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In order to quantitatively assess desertification in Aghqalla and Gomishan plain and to present a regional
model, a study was carried out in an area of 1720 Sq. Kms. In this study, after reviewing the existing methods, information collection and determining the study units (based on geomorphological facies) a model was
suggested and evaluated. In this model three aspects of desertification namely current status, potential and total hazard were quantitatively studied. The study units were then mapped into 5 classes. In current status,
desertification processes including waterlogging, salinization, degradation of plant resources as well as soil erosion were taken into consideration, and in potential hazard, desertification factors including climate and
geomorphology (natural factors) and excessive exploitation together with improper structures (anthropogenic factors) were studied. Finally, through a combination of these two aspects, total hazard was determined.