Compression of Tree Species Indices in the Darabkola Forest, Mazandaran
Subject Areas : environmental managementHadi Bahmany 1 , Iraj Ataei 2 , Aghil Moradmand Jalali 3
1 - M.Sc. Natural Resource, Mazandaran University. (Member of Young Researchers Club).
2 - M.Sc. Mazandaran Islamic Azad University, Faculty of Natural Resource
3 - M.Sc. Mazandaran Islamic Azad University, Faculty of Natural Resource, Gilan Payam-e-Noor Instructor
Keywords: Biodiversity, Diversity indices, richness indices, evenness indices, Darabkola forest,
Abstract :
One of the most important ideas in forest management is maintaining and developing of biodiversity.Biodiversity measuring is one of the most difficult works, time consuming, high cost and in thiscontext; there is not exist comprehensive and standard recipe toward biodiversity measuring. Thisstudy has been accomplished in order to preserve of biodiversity in Darabkola forests (area 280 ha)with measuring tree species diversity in two geographic aspects (northern and southern). In order toinvestigate of tree, eighteen plots (1000 m2), were taken by a systematic random sampling method.Values of species diversity was calculated using Simpson, Shanno - wiener and species richnessMargalef, Menhenich and evenness (Pit and Hill) indices at each plot. Species diversity, speciesrichness and evenness indices Value maximum, at north and southern aspects is related to Shanon-Viner, Margalef and Hill indices, respectively. Results indicated that species diversity indices atnorthern aspect is more than southern aspect, but richness species indices was the same in the bothaspects. For northern and southern aspects Pit and Hill indices were higher respectively. Also resultsindicated that species diversity indices and evenness have significant correlation with together, butthere wasn’t a significant correlation within species diversity indices and evenness. As a result,evenness indices have higher effect to increase biodiversity in comparison with richness.
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