Dry Land Salinity
Salinity in drylands can occur when the water table is between two to three metres from the surface of the soil. The salts from the groundwater are raised by capillary action to the surface of the soil. This occurs when groundwater is saline (which is true in many areas), and is favored by land use practices allowing more rainwater to enter the aquifer than it could accommodate. For example, the clearing of trees for agriculture is a major reason for dryland salinity in some areas, since deep rooting of trees has been replaced by shallow rooting of annual crops.
Read more about this topic: Soil Salinity
Famous quotes containing the words dry and/or land:
“the dry indifferent glare in my mind’s eye
wavered but burned on.”
—Denise Levertov (b. 1923)
“The first day that we landed upon that fatal shore
The planters they came round us full twenty score or more,
They rank’d us up like horses, and sold us out of hand
Then yok’d us unto ploughs, my boys, to plow Van
Dieman’s Land.”
—Unknown. Van Dieman’s Land (l. 9–12)