Geographical Distribution and Salinity Level of Soil Resources of Iran

Quantified information on geographical distribution and salinity level of soil resources of Iran ispresented at national and regional scales. From a total of ۶.۸ million hectares of salt-affected agriculturallands, about ۴.۳ million hectares have only salinity limitation without posing any other limitations onsustainable crop production. About ۲.۵ million hectares have other limitations related to soil,topography/erosion, and depth to the ground water table in addition to salinity limitation. The land areasin which the depth to the water table falls within the root zone cover only ۸.۴ percent of total salt-affectedagricultural lands. This makes reclamation of salt-affected lands technically practical and economicallyviable.

کلیدواژه ها:

Salinity level ، Salinity extent ، Land class ، Soil related limitations ، Iran