تحقيق روي احياي حفره هاي تجديد حيات نشده رانش FAGUS ORIENTALIS LIPSKY( )

Investigation on restoration of non-regenerated canopy gaps of beech (Fagus orientalis Lipsky)

Investigation on restoration of non-regenerated canopy gaps of a beech (Fagus orientalis Lipsky) stand in Sangdeh forests (north of Iran) was carried out by planting beech nursery seedlings and beech forest (wilding) seedlings in three gaps of 50, 200, 600 m^2 of each seedling treatment at one-year and two-year periods decrease as gap size increases. In 600 m2 gap and even in open place it does never decline from 54% at the end of the 2nd growing season. One-year height growth of both treatments, as well as two-year height growth of wildings, is smallest in open, and two-year height growth of nursery seedlings is greatest in 600 m^2 gap. Generally, from this research it is deduced that in the investigated site, restoration of non-regenerated canopy gaps of the beech stand is practicable with plantation of beech wilding seedlings, Just as beech nursery seedlings, in gaps smaller and probably bigger than 600 m^2.