Document Type : Scientific Letters
Authors
1
Senior Research Expert, Research institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran.
2
Associate Prof., Research institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
3
Assistant Prof., Research institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
4
Associate Prof., Department of Forestry and Forest Economics, Faculty of Natural Resources, University of Tehran, Karaj, Iran
Abstract
Walnut (Juglans regia) is native to Iran and is being planted in most provinces of the country. The walnut is a tall tree with a height up to 25 m in the forest areas. This tree has been preserved for centuries in the gardens of various provinces to exploit its product; therefore, there are a lot of long-lived stands of walnut. According to a survey, up to 2016, there are 150 long-lived stands of walnut in 27 provinces, of which 104 stands have been recorded. In the present paper, the characteristics of long-lived stands in eight provinces are introduced. Certainly, more stands of long-lived trees will be identified in more provinces and introduced in the next issue. The highest frequency of walnut long-lived stands was recorded in Isfahan province with 24 stands, followed by Qazvin (22 stands), Semnan (21 stands), and North Khorasan (19 stands). The most long-lived walnut stand was recorded in Isfahan province, Kloce village, with almost 900-950 years old and 101 cm of trunk perimeter, followed by Chapanlo long-lived walnut in North Khorasan, and Bage Khan Oregan in Chahar Mahle Bakhtiari province. In addition, a long-lived walnut stand in Qazvin province, Yaroood village, had the widest canopy with 39.1 m of crown diameter and 1200 m2 canopy among all identified long-lived species in Iran.
Keywords
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