Comparison of quantitative and qualitative characteristics of woody species regeneration at the different conditions of human interventions in Arasbaran forests

Document Type : Research article

Authors

1 Corresponding author, Assistant Prof., Department of Forestry, Ahar Faculty of Agriculture and Natural Resources, University of Tabriz, Ahar, Iran

2 Associate Prof., Faculty of Agriculture and Natural Resources Technology, University of Mohaghegh Ardabili, Ardabil, Iran

Abstract

    This research was done to quantify the effects of human interventions on the quantitative and qualitative status of natural regeneration of species with emphasize on oak (Quercus macranthera Fisch. & C. A. Mey. ex Hohen.) species in Arasbaran forest region. Data were collected by transect method in 90 circular sample plots with an area of 3.14 square meters. In each sample plot, the frequency of species, seedling height, growth form, vitality, and regeneration origin were recorded. Results showed that there was natural regeneration of 11 species. Dog rose (Rosa canina L.) and medlar (Mespilus germanica L.) had the highest and lowest frequency, respectively. About 53% of total seedlings had decurrent growth form and 54% of oak seedlings had excurrent from. About 63% of total seedlings belongs to high vitality classes and 45% of oak seedlings were in high vitality class. Seventy-six percent and 70% of total seedlings and oak had seed origin, receptively. Correlation analysis showed that with increasing the intensity of human interventions, frequency of high vitality seedlings have decreased significantly, but forked-spilt form and low vital seedlings have significantly increased. Based on the results, the increase of human interventions has led to decrease of total regeneration. Accordingly, to protect the Arasbaran forests and guarantee the survival of the forest, reducing the severity of human interventions such as grazing livestock and harvesting trees should be a priority.

Keywords

References

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Iranian Journal of Forest and Poplar Research
Volume 28, Issue 2 - Serial Number 80
September 2020
Pages 111-123

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