‐ Hosseinzadeh, G. Jalilvand, H. and Tamartash, R. 2007. Vegetation covers changes and chemical soil
properties in pastures with different grazing intensities. Iranian journal of range & desert research. Vol.
14(4). 12 pp.
‐ Greenwood, K. A. Macleod, J. Scott, M. and Hutchinson, K. J. 1998. Changes in soil physical properties
after grazing exclusinon. Soil Use and Management. Vol. 14(1). 6 pp.
‐ Jafari Haghighi, M. 2003. Methods of Soil Analysis, Nedaye Zoha press, Tehran, 236 pp.
‐ Johnson, C. M. and Iverson, L. 2001. Nutrient storage primary and secondry horsts in eastern Amazonia.
Forest Ecology and Management. Vol. 231 (3). 7 pp.
‐ Jazirehi, M.H. and Ebrahimi Rostaghi, M. 2003. Silviculture in Zagros, University of Tehran, Tehran,
560 pp.
‐ Karlsson, M. and Nilsson, U. 2005. The effects of scarification and shelterwood treatments on naturally
regenerated seedlings in southern Sweden. Forest Ecology and Management. Vol. 205(2). 11pp.
‐ Lhotka, J. M. and Zaczek, J.J. 2003. Effects of Scarification Disturbance on the Seedling and Midstory
Layer in a Successional Mixed-Oak Forest. Northern journal of applied forestry. Vol. 20(2). 6 pp.
‐ Maranon, T. Ajbilou, R. Ojeda, F. and Arroya, J. 1999. Biodiversity of woody species in oak woodland
of southern Spain and northern Morocco. Forest Ecology and Management. Vol. 115(2). 10 pp.
‐ Moreno G. Obrador J.J. and García A. 2007. Impact of evergreen oaks on soil fertility and crop
production in intercropped dehesas. Agricultur, Ecosystem and Environment. Vol. 119(2). 11 pp.
‐ Marimon, B.S. Felfili, J. Lima, E. Durate, W.M.G. and Marimon- junior, B. 2010. Environmental
determinants for natural regeneration of gallery forest at the Cerrado/Amazonia boundaries in Brazil. Acta
Amazonica. Vol. 40(1). 11 pp.
‐ Mirzaei, J. Akbarinia, M. Hosseini, S. Tabari, M. and Jalali، S.Gh. 2007. Comparison of natural
regenerated woody species in relation to physiographic and soil factors in Zagros forests (Case study:
Arghavan reservoir in north of Ilam province. Pajouhesh & Sazandegi. No: 77. 7pp.
‐ Mohammadi, A. 2009. Study and comparison some of the most important physical, chemical and
mechanical soil properties in the disturbed and undisturbed woodland area in the Zagros region. (Case study:
Woodland Area in Poledokhtar/Southwest of Iran). MSc thesis. University of Guilan. 75 pp.
‐ Namiranian, M. 2006. Measurment of tree and forest biometry. University of Tehran, Tehran, 574 pp.
‐ Pourmajidian, M.R. and Moradi, M. 2003. Investigation on the site and silviculture properties of
Juniperus excelsa in natural forests of Iran in Qazvin province. Iranian journal of forest and poplar research.
Vol. 17(3). 11 pp.
‐ Sanadgol, A. Moghadam, M. and Jafari, M. 2003. Effect of short-term grazing on some soil physical and
chemical characterestics in a Bromus tormentellus pasture. Iranian journal of natural resources. Vol. 55(4).
15 pp.
‐ Shahoei, S. 2006. The nature and properties of soils (translated), 1th Ed. Kordestan University, Sanandaj,
880 pp.
‐ Tabatabai, M. and Ghasriani, F. 1992. Natural resources forests and ranges in Kordestan of Iran. JahadeDaneshgahi
press, Tehran, 846 pp.
‐ Wan Juliana, W.A. Burslem D.F.R.P. and Swaine, M.D. 2009. Nutrient limitation of seedling growth on
contrasting soils from Pashoh forest reserve, Peninsular Malaysia. Journal of Tropical Forest Science. Vol.
21(4). 11 pp.
‐ Zaczek, J. J. 2002. Composition, diversity, and height of tree regeneration, 3 years after soil scarification
in a mixed-oak shelterwood. Forest Ecology and Management. Vol. 163 (3). 11 pp.
‐ Zarinkafsh, M. 2002. Forestry soils, introduction of soil and plants. Research Institute of forests and
rangelands, Tehran, 361 pp.
)