Soil Salinity       Soil Salinity      Salinity in both the rivers and on the land is one of the main and  close costly   results of overclearing and irrigation. Salinity is caused by changes in the   delicate   embossment between surface water and groundwater systems. A small   physical process   in the infiltration of water from the topsoil to the groundwater, due to     rain or irrigation, can result in a   groovy rise in groundwater pressure   and watertable levels.      The trees of the open forests are  without  prevent replaced by shallow-rooted crops and   pastures which absorb far less water than the   pristine trees. Those trees had been   massive water pumps, sucking up moisture from   lavish underground and putting it   back into the atmosphere through the   drying up from their leaves. With those   pumps gone, excess rainfall accumulates underground and watertables rise to the   surface, bringing   old-fashioned sediments of salt with them, often in heavy   concentration   s.      Once   exposed to the air and sun, the salts become even mor...If you want to get a full essay, order it on our website: BestEssayCheap.com
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