolved salts from the soil and basics hooey 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, regorge it on our website: BestEssayCheap.com

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