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INVESTIGATING SILVICULTURAL CHARACTERISTICS OF YEW （TAXUS BACCATA L.） STAND USING full-callipering IN NORTHERN FORESTS OF IRAN

引用

International Journal of Biomathematics 2013年第1期6卷 105-114页

作者： MIR MOZAFFAR FALLAHCHAI SEYED ARMIN HASHEMI GASEM RAHANJAM Department of Forestry Lahijan Branch Islamic Azad University Lahijan Iran MS. c Forestry Department of Forestry Lahijan Branch Islamic Azad University Lahijan Iran

In this research, some of site and silvicultural characteristics of Yew stand in northern forests of Iran was studied. For this purpose, compartment number 16 of district 4 Shir-ghalaye was selected. According to research purposes, stands with an area of 20 ha were chosen in center of the compartment and was separated from map. Due to restricted area of region and according to few number of Yew trees in the stand, the full-callipering method was conducted for measuring quantitative and qualitative characteristics. In the stand diameter at breast height （D.B.H.）, height and canopy diameter of all Yew trees were measured. The results showed that the diameter distribution curve and height distribution curve of Yew trees were similar to even-age forests curve. But according to average annual increment, mixture type of Yew trees in stand, diameter distribution of other species and low rate regeneration of Yew, it can be concluded that the studied Yew stand, is an uneven-age stand and because of low rate regeneration in previous years the number of young Yew trees were reduced and even-age forest curve was formed subsequently. The maximum height and diameter of Yew trees were recorded 26.8 m and 112 cm, respectively. Also, the number of trees per hectare and basal area per hectare of Yew trees were calculated 14.55 and 3.23 m2 respectively.

关键词： Silviculture full-callipering Yew.

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