Archibold, O. W., 1995. Ecology of world vegetation. Chapman and Hall Inc. London, 509 p.
Bharali, S., Paul, A., Khan, M. L. and Singha, L. B., 2011. Species diversity and community structure of a temperate mixed rhododendron forest along an altitudinal gradient in West Siang District of Arunachal Pradesh, India. Nature and Science, 9(12): 125-140.
De Martone, M., 1942. Geographie universelle, Vol. I, 140.
Dengler, J. Janisova, M. and Rusina, S., 2008. World grasslands and biodiversity patterns, 29: 3-5.
Ebrahimi Kebria, KH., 2002. Investigated the effects of topography and vegetation and diversity grazing on the cover percent changes in the sub basin Sefidab Haraz, M.Sc. thesis, University of Mazandaran, 82 p. (In Persian).
Fakhimi Abarghui, A., Mesdaghi, M., Gholami, P., Naderi Nasrabadi, H., 2011. Effect of some topographic characteristics on the plant diversity (Case Study: Yazd Nadooshan steppe grasslands). Iranian Jour. Range and Desert Research, 18(3): 419-408. (In Persian).
Grytness, J. A. and Vetaas, O. R., 2002. Species richness and altitude: A comparison between along the Himalayana altitudinal gradient, Nepal, the American Naturalist. 159(3): 294-304.
Hammer, Q., Harper, D. A. T. and Ryan, P. D., 2001. PAST: Paleontological Statistical Software Package for Education and Data Analysis, Palaeontologia Electronica, 4(1): 9.
Hosseini, A., 1995. Investigated of plant communities Mirzabylo and Almeh Golestan National Park. Range management master's thesis, Tarbiat Modarres University, 128 p. (In Persian).
Hund, K. C., 2002. The effect of slope aspect on environmental conditions and vegetation, California state science fair.
Keshtkar, H., 2007. Investigated the ability of satellites to map land cover (case study: Ghorkhud protected area in northern Khorasan province). Range management M.Sc. thesis, department of natural resources, Tehran university. 141 p. (In Persian).
Magurran, A. E., 1988. Ecological Diversity and its Measurement. Chapman and Hall, London.
Magurran, A. E., 2003. Measuring Biological Diversity, Wiley-Blackwell, London, 260 p.
Mesdaghi, M., 2003. Vegetation description and analysis. Mashhad University Publications, Mashhad, Iran 287P. (In Persian).
Mesdaghi, M., 2005. Plant ecology, Jahad Daneshgahi of Mashhad press, Mashhad, Iran 187 p. (In Persian).
Mirdavoodi, H. R. and Zahedi Poor, H., 2005. Determination of suitable species diversity model for Meyghan playa plant association and effect of some ecological factors on diversity change. Pajouhesh & Sazandegi, 68: 56-65. (In Persian).
Motomura, I., 1932. On the statistical treatment of communities. Zool. Tokyo, 44: 379-383.
Oliveira, F. F. and Batalha, M. A., 2004. Lognormal abundance distribution of woody species in a cerrado fragment. Revista Brazil. Bot., 28(1): 39-45.
Stiling, P., 2000. Ecology. Theories and Applications. Prentice Hall Inc. 395 p.
Thomas, G., 2000. BIO-DAP: A program for Ecological Diversity and its measurement. Parks Canada and Fundy National Park.
Vandermeer, J. H., 1981. Elementary mathematical ecology. Wiley Publishers, 294 p.