Title: Evaluation of Forest Structural Diversity in the low canopy coverage forest stands using strutural Indexes (case study: Persian Juniper stands (Juniperus excelsa Beib) in the Kandiragh region)

Firouzi, Yousef and Sefidi, Kiomars and Sharari, Mearaj and Keivan Behjou, Farshad and Rostamikia, Younes (2018) Title: Evaluation of Forest Structural Diversity in the low canopy coverage forest stands using strutural Indexes (case study: Persian Juniper stands (Juniperus excelsa Beib) in the Kandiragh region). Masters thesis, University of Mohaghegh Ardabili.

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Text (ارزیابی تنوع ساختاری توده¬های جنگلی با تراکم پوشش تاجی کم با استفاده از شاخص¬های ساختاری (مطالعه موردی: جنگل¬های ارس منطقه کندرق خلخال)) Yousef Firouzi.pdf Download (570kB) | Preview

Abstract

Considering the importance of preserving and developing of juniper forests in the mountainous areas and in order to assess the appropriate methods for quantifying the structural characteristics of these forests, the present study was done to evaluate the application of distance methods in determining the structure of canopy coverage forests in forest the Kandaragh forest. For this purpose, three one-hectare study area identified and the entire of forest inventoried using full calipering method, then in each of them 25×25 m gird established and structural characteristics of trees were investigated using distance and the nearest neighbor’s methods. The indicators used in this study included mingling index, distance to nearest neighbors, Clarke and Evans, and uniform angle and dimensional differences. According to the results mean value of Clarke and Evans and uniform angle indices was 1.05 and 0.45, respectively that revealed clumped or random distribution. The mean of mingling index calculated 0.14 among three study area showed low tendency of juniper to mix with other tree species. The mean value of distance to the neighbors was 3.70 m and the height and diameter differentiation were 0.16 and 0.23, respectively. Finally, the results structural diversity index was 0.23 that revealed the low diversity in this forest. According to the findings distance method can be appropriate method for forests with low canopy coverage like Juniper forests. Also, the structural properties of juniper stands must be considered in the management of such forests in order to conservation and restoration.

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