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

NT Minh, K Koyano, H Mizunaga
2021 Journal of Tropical Forest Science  
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
more » ... simulation (RIAM-COMPACT), 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.
doi:10.26525/jtfs2021.33.4.501 fatcat:hox7qjrfsnahfett3345ua4q6u