Forthcoming

Monitoring of Oak decline phenomenon and their impact on biomass and leaf area in the forest stand, Yasouj

Authors

  • Yousef Askari Research Division of Forest, rangeland and watershed, Kohgiluyeh and Boyerahmad Agriculture and Natural Resources Research and Education Center, AREEO, Yasouj, Iran
  • Hassan Jahanbazi Research Division of Natural Resources, Chaharmahal and Bakhtiari Agriculture and Natural Resources Research and Education Center, AREEO, Shahrekord, Iran
  • Mehdi Pourhashemi Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran

DOI:

https://doi.org/10.5281/zenodo.15252950

Keywords:

Crown dieback, Healthy, Leaf area, Tree

Abstract

Monitoring forest stands can provide valuable information to forest managers. This study shows the phenomenon of Persian oak decline in a 1-hectare plot. The study was performed over four years, and it was used to see the changes in leaf dieback, with all of the trees, a total of a hundred trees, were analyzed. Trees were classified into four dieback categories: healthy trees, trees with crown dieback, trees with less than 50% crown dieback, and trees and trees that had more than 50% crown dieback. Trees that had the dieback. Also, leaf area was monitored. In the first year of the study, 65% of trees experienced crown dieback. There was a change in dieback, and after a year, 10 to 25% more trees had crown dieback. Over time, it reached about 80%. According to the research, the leaf area decreases from the healthy category to the completely dead one. It turns out the average leaf area in high forest trees was higher than in coppice trees. The study of leaf area also showed a strong correlation between the crown dieback and leaf size. The study also found that the trees with a crown dieback of over 50%, had consistently smaller leaves than healthy trees.

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Published

2025-04-20

How to Cite

Askari, Y., Jahanbazi, H., & Pourhashemi, M. (2025). Monitoring of Oak decline phenomenon and their impact on biomass and leaf area in the forest stand, Yasouj. Journal of Wildlife and Biodiversity, 9(X). https://doi.org/10.5281/zenodo.15252950

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Original Article