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8 management on the carbon and nitrogen balance of a mixed-grass rangeland. Ecological Applications, 9: Sharif, A.R., Biondini, M.E. and Grtgiel, C.E., Grazing intensity effects on litter decomposition and soil nitrogen mineralization.. J. Range Manage, 47: Shifang, P., Hua, F. and Changgui, W., Changes in soil properties and vegetation following exclosure and grazing in degraded Alxa desert steppe of Inner Mongolia, China. Agriculture, Ecosystems and Environment, 124: Steffens, M., Kölbl, A., Totsche, K.U. and Kögel- Knabner, I., Grazing effects on soil chemical and physical properties in a semiarid steppe of Inner Mongolia (P.R. China). Geoderma, 143: Teague, W.R., Dowhower, S.L., Baker, S.A., Haile, N., DeLaune, P.B. and Conover, D.M., Grazing management impacts on vegetation, soil biota and soil chemical, physical and hydrological properties in tall grass prairie. Agriculture, Ecosystem sand Environment xxx (2011) xxx xxx. -Van pollen, H.W. and Lacey.J.R., Herbage response to grazing systems and stocking intensities. Journal of Range Management, 32 (4): Archer, S.R. and Smeins, F.E., Ecosystem-level processes. In: Heitschmidt, R.K., Stuth, J.W. (Eds.), Grazing Management: An Ecological Perspective. Timber Press, Portland, OR, Guodong H., Xiying, H., Mengli, Z., Mingjun, W., Ben, H.E., Walter, W. and Mingjiu, W., Effect of grazing intensity on carbon and nitrogen in soil and vegetation in a meadow steppe in Inner Mongolia. Agriculture, Ecosystems and Environment, 125: Harmeyer, D.H., Schmiedel, U., Dengler, J. and B sing, B.M., How does grazing intensity affect different vegetation types in arid Succulent Karoo, South Africa? Implications for conservation management. Biological Conservation, 143: Nikbole, N. B. and Ojima, D.S., Changes in plant functional groups, litter quality, and soil carbon and nitrogen mineralization with sheep grazing in an Inner Mongolian grassland. J. Range Manage, 57: Raiesi, F. and Asadi, E., Soil microbial activity and litter turnover in native grazed and ungrazed rangelands in a semiarid ecosystem. Biol. Fertil. Soils, 43: Schuman, G.E., Reeder, J.D., Manley, J.T., Hart, R.H. and Manley, W.A., Impact of grazing

9 Iranian Journal of Range and Desert Reseach, Vol. 21 No. (1), Effects of grazing management projects on vegetation and some soil physico-chemical properties (Case study: Dehsard region of Kerman province) R. Bagheri 1, S.M. Altaha Maki 2 and S. Mohammadi 3 1* - Corresponding Author, Assistant Professor, Department of Natural Resources, Islamic Azad University - Baft Branch bagherireza10@yahoo.com 2- M.Sc Student of Range Management, Department of Natural Resources, Islamic Azad University - Baft Branch 3- Assistant Professor, Department of Ecology, Institute of Science and High Technology and Environmental Sciences, Kerman, Iran Received: 19/9/2011 Accepted: 25/6/2012 Abstract Grazing management projects conducted by natural resources offices have been less evaluated in previous studies. This research was conducted in order to determine the effects of grazing management projects on vegetation and some soil physico-chemical properties in Dehsard region of Kerman province. Soil and vegetation properties were sampled in early autumn in a completely randomized block design with three replications. Soil samples were taken from depths of 0-15 and cm and soil properties including organic matter, total nitrogen, available phosphorus, available potassium, ph, texture, moisture, and electrical conductivity were measured. Fifty-meter length transects were established and species composition and canopy cover percentage were recorded by linear-contact method. Our results showed that grazing management project caused a double increase in the amount of organic matter and nitrogen in soil surface as compared to the adjacent rangelands. Increased shrub and bush species (3.8 and 5%, respectively) is important as the main source of forage. According to these changes over a period of six years in the project area, the effects of grazing management projects can be evaluated as positive. Keywords: grazing management, soil variation, vegetation variation, Dehsard, Kerman