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Volume 34, Issue 1 (2019)
GeoRes 2019, 34(1): 87-95 |
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Received: 2017/11/17 | Accepted: 2019/02/4 | Published: 2019/03/17
Received: 2017/11/17 | Accepted: 2019/02/4 | Published: 2019/03/17
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Maleki A, Fathnia A A, Akbari M. Geomorphic and land cover assessment of dust sources affecting the west and North-West Iran. GeoRes 2019; 34 (1) :87-95
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URL: http://georesearch.ir/article-1-268-en.html
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1- Department of Geography, University of razi, kermanshah, Iran , amjad_maleki@yahoo.com
2- Department of Geography, University of razi, kermanshah, Iran
2- Department of Geography, University of razi, kermanshah, Iran
Abstract (8357 Views)
Background and Amis: The most important environmental challenges facing the West of iran in recent years is the dust phenomenon, that today has become one of the most important problems in arid and semi-arid areas. This phenomenon occurs as a climatic phenomenon in all climatic conditions, that causes adverse social, economic, environmental and commercial impacts. In this research have used dust sources that have been identified by Jalali and Davoodi (2008) for study effects of surface features on the creation of dust sources on the west of the country. The study area is about 1200,000 square kilometers that located in the east of middle east includes Iraq and parts of Iran, Turkey, Syria, Jordan, Saudi Arabia and Kuwait. The aim of this research is to evaluate geomorphic characteristics and surface sediments, land cover, and wind erosion potential of dust sources in the study area.
Methodology: For this purpose, on based on the Bullard (2011) classification, first, layers of geomorphic , soil and land cover class were prepared and classified to three groups low, medium and high, according to the relative importance of the classes in the release of dusts. Subsequently, using 40 data stations, wind erosion potential (EW) was calculated and zoned by Kriging method.
Conclusion: The results showed that geomorphic characteristics have the greatest role in the distribution of emission control factors. Sand dunes in the geomorphic classes with a dust Emission Ratio of 35.3 unit have the greatest effect on the creation of dust sources. There is not much conformity between different classes of land cover and type of soil with dust sources, but there is compatibility between the wind erosion potential with dust sources and the most dust sources created in areas with high wind erosion potential.
Methodology: For this purpose, on based on the Bullard (2011) classification, first, layers of geomorphic , soil and land cover class were prepared and classified to three groups low, medium and high, according to the relative importance of the classes in the release of dusts. Subsequently, using 40 data stations, wind erosion potential (EW) was calculated and zoned by Kriging method.
Conclusion: The results showed that geomorphic characteristics have the greatest role in the distribution of emission control factors. Sand dunes in the geomorphic classes with a dust Emission Ratio of 35.3 unit have the greatest effect on the creation of dust sources. There is not much conformity between different classes of land cover and type of soil with dust sources, but there is compatibility between the wind erosion potential with dust sources and the most dust sources created in areas with high wind erosion potential.
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