:: Volume 17, Number 57 (6-2017) ::
2017, 17(57): 19-30 Back to browse issues page
Compare and estimate Potential erosion (water-wind ) with utilize empirical models With emphasis on geomorphology In arid catchments
enginer alireza habibi *
Abstract:   (389 Views)

The most countries Particularly in countries with climate arid and semi-arid, Soil erosion is a very important problem.Such research mentioned can be conducted empirical models for estimating soil erosion rates.compatible models for estimating water erosion in arid and semi-arid regions in the model is MPSIAC. The model demonstrates Is the potential for water erosionSediment In case of the Most Arid and semi-arid Are located also influenced by wind erosion.Study area is located, which coordinates 31 degrees 15 minutes to 32 degrees 7 minutes north latitude and 48 ° 17 'to 49 ° 20' east longitude. he average annual rainfall of 300 mm and the temperature is 24 degrees.In this study Methods Based on computational analytical method And field-based studies for this mean first The base were analyzed map data from hydrometery stations and sedimentation, meteorology and rain gauge, aerial and satellite images. In the next step the action of Geomorphological separate types then we need Preparing maps variables empirical models of water erosion and wind in GIS and the units in each of Factors has been analyzed influencing soil erosion. Finally, water and wind erosion rates were calculated for each type of geomorphology. After that, Amount of water and wind erosion potential Of each type Geomorphology were determined According empirical models The results showed that Catchment karoon in Types geomorphology Plain Apandaz, erosional plains and Clay plains Have Respectively 27.7, 35.4 and 36.7 Percent Potential sediment Portion. While determination Wind erosion in this basin Using the irifer model Is showed Plain Apandaz With an equal share of 72.7% The maximum amount of The playa with 15.4 percent and have least erosion basin erosional plains with 4.2% . in the dez basin was water Erosion Potential Portionin the cover plain and playa Over of 37% and Plain Apandazh %24.Geomorphological types The playa, Apandazh and covered respectively 47, 34.8 and 18.1% in regarding potential wind erosion are included.In bahmanshir basin water Erosion Potential Plain aPandazh With 48.2% and unit were cover plain and playa Respectively 34.2% , 17.5%. The maximum surface area of wind erosion in the Plain Apandazh equal to %19 and minimum deposit types include %3.3 belong to types covered Plain.

Keywords: Empirical models, Geomorphology types, Potential erosion water - wind, Semi-arid
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Type of Study: Research | Subject: Special
Received: 2013/11/12 | Accepted: 2015/10/3 | Published: 2017/06/8

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Volume 17, Number 57 (6-2017) Back to browse issues page