亚热带城市84种常见园林树种的抗火性评价OA

This study focuses on 84 landscape tree species in two major subtropical cities such as Shanghai City and Chongqing City.Based on a field survey,experimental combustion and morphological anatomical to determine multi-dimensional indicators of leaves,branches and barks,and a comprehensive fire resistance assessment model was constructed to evaluate the fire-resistance capability of trees.The correlation analysis results show that branches and leaves are key to fire-resistance capability of tree species,and the combustion character is the dominate factor,instead,functional traits have a certain indicative effect.The experiment results verify that 8 tree species including Erythrina variegata,Viburnum odoratissimum,and Nerium oleander,etc.have strong fire-resistance ability while 8 tree species including Michelia alba,Jacaranda mimosifolia,and Bombax ceiba,etc.have weak ability for fire-resistance;among the new-introduced species,Cupressus arizonica'Blue Ice'has a stronger fire-resistance abilityin comparison with the other species.Based on the study results and the green space characteristics of Shanghai City and Chongqing City,a differentiated fire-resistant planting plan is proposed to enhance the ecological resilience of landscape tree species,ensuring the ecological safety of urban green systems and the health of green spaces.