Assessment and preparation of the map for the potential and actual condition of desertification by emphasizing on wind erosion using MICD model at the south west of Hirmand township

Document Type : Research Paper

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Abstract

Desert  is a crumbling ecosystem which the capacity of natural plant production  has  reduced or eliminated in it. For the assessment of desertification condition  and preparing the relevant maps,  different models  have been presented which world model  FAO-UNEP can be pointed. In Iran, some  regional models have been presented  for evaluation of desertification condition. In this research, the developed classification method of type and severity of desertification in Iran, MICD , has been used for  the  assessment of  the current and the inherent condition of desertification in south west of  Hirmand city.For this purpose, the present working units in the region were used as the base map for valuing the factors and indices. Then, by valuing the indices and summation of their relevant scores at each working units and based on the base table, desertification was classified and then the maps of the current and inherent condition at each usages in GIS environment was prepared. The results showed that the under study region , from the view point of current condition of desertification is placed at four classes of low, medium, high and very high or severe and from the view point of potential or inherent capability is placed in three classes of low, medium and high one.
 

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History

  • Receive Date: 16 March 2015
  • Accept Date: 16 March 2015

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