The trend of crown density changes in the coppice forests of Marivan, Kurdistan province (west of Iran)

Document Type : Scientific Letters

Authors

1 Assistant Professor, Forests and Rangelands Research Department, Kurdistan Agricultural and Natural Resources Research and Education Center, AREEO, Sanandaj, Iran

2 Associate Professor, Forests and Rangelands Research Department, Chaharmahal and Bakhtiari Agricultural and Natural Resources Research and Education Center, AREEO, Shahrekord, Iran

3 Professor, Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran

4 Instructor, Forests and Rangelands Research Department, Chaharmahal and Bakhtiari Agricultural and Natural Resources Research and Education Center, AREEO, Shahrekord, Iran

10.22092/irn.2024.130995

Abstract

Crown canopy is a major structural characteristic of forest trees and is vital to their ecological function. The present study investigated tree crown changes in Marivan County coppice forests. This research was conducted in two forest areas, Garan and Doleh Naw. First, five trees were selected for each habitat. The crown of each tree was photographed in the four main geographical directions one meter from the tree trunk. It was done in September 2021 and 2022. Tree canopy measurement in each image was done using MIP Cloud4 student software. Paired t-test was used to compare tree canopy percentages in two imaging periods. According to the results, the canopy of trees in Garan and Dolah Naw habitats in 2022, compared to 2021, increased by 9.02% and 11.51%, respectively. Meanwhile, in the habitats of Garan and Dolah Naw, the highest increase and change in the tree crown was observed on the southern and eastern sides of the tree crown. Also, from 2021 to 2022, the weather conditions improved. Dolah-Naw habitat trees had slightly larger average parameters than the Garan habitat. Irrigation of degraded areas (with increasing tree crowning) is crucial for sustainable management due to the importance of tree crown canopy in forest stand functions.

Keywords

References

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Iran Nature
Volume 8, Issue 6 - Serial Number 43
March and April 2024
Pages 63-68

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