Document Type : Original Article


Assistant Prof. of Natural Resource University of Yazd, Yazd, Iran


In many countries, studies to determine the severity of desertification and providing land plans to implement desertification. One of the models is modified MEDALUS or Iranian model (IMDPA), has been used in present research in order to investigate desertification situation in the Tashk region of Fars province. In this research, the modified IMDPA model used with emphasis on the water, soil and agricultural indexes, and indicators for each criterion has been considered in different value. The qualitative values of desertification indexes placed in four classes as, low, moderate sever and very sever. Among evaluated indexes, Irrigation system and drop level of groundwater have the most effects on desertification with numerical values 4 and 3.7 respectively. In the other indexes, crop yield and SAR of water have the lowest effects on regional desertification with numerical value 1 and 1.5 reactively. Analysis of result showed that the intensity of desertification obtained 2.54 on the entire of region based on 3 indexes and in the base of modified IMDPA model, the regional desertification intensity came to get medium.


- Ahmadi, H. (2006). Calibration project for criteria and indices of desertification evaluation in Iran, Assistance of soil and rangelands issue, department of forestry, Rang and watershed management, Agricultural ministry (Isfahan Segzi Plain).
-Bayat,Z., kaboli, S.H., Rahimi, M., Nikoo,sh., Kianian., M. and soleiman dehkordi, N. (2013). Evaluation of desertification intensity with using of ״Iranian Model for Desertification Potential Assessment ״ in the Marghzar of Shahrekord,s plain. International journal of Advanced Biological and Biomedical Research (IJABBR). 1(9): 968-980
-Dashti Marvili. M., Dabiri. D. (2013). Study of drought in northern Karun watershed. International journal of Advanced Biological and Biomedical Research (IJABBR). 1(5):487- 492
- Esfandiari, M., Hakimzadeh Ardakani,. M.A. (2010). Evaluation of active desertification with emphasis on the soil degradation by IMDPA model . Iranian journal of Range and Desert Reseach, Vol. 17 No. (4), 2011(In persian)
-Jafari a. M., Zare Chahoukib. M.A., Ahmadi. H., Abbasid.H. R. (2011).. Evaluation of the effects of soil properties on desertification (Case study: Segzi Pediment of Isfahan, Iran). DESERT 16 (2011) 1-4
-Lavado Conntador, J.F., S, Schnabel, Mezo Gutierrez, A.G., Pulido, F. M. (2008) Mapping
Sensitivity to land degradation Extremadura. SW Spain. Vol 1, Issue 1, pp 25-41.
- Ladisa G, Todorovic M, Trisorio_liuzzi G, 2002. Characterization of Area Sensitive to Desertification in Southern Italy, Proc.Of the 2nd Int.Conf. On New Trend in Water and Environmental Engineering for Safety and Life:Eco-compatible solutions for Aquatic Environmental, Capri, Italy.
-Rohina. A., Baharani fard. A., Kazemi. N., Abadi. K., Mohammadi.A. (2013). Evaluating empirical methods of flood flow rate estimation in Bakhtegan watershed-Iran. International journal of Advanced Biological and Biomedical Research (IJABBR). 1(4):450-458.
-Sakcali, M. S. (2008). Eco physiology of Capparis spinosa L. a plant suitable for combating Desertification. Pak. J. of Botany. 40 (4): 1481- 1486
-Safari Shad. M., Dashti Marviliand. M., Allahbakhshian Farsani. P. (2013). Zoning droughts by standardized precipitation index in Esfahan province (IRAN). International journal of Advanced Biological and Biomedical Research (IJABBR). 1(5):477-481.
-Semsarian. S., Eskandari Nasab. M.P., Zarehdaran. S., Dehghani. A.M. (2013). Prediction of the weight and number of eggs in Mazandaran native fowl using artificial neural network. International journal of Advanced Biological and Biomedical Research (IJABBR). 1(5):532- 537.
-Shakeriana, N, Zehtabianb, Gh. R,. Azarnivand, H,. Khosravid, H.( 2011). Evaluation of desertification intensity based on soil and water criteria in Jarghooyeh region DESERT 16 (2011) 23-32
-Tavares, J. (2012). Assessment and mapping of desertification sensitivity in an insular sahelian mountain region case study of the Ribeira SecaWatershed, Cape Verde. Geophysical Research Abstracts Vol. 14.
-Toranjzar, H., Poormoradi, M.(2012). Desertification Evaluation Using IMDPA Model (Case Study: Taraz Nahid, Saveh, Iran). Journal of Rangeland Science, Vol. 3, No. 1
-Zehtabian, GR., Ahmadi, H., Azadnia, F. (2008). Investigation of soils and water indices and factors on desertification of Ain-e- Khosh’s Dehloran, Journal of Pajouhesh & Sazandegi, 81: 162-169. (In persian)
-Zhu, Z., Yang, C., Cao, M., Liu. K., Yang, L. (2007). Analysis on the soil factor and Physiological response of the plants in the process of sandy desertification on grassland. Acta Ecologica Sinica. 27(1): 48−57.
-Mashayekhan,A., Honardoust, F.(2011). Multi-Criteria Evaluation Model for Desertification Hazard Zonation mapping Using GIS (Study Area: Trouti Watershed, Golestan, Iran). Journal of Rangeland Science, Vol. 1, No. 4
-Mazloom. H., Foladmand. H. (2013). Evaluation and determination of the coefficients of infiltration models in Marvdasht region, Fars province. International journal of Advanced Biological and Biomedical Research (IJABBR). 1(8):822-829.