Investigation On Regeneration Of Natural Gaps In The Asalem Forests
2006
Amanzadeh, B., Member of Scientific Board of Agriculture and Natural Resources Research Center of Gilan Province., | Amani, M., Member of Scientific Board of Research Institute of Forests and Rangelands | Amin-Amlashi, M., Member of Scientific Board of Agriculture and Natural Resources Research Center of Gilan Province. | Salehi, M., Member of Scientific Board of Agriculture and Natural Resources Research Center of Gilan Province.
In order to study the regeneration in natural gaps, 15 gaps were selected in Asalem forests.The shape and gap size were recorded and one transect was established along the widest diameter of each gaps.Each transect was divided into plots 1mآ². quantities and qualitative characteristics of saplings of different species were studied in every second plot. Result showed that the least and the most of the size of gaps measured ,they were 89 and 2279 mآ² Respectively. Evaluated gaps from geometry point of view were not followed regular shape ,but they mostly closed to circular and oval shape. So that 54% of gaps belong to this shape.Seedling frequency between the gaps were statistically significant .So that by increasing the gap sizes the number of beach (Fagus orientalis )and hornbeam (Carpinus betulus) sapling reduced but maple (Acer velutinum)saplings were increased . Also sapling qualitative between the gaps were statistically significant.
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