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Title

PLANT BIODIVERSITY IN RELATION TO PHYSIOGRAPHICAL FACTORS IN AFRATAKHTEH YEW (TAXUS BACCATA L.) HABITAT, NE IRAN

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 Start Page 1 | End Page 12

Abstract

 The concept of PLANT BIODIVERSITY is closely related to flora composition and is one of the important characteristics of plant communities which is always used as an index for ecological assessment of forest ecosystems. In this research, PLANT BIODIVERSITY in AFRATAKHTEH Yew (Taxus baccata L.) habitat was studied by 30 sample plots (400 m2 area) with 3 times repetitions in land form units, 3 plots were taken by selective procedure in representative stand of each land forms. At each plot, PLANT BIODIVERSITY indices such as: richness, evenness and diversity with respect to physiographical factors were investigated. One way ANOVA, Duncan's multiple comparison tests and t-test were used to study differences among physiographical classes. The results indicated there was no significant difference between altitude and species diversity. Duncan's results showed that the average measure of richness, Diversity indexes of Shannon and Mc-Arthur and Pielou Evenness were highest towards the west. Also, the average measure of richness, the Diversity indexes of Shannon and Mc-Arthur were highest in 10 to 35% slope.

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