The effect of altitude on quantitative and qualitative characteristics and estimation of Pistacia ‎atlantica fruits in the forest stands in Sardasht, West Azerbaijan province

Document Type : Scientific article

Authors

1 Department of Forestry, Faculty of Agriculture and Natural Resources, Urmia University, Urmia, Iran

2 Assistant Professor, Department of Forestry, Faculty of Natural Resources, Urmia University, Iran

3 Associate Professor, Department of Forestry, Faculty of Natural Resources, Urmia University, Urmia, Iran

4 Department of Forestry, Ahar Faculty of Agriculture and Natural Resources, University of Tabriz

Abstract

The study aimed to investigate the quantitative and qualitative characteristics of Pistachia atlantica stands in altitude classes and to estimate the amount of fruit production in the studied stands. In this study, in three altitude classes of Sardasht forests (less than 1400 m, 1000 -1400 m, and more than 1400 m), the traditional utilization area of six villages was selected and, in the forest, stands of the mentioned villages, 27 transects of unequal length were randomly established. In the transects, characteristics such as species type, tree height, d.b.h, small and large crown diameter, origin, health status, and distance between trees were measured. Also, the amount of fruit of 89 individuals in different diameter classes was measured. The results showed that in the studied stands, Pistachia atlantica accounted for 11.1% of the mixture, and the average d.b.h and the height of trees were the highest in the elevation class less than 1000 m and 1400-1000 m, respectively. The highest seed-originated tress percentage of Pistachia atlantica individuals was observed in the altitude class of 1400-1000 m and the highest percentage of healthy trees was observed in the altitude class of more than 1400 m. The two characteristics of height and average diameter of the crown show a positive correlation with the amount of fruit produced in each individual‎. This study showed that with increasing altitude, the abundance of Pistacia species decreases.

Keywords

References

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Forest Research and Development
Volume 7, Issue 4
February 2022
Pages 653-670

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