[1] Abdolahi, J., Arzani, H., Savabeghi, M.H., Azimi, M.S. and Naderi, H. (2012) .The effect of precipitation fluctuations on canopy cover and range forage production in Yazd semi-steppe rangelands (Khud area 1378-1386). Iranian journal of Range and Desert Reseach, Vol. 19 No. (1).
[2] Akbarzadeh, M., Moghadam, M.R., Jalili, A., Jafari, M and Arzani, H. (2007) .Effect of precipitation on cover and production of rangeland plants in Polour.Journal of the Iranian Natural Reseach. Vol. 60. No1.2007.pp. 307-322.
[3] Arzani, H. (1997). The guidelines to evaluate the different climatic zones of rangeland. Research Institute of Forest and Ranglands.
[4] Arzani, H. and Shahriary, E. (2007). Monitoring for Conservation and Ecology. University of Tehran press.
[5] Bates, J. D., Svejcar, T., Miller, R. F., and Angell, R. A. (2006). The effects of precipitation timing on sagebrush steppe vegetation. Journal of Arid Environments,64, 670-697.
[6] Bratton, C. D. (1989). Measurment for Terrestrial Vegetation. John Wiley & Sons, NewYork.
[7] Comstock, J. P., and Ehleringer, J. R. (1992).Plant adaptation in the Great basin and Colorado Plateau. Great Basin Naturalist,52, 195-215.
[8] Ehsani, A., Arzani, H., Farahpour, M., Ahmadi, H., Jafari, M., Jalili, A., Mirdavoudi, H.R., Abasi, H.R and Azimi, M.S. (2007). The effect of climatic conditions on range forage production in steppe ranglands, Akhtarabad of Saveh. Iranian journal of Range and Desert Reseach, Vol. 14 No. (2).
[9] Khumalo, G.F. and Holechek, J., (2005). Relationship between Chihuahuan desert perennial grass production and precipitation. Raneland and Ecology management, 58(33). 239-246.
[10] Koc, A., (2001), Autumn and spring drought periods affect vegetation on high elevation rangelands of Turkey, Journal of Range Management, 54(5).
[11] Laidiaw, A.S. (2005). The effect of extremes in soil moisture content on perennial ryegrass grow Th. International Grassland congress, IRELAND UNITED KINGDOM.
[12] Moghadam, M.R., (2000). Range and Range management. University of Tehran press.
[13] Munkhtsetseg, E., Kimura, R. Wang, J. and Shinoda, M., (2007). Pasture yield response to precipitation and high temperature in Mongolia. Journal of Arid environment, 70:94-110.
[14] Paruelo, J. M., and Lauenroth, W. K. (1996). Relative abundance of plant functional.
[15] Sadeghinia, M., Arzani, H. and Baghestani, N. (2003) .Comparation of different yield stimation methods for some important shrub plants (The case study in Yazd and Isfahan provinces). journal of Pajouhesh & Sazandegi. No: 61 pp: 28-32.
[16] Sharfi, J. and Akbarzadeh, M. (2013). Investigation of vegetation changes under precipitation in semi-steppic rangelands of Ardebil province (Case study: Arshagh Rangeland Research Site). Journal of Natural Environment, Iranian Journal of Natural Resources, Vol. 65, No. 4, 2013, pp. 507-516.