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The effect of intensity and duration of drought on wind situation and wind erosion (Case study: Damghan city, Iran)

By: Hassan Khosravi, Mahin Hanifipour, Tayebeh Sohrabi

Key Words: Wind, Precipitation, Evapotranspiration, Temperature, Wind erosion.

J. Bio. Env. Sci. 8(1), 124-132, January 2016.


Wind erosion is a natural disaster that the arid zones in center of Iran are increasingly faced with it. Improper management of natural resources has been many effects on increasing of the phenomenon. Precipitation, temperature and wind are the most important climatic factors that influence the Lack of rainfall, rising temperatures and wind velocity increased evapotranspiration in the region. Therefore, identifying the climatic parameters can be useful for natural resources and agriculture management. Damghan City is prone to wind erosion in the North East of the country. The aim of this paper is to investigate climatic parameters (precipitation, temperature, evapotranspiration and wind) and to determine dry month of area and the effect of it on wind erosion. Based on the results of the average temperature in the month of May to mid-October, the region was dry, so that, June, July, August and September seems to be its greatest extent. The evapotranspiration exceeds rainfall all year, and rainfall is 11 times the amount of evapotranspiration. Occurrence of wind storm and evapotranspiration in May, June and July is more than the other months, also temperature rate is higher than rainfall in these months. The temperature of August and September is more than any other months that drought is severe and rainfall is at its lowest. Therefore, the climatic factors are caused the occurrence of wind erosion in the study area.


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