Abstract: Lack of knowledge and awareness of valuable natural resources and uncontrolled exploitation in forests of arid areas, including the forest of Khajeh Kalat, has caused the valuable species of this region (Pistacia vera L) to be endangered. Therefore, it seems that the study of natural safe sites and identification some suitable areas for better establishment of pistachio species can help natural regeneration of pistachio species in Khajeh Kalat forests. Therefore, we assessed some growth characteristics of pistachio seedlings such as canopy cover, seedling height and age, across North and South slope aspect and in the locations of regeneration in the summer of 2019.The results showed on the south aspect, the maximum canopy cover and height of pistachio seedlings were observed around the pistachio canopy and open microsite respectively. While, on northern slope, no significant differences were observed between all studied safe sites for the mentioned characteristics of pistachio seedling. The results of the present study can be used to determine the natural regeneration establishment of pistachio species and to be used to enrich the forest of Khajeh Kalat, in accordance with the Principles of closed to nature.

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