جوانه زني بذر زنده ماني و رشد اوليه نهال هاي بلند مازو )QUERUS CASTANEIFOLIAC.A.MEY( در تراكم هاي مختلف تاج پوشش جنگل چيستان - شمال ايران

Emergence, survival and early growth of oak (Quercus castaneifolia C. A. Mey) seedlings tinder different canopy densities in Chamestan forest-northern Iran

Effects of canopy densities on emergence, survival and early growth of one year old Quercus casianeifolia seedlings were investigated in northern Iran. For this aim, nine plots (1000 mʹ) was randomly selected in opened (25%-35% cover), semi opened (45%-55% cover) and semi closed (65%-75% cover) canopies of a mixed oak-water elm stand. Two microplots (16 m2) were set up in each fenced macroplots. After planting 40 acorns in 5 cm depth of each microplots, emergence, survival, height and ground surface diameter of oak seedlings were measured. In the end of first growing season, the results showed that: though most seedling emergence occurs in tir but emergence process continue with descending trend till the end of first growing season. Seedling survival rate and height were respectively 71.1% and 15.8 cm and canopy density did not affect them. The highest emergence rate and collar root diameter occurred in open canopies because of higher light intensity in open canopies. It could be improved oak seed planting technique (sowing in 5 cm depth) success.