[1]. Bazafshan, J. (2002). Comparative study of some meteorological drought indicators in some climatic samples of Iran. Master Thesis, Faculty of Agriculture, University of Tehran. 2002. (in Farsi).
[2]. Bella, S. Z. and A. Nemath. (2006). Application of GIS tools: drought vulnerability in Somogy county, Hungary.
[3]. Bidagh-Jamali, J., Javanmard, S., and Shir-Mohamadi, R. (2002). Monitoring and zoning of drought situation in Khorasan province using SPI index. Geographical Researches, 17 (4): 4-24 (in Farsi).
[4]. Ensafi-Moghadam, T. and Rafiei-Emam, A. (2009). Climatic Droughts Zoning using Inverse Distance Weighted Method. Iranian Journal of Range and Desert Reseach, 16(2): 274-292. (in Farsi).
[5]. Eslami, A.R. and Mirisoliman, J. (2018). Investigating and identifying areas prone to meteorological drought hazard (Case study: Eight regions of North Khorasan). 3rd National Conference on Soil protection and watershed management, 20, 21 June, 2018. (in Farsi).
[6]. Eslami, A.R. and Shokohi, A.R. (2012). Comparison of efficiency of meteorological drought indicators in quasi-Mediterranean regions (Case study: Mazandaran watersheds). 3rd National Conference on Comprehensive Water Resources Management, 10 and 12 September, 2012. (in Farsi).
[7]. Freddy, N., Harrij van, V. and Luc, V. (2009). Harmonized World Soil Database, Version 1.1 .March 2009.
[8]. Gibbs, W.J., and Maher, J.V. (1967). Rainfall Deciles as Drought Indicators. Bulletin No.48, Bureau of Meteorology, Melbourne. 1967.
[9]. Ghaseminejad, S., Soltani, S. and Soffianian, A. (2014) Drought Risk Assessment in Isfahan Province. Journal of Water and Soil Science. 18 (68): 213-226. (in Farsi).
[10]. Ghasemiyan, D., Taremi-Semiromi, M., Jazgi, J. and Boreghni, M. (2009). Investigating the Relationship between Hydrological and Climate Droughts in North Khorasan Province Using SPI Index. The Second National Seminar on Drought Effects/Management, 15 May, 2009.
[11]. Iraji, F. (2008). Evaluation of natural tourist potentials of protected areas of Isfahan province and location of suitable places for recreation in one of these areas. Master Thesis, Faculty of Natural Resources, Isfahan University of Technology. 2008. (in Farsi).
[12]. Keyantash, J. and Dracup, J.A. (2002). The Quantification of Drought: An Evaluation of Drought Indices. Bulletin of the American Meteorological Society, P. 1167-1180.
[13]. Kamali, B., Houshmand-Kouchi, D., Yang, H. and Abbaspour, K. (2017). Multilevel Drought Hazard Assessment under Climate Change Scenarios in Semi-Arid Regions. A Case Study of the Karkheh River Basin in Iran, Water, 9(241): 1-17.
[14]. Khademipour, G., Saberi-Anari, S.M., Nekoyi-Moghadam, M., Masoudi, A. and Jafari-Baghini, R. (2018). Comprehensive Assessment and Zonation of Drought Risk and Vulnerability in Kerman Province, 3 (2): 113-120.
[15]. Lglesias, A., Luis, G. and Francisco, M. C. (2009). Drought risk management in Mediterranean river basins. Journal of Integrated Environmental Assessment and Management, 5(1): 11-16.
[16]. Maccioni, P., Kossida, M., Brocca, L. and Moramarco, T. (2015). Assessment of the Drought Hazard in the Tiber River Basin in Central Italy and a Comparison of New and Commonly Used Meteorological Indicators, Journal of Hydrologic Engineering, 20(8): 05014029.
[17]. Rajsekhar, D., Singh, V. and Mishra, A. (2015). Integrated drought causality, hazard, and vulnerability assessment for future socioeconomic scenarios: An information theory perspective. Journal of Geophysical Research: Atmospheres homepage, 120(13): 6346-6378.
[18]. Salari, A, Tavakol-sadrabadi., M, Zarei, A.R. and Bahrami, M. (2015). Evaluation of Elimate Indices and the General Trend of Climate Changes (Case study: Shiraz synoptic station). Journal of Irrigation and Water Engineering, 22(6): 138-150. (in Farsi).
[19]. Samangan Research Center. (2009). Identifying the capacities of the nomads and the strategies for developing the livestock and economic products of the nomads of North Khorasan. North Khorasan General Directorate of Nomadic Affairs, Research and Studies Unit, 2009. 127. (in Farsi).
[20]. Shahid, S., and H. Behravan. (2008). Drought risk assessment in the western part of Bangladesh. J. Natur. Hazard Rev., 46(3): 391-413.
[21]. Sui, D. Z. (1999). A fuzzy GIS modeling approach for urban land evaluation. Computer, Journal of Environ and Urban Systems, 16:101-115.
[22]. Wilhelmi, O. V. and Wilhite, D. A. (2002). Assessing vulnerability to agriculture drought: A Nebraska case study. Natur. Hazards, 25: 37-58.
[23]. Wu, J. B. He, M. Liu. and zhao, L. (2011). Quantitative assessment and spatial characteristic analysis of agriculture drought vulnerability in china. Nature. Hazards. 56(3): 785-801.
[24]. Zareh-Abyaneh, H., Bayat-Varkeshi, M. and Yazdani, V. (2011). Trend analysis of annual and seasonal temperature, precipitation and drought in Hamedan province. Journal of Irrigation and Water Engineering. 22 (3): 47-58. (in Farsi).