园林树木的形态特征与阻火能力的相关性

Correlation between Morphological Characteristics and Fire-Retardant Capabilities of Landscape Trees

文章以上海常见的32种园林树种为研究对象,以提升绿地的阻火能力为目标,分析了遮热率与树高、枝下高、冠幅、枝下比、孔隙率、叶面积指数、树冠比、叶面积等形态因子的相关性;在提出抗火树种选择优化链的基础上,分析了影响遮热率的指标差异和不同生物学特性因子之间的差异。结果表明:树木形态是影响树木防火能力的重要指标,树冠直接影响着树木的防护能力,综合评价显示珊瑚树和落羽杉具备较强的防火能力与防护能力。

Taking 32 common landscape tree species in Shanghai,the paper analyzes the correlation between the thermal insulating ratio and the morphological factors including the tree height(TH),under branch height(UBH),crown width(CW),under branch ratio(UBR),porosity(P),leave area index(LAI),crown ratio(CR)and leave area(LA),aiming at improving the fire retardant capability for urban green space.On the basis of putting forward the optimization chain of landscape trees selection in terms of fire retardant capability.The results showed that the tree morphology was an important index affecting the fire prevention ability of trees,and the crown directly affected the protection ability of trees.The comprehensive evaluation showed that Viburnum odoratissimum and Taxodium distichum had stronger fire prevention and protection ability.