ASSESSING WIND DAMAGE RISK IN COMPLEX TERRAIN USING AN AERODYNAMIC MODEL IN ACACIA HYBRID PLANTATIONS IN QUANG TRI, VIETNAM

Authors

  • Minh NT
  • Koyano K
  • Mizunaga H

Keywords:

Wind hazard assessment, Acacia hybrid plantation, complex terrain, airflow simulation

Abstract

Wind damage to both forest plantations and natural forests is a serious concern for forest owners and managers across the world. In this paper, stand attributes (the dominant height of a stand, stand age, soil type and soil depth) and wind properties (wind speed) in a complex terrain were combined to provide wind hazard assessment. The damage to Acacia hybrid plantations was analysed by applying logistic regression models in R-software and using satellite images (LANDSAT-8) combined with airflow simulation (RIAMCOMPACT), to explore the effects of contributing factors in a wind hazard model after Typhoon Doksuri hit on Quang Tri, Vietnam. The results highlighted that the probability of damage is related to increasing tree height of stands and slope (p < 0.05), and wind speed. The hazard ratio regarding wind damage is also governed by soil type (p < 0.05). A growth height curve and site index map were also developed with high accuracy (91and 87.9%, respectively) for all Acacia plantations in Quang Tri, Vietnam. The results would be helpful to understand the interaction between wind damage and stand attributes, providing a fluid model of predicting wind condition and wind risk in a complex topography region.

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Published

2021-11-10

How to Cite

NT, M., Koyano K, & Mizunaga H. (2021). ASSESSING WIND DAMAGE RISK IN COMPLEX TERRAIN USING AN AERODYNAMIC MODEL IN ACACIA HYBRID PLANTATIONS IN QUANG TRI, VIETNAM. Journal of Tropical Forest Science (JTFS), 33(4), 501–515. Retrieved from https://jtfs.frim.gov.my/jtfs/article/view/114

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Articles
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