تاثير عوامل فيزيوگرافي بر زادآوري طبيعي گونه بلوط بلند مازو (Quercus castaneifolia C. A .Mey) در جنگل هاي بلوط لوه، گرگان

Effect of geographic situation on natural regeneration of oak (Quercus castaneifoila C.A. Mey) in Loveh Forest

Natural regeneration subject is the most important factors for survival and sustainability of natural forest ecosystems. Understanding of regeneration condition establishment of dominant species such as oak (Quercus castaneifolia) would be helpful to find out succession stages stands.for this purpose a study has been done in district No3 of loveh forest management plan. Condition of regeneration investigated in 3 elevation ranges (600, 1100 and 1600 m) in natural and non-disturbed sites. Random systematic method was applied, 27 plots in area of 2500m2 were established, then 5 square microplot in dimension of 5><5m (135 altogether) were considered for measurement of all seedling and sapling updown and above 1/30 meters. Regeneration data was analysis in different elevation aspect and slop. Result showed that regeneration frequency change is not depended to increasing of elevation uniformly. Higher number of regeneration is located in lower and higher elevation but it decreases in middle altitude, the most of number of regeneration observed to southern- west and northern-east and in slop of lower than 10%, for establishment regeneration, optimum crown 75-90% and it was best depth humus and litter 3-4cm. according to the result the least number regeneration usually appear in lower altitude, lower slop and southern geographical. This subject is very helpful to make decision for silviculture systems application and plantation this species.