Quantitative comparison of biodiversity indices and environmental variables affecting it in beech and hornbeam forests (Case study: Gorazbon district of Kheyroud forest)

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BAYAT M.; Masteali Haidari; Shekarchian A.

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Journal: Journal of Wood and Forest Science and Technology Year:2019 | Volume:26 | Issue:4 Page(s): 47-64

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Title

Quantitative comparison of biodiversity indices and environmental variables affecting it in beech and hornbeam forests (Case study: Gorazbon district of Kheyroud forest)

Author(s)

BAYAT M. | Masteali Haidari | Shekarchian A. | Issue Writer Certificate

Keywords

BeechQ2

BiodiversityQ2

HornbeamQ1

ProtectionQ1

Shannon-WeinerQ1

SimpsonQ1

Abstract

Background and Objectives: Beech and Hornbeam are important species In Hyrcanian forests. Due to the economic and ecological importance of these species it is of importance for forest managers to have sufficient information about the structure and the tree diversity level of Beech and Hornbeam stands and their associated species which will be used to manage and protect these forests. Also in this study, for the first time in the study area, correlation analysis and regression analysis between Biodiversity indices and independent environmental variables were performed which are essential steps in forest planning and management. Materials and Methods: For this purpose, the indices of Biodiversity (Shannon-Weiner and Simpson Index) were measured separately in each sample plot and then were compared with each other. In addition, the correlation and regression of these indices with 16 eco-physiographic factors including seasonal light, mean air temperature, high altitude from the nearest drained point, topographic shafts, relative humidity, wind speed, reflection and radiation levels representing the environmental conditions of the region were obtained. Among them, only four factors had a significant correlation with Biodiversity indices. These factors are air temperature near the earth surface, topographic wetness index, wind speed, and total solar radiation energy in each habitat. Also t-test was performed to investigate the significant differences between Biodiversity indices of the two habitats. Results: The results showed that both Biodiversity indices were higher in Hornbeam habitat than Beech habitat. The correlation coefficient of the mentioned environmental variables with the Shannon diversity index in each habitat indicated that the correlation coefficients of the variables with the Biodiversity index in the Hornbeam habitat were higher than the Beech except for the correlation coefficient related to the total solar energy variation in the Beech habitat which was higher, with a negative slope indicating the shade-demanding nature of Beech species compared to Hornbeam. Also t-test showed that there is a significant difference between the two habitats in terms of Shannon-Weiner index. Conclusion: Totally Biodiversity indices have high ability in description of forest status. The advantages of these indices are high accuracy, inexpensiveness and flexibility. The results of this study showed that Biodiversity indices were higher in Hornbeam than in Beech, which can be due to various reasons. In fact, determining Biodiversity indices in forest communities firstly and then, examining and determining the environmental factors affecting the Biodiversity of tree species, as well as comparing important forest habitats and communities from the perspective of these factors is of importance for proper management.

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APA: Copy

BAYAT, M., Masteali, Haidari, & Shekarchian, A.. (2019). Quantitative comparison of biodiversity indices and environmental variables affecting it in beech and hornbeam forests (Case study: Gorazbon district of Kheyroud forest). JOURNAL OF WOOD AND FOREST SCIENCE AND TECHNOLOGY, 26(4 ), 47-64. SID. https://sid.ir/paper/368709/en

Vancouver: Copy

BAYAT M., Masteali Haidari, Shekarchian A.. Quantitative comparison of biodiversity indices and environmental variables affecting it in beech and hornbeam forests (Case study: Gorazbon district of Kheyroud forest). JOURNAL OF WOOD AND FOREST SCIENCE AND TECHNOLOGY[Internet]. 2019;26(4 ):47-64. Available from: https://sid.ir/paper/368709/en

IEEE: Copy

M. BAYAT, Haidari Masteali, and A. Shekarchian, “Quantitative comparison of biodiversity indices and environmental variables affecting it in beech and hornbeam forests (Case study: Gorazbon district of Kheyroud forest),” JOURNAL OF WOOD AND FOREST SCIENCE AND TECHNOLOGY, vol. 26, no. 4 , pp. 47–64, 2019, [Online]. Available: https://sid.ir/paper/368709/en

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