Study of tree regeneration in the grazed and nongrazed areas in the IranoTuranian Ecological Zones

Regeneration and forest durability guarantee is one of the most important aspects of forest sustainability and it should be placed in forest plans priority. To compare regeneration in the two grazed and nongrazed forest, Bagheshady forest located in Khatam city (it has the preservative regions that they are 20 years old), Yazd province, Central of Iran was selected. For this purpose, 60 sample plots (30 plots in the grazed and 30 plots in the nongrazed area) were sampled by a randomizedsystematic method with 100 m2 square plots (10×10 m) in the Net 100×200 meters were sampled. In every sample plot recorded regeneration and health condition. Ttest was used to analysis of mean regeneration differences between grazed and nongrazed area. To analysis data use the SPSS16 software. Results showed the mean of sound seedlings of almond, pistachio and Monpollier maple in the nongrazed region were more than grazed region. These results indicated that nongrazed region more preference than grazed region. Regeneration in nongrazed region was less than grazed region. Ttest indicated significant difference between nongrazed and grazed region for sound and height seedlings. Overall results showed that the grazing have a negative effects on regeneration. To manage of this forest authors suggested that continue preservative plans (nongrazed area) and provide foliage for cattle.