Current data for the Iranian desert area are derived from the statistics published by the Forests, Rangelands, and Watershed Organization. It should be noted that these statistics have no scientific basis since what has been presented about the area of deserts is merely related to the desert phenomena and facies, discussed in geomorphology. While, the formation of the Iranian natural deserts is under the interaction effects of environmental factors including climate, soil, plants, geology, geomorphology, and hydrology, either directly or indirectly involved in the development of desert conditions. Therefore, separation and determination of the Iranian desert area should be performed with considering all the above-mentioned criteria. The Desert Research Division, RIFR, has determined the territory of the Iranian deserts in a research project with considering all the factors enumerated above and with collaboration of over 65 scholars and experts. According to the obtained results, the total area of the Iranian deserts was calculated to be 907293 square kilometers, covering 55 percent of the whole area of the country.
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