European Journal of Experimental Biology Open Access

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Identification of detachment zone facieses (Case study: Konarak region)

Naser Rashki, Gholam Reza Rahdari and Mohammad Reza Rahdari

More than75percent of Iran is located in arid and semi-arid and wind erosion is one of the most important processes in these region. Vast areas of Iran have been out of ecological balance due to natural factors and human activities that these leading to land degradation and desertification. Wind erosion, sediment transport and dust storm among the first evident results of this destruction. Among these, wind is the main cause of erosion in these areas, detaching sediments from one place and depositing them in another. Identification of detachment zones must be in the first priority. Source identification of the sediments in Konarak region is carried out in this study that used from the method proposing by Ahmadi and Ekhtesasi as well as composes by two stages of finding the orientation and the position of the facieses of detachment zone. With using by this method the facieses were recognized to be agricultural lands with small sand dunes and nebkas, poor rangelands with semi-active nebkas, semi-active sand dunes with small nebkas, active sand dunes and sand sheets, abandoned agricultural lands with semi active sand dunes, and riverbeds and streambeds. Results show that the major causes of sediment detachment in these facieses are the recent year drought, poor vegetation and destruction of vegetation.