-

In order to know about the structure of natural stand that have considerable ability of auto-regeneration
and auto-regulation, it is needed to access the knowledge about the evolution process of forest
ecosystem before planning for harvesting. This knowledge could be useful to determine a suitable
pattern for the selection of silvicultural method. To obtain the structure condition and evolution
process in this study, ten plots of one hectare area each (with grid or dimension of 100 mxlOO m) were
selected in Gorazbon district (Kheyroud-kenar Forest, Noushahr) and stand characteristics including
number, D.B.H, height per hectare were measured in addition to crown diameter and height in strips
with grid 10 mx 100 m in each plot. The results illustrated that beech species was dominant with
respect to height. Regarding high longevity of beech, discontinuous crown of trees, this stand is old
with two or three storied and it is far from the optimal, showing the beginning of regeneration phase
and passing destruction while overlaping aggradations (increasing stage) and destruction stage.