Identification of dust generation potential in Mighan watershed
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In recent years, soil erosion and dust generation have been one of the major environmental challenges facing Iran. The purpose of this study is to provide a new strategy for identifying dust collection centers in the Arak Mighan Area. In this regard, the amount of erosion in rocky outcrops was investigated using the Fargas erodibility method. The results showed that shale and marl outcrops as well as sediments deposited during the quaternary period have the highest degree of erosion. To identify the potential of dust generation in the area, limiting layers or rock outcrops were considered in eliminating areas with no potential for dust production. Through field observations, the sedimentology map of the region and two maps of land types and land use were drawn and selected as the main layers. In this study, the limiting layers are standardized with the Bolin method and the main layers are fuzzy. The weight of the main layers was determined by the Bureau of land management method. After multiplying each of the main layers in the corresponding weight, the final incorporation of the layers was performed and the potential generation map of the area was produced in five classes. According to the results of this study, the central part of the Mighan wetland and its surroundings have the highest potential for dust generation in the region. Dust sources according to the type of use mostly include Mighan wetland and its surrounding fields and dried ponds, destroyed range, ruined agriculture lands, bare lands and irrigated agriculture lands.
KeywordsFargas erodibility Dust potential Mighan watershed Arak
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
This article does not contain any studies with human participants or animals performed by any of the authors.
Informed consent was obtained from all individual participants included in the study.
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