Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2007.1536.1539TabariMasoud JalaliGholam Ali Ali-ArabAli Reza GhanbariMohaddeseh 92007109Soil in the oak forests of northern Iran is compacted by human and livestock whereas this problem is resulted to a defect in natural regeneration of tree species. This investigation aims to determine the suitable rehabilitation of these forests using seed sowing of oak in canopy densities of 25-30% (open canopy), 45-55% (semi-closed canopy) and 65-75% (relatively closed canopy). For this purpose, each canopy density specified within the plots of 1000 m2 was chosen in three replicates to plant oak acorn. The experiment was conducted as completely randomized design. The results in the first growing season indicted that seed germination rate as well as root length was greater in open canopy but no significant difference could be detected in terms of collar diameter, shoot growth, flush number and root/shoot ratio. The investigation reveals that for restoration of the soil-compacted oak stands, open canopies are better suited for seed sowing of oak.]]>Bullard, S., J.D. Hodges, R.L. Johnson and T.J. Straka,1992163440Callaway, R.M.,1992153434441Colpi, C., M. Negretto and L. Ottaviani,1997lFagus sylvatica) seedling tests in a Norway spruce plantation at Mt.]]>185359Ersali, B.,1999Quercus castaneifolia (C.A. Mey.) in Nowshahr forests.]]>1999Gardiner, E.S. and J.D. Hodges,1998Quercus pagoda Raf.) seedlings as influenced by light availability.]]>108127134Henriksen, H.A.,1988pp: 664pp: 664Holmes, T.H.,1995Quercus lobata (Fagaceae).]]>8214321442Joyce, P.M.,1998pp: 4-144pp: 4-144Kozlowski, T.T.,194919207231Kussner, R. and A. Wickel,1998Fagus sylvatica L.) unter Fichte (Picea abies (L.) Karst.) im osterzgebirge.]]>69191198Li, Q. and K. Ma,2003Quercus liaotungensis Koidz. under mature mixed oak overstory and in shrubland.]]>176133146Lupke, B.V.,19981061926Magnus, L., T.A. Thomson and P. Madsen,2004L. fagus sylvatica, L. quercus robur, L. prunus avium and Crataegus monogyna Jacq) for afforestation of farmland.]]>188113123Mohadjer, N.,1998Q. castaneifolia for supplemental of natural regeneration in loveh forest.]]>1998Rasouli, M.,1995pp: 8pp: 8Savill, P.S.,1991pp: 143pp: 143Tabari, M., K. Espahbodi and S.S. Sabbagh,2002Q. castaneifolia C.A. Mey.) seedling to light and taproot pruning.]]>2002Thirgood, J.V.,19711971pp: 118Twedt, D.J. and R. Randy Wilson,2002162287298Vera, F.W.M.,2000Willoughby, I., G. Kerr, R. Jinks and P. Gosling,19961996