EARTH SCIENCE > LAND SURFACE > SOILS > SOIL SALINITY/SOIL SODICITY
The term salinity refers to the presence of the major dissolved
inorganic solutes, essentially Na, Mg, Ca, K, Cl, SO4, HCO3, and CO3, in
aqueous samples. As applied to soils, it refers to the soluble plus
readily dissolvable salts in the soil or, more usually, in an aqueous
extract of a soil sample. Salinity is quantified in terms of the total
concentration (or, occasionally, the content) of such soluble salts.
Soil Science Society of America: Methods of Soil Analysis. 1996.