Walnut long-lived trees of Ardabil province

Document Type : Scientific Letters

Authors

1 Assistant Prof., Forests and Rangelands Research Department, Ardabil Agricul tural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Ardabil, Iran.

2 Senior Research Expert, Research institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran.

3 Research Expert, Forests and Rangelands Research Department, Ardabil Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization, AREEO, Ardabil, Iran

Abstract

Walnut (Juglans regia) is native to Iran and is being planted in most provinces of the country. This study was performed to identify and record the walnut long-lived trees in the Ardabil province. By collecting information, using local resources, and visiting different parts of the province, 15 walnut long-lived trees were investigated. According to the results, the average diameter at breast height was 131.6 cm, the total height was 11.55 m, and the crown cover was 133.49 m2. The long-lived trees were generally distributed in an altitude range between 1038-1722 m.a.s.l. All of these trees have been planted in the province's old gardens to exploit its product. Regarding growth characteristics and age of long-live trees, while fully protecting these trees, it is possible to produce and propagate their seedlings by creating genetic reserves.

References

- Spies, T.A., and Franklin, J.F. 1996. The Diversity and Maintained of Old-growth Forest. Oxford University Press, New York, 778 p.
- Spies, T.A. 2004. Ecological concepts and diversity of old-growth forests. Journal of Forestry, 102: 14-20.
- Van Pelt, R. 2007. Identifying mature and old forests in western Washington. Department of Natural Resources, Olympia, W.A., Washington.
Iran Nature
Volume 5, Issue 4 - Serial Number 23
September and October 2020
Pages 59-69

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