In arid and semi-arid regions of Iran, concurrent and comparative studies of water and wind erosion have been rarely performed. Therefore, comparative study and survey of these erosions by using MPSIAC and
IRIFR.E.A models were the main goal of this research.
In this research, some difficulties with evaluation of effective factors in wind and water erosion in MPSIAC
and IRIFR.E.A. models have been defined which should be modified based on climatic and edaphic conditions of Iran.
In this research, the maps of land erodibility to water and wind erosion by MPSIAC and IRIFR.E.A. models were designed and the sedimentation potentials of both erosions have been compared.
The results show that Lalehzar basin with 41 percent of total area, has 49 percent and Negar basin with 59 percent of total area, has 51 percent of sedimentation caused by water erosion.
Wind erosion sedimentations in the mentioned basins are 14.5 and 85.5 percent respectively. In Lalehzar basin the total sedimentation potentials by water and wind erosion showed 36.2 percent and 63.8 percent
difference respectively. These figures in Negar basin are 76.4 percent for water erosion and 23.6 percent for
wind erosion.
Therefore, it is clear that wind erosion in some parts of desert regions is more important than water erosion. Although it is better to study both wind and water erosion and estimate the total sedimentation
potential.
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