Environmental Effects of Salinity

Salinity is the presence of salt in the land surfaces, in terra firma or rock, or dissolved in trifle in our rivers or ground body of piss. salinity naturally occurs in many an(prenominal) separate of Australias Landscape. It has been in the soil since well before farming began. unairedly of the salt is atomic number 11 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 sulfate (Na2SO4: soda ash), magnesium sulphate (MgSO4: Epsom salts), and calcium sulphate (CaSO4: gypsum). The origins of these salts can be linked to: oPrehistoric maritime or riverine sediments2 oThe weathering or break shoot 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 body of water supply balance.2 In many of these landscapes the water table is rising. This is due to the presence of more(prenominal) groundwater, ca practice sessiond by the surplus rainwater seeping down from the surface as a result of the clearing of indigen vegetation. Dryland salinity occurs when infixed vegetation is absolved and replaced with crops and pastures that have shallower determines and require little water.

Before clearing, the native vegetation would use most of the water from rainfall, and therefore totally a small amount would demean the groundwater system, however crops and pastures use significantly less water than native plants so more water s eeps into the groundwater causing the water ! table to rise.1 Ground water is saline as it carries dissolved salts from the soil and basics substantial 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, throw up it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay