上海市常见26种园林树种燃烧性评价

Combustibility Evaluation of 26 Landscape Tree Species in Shanghai

摘要:

对上海市常见的26种园林树种的枝条、叶片、树芯进行燃烧实验，测定其含水率、树皮厚度、比叶面积、燃烧热值、燃烧时间与温度变化等14个燃烧性指标，综合评价了各树种的抗火性特征，发现比叶面积指标对树种燃烧性影响较大。通过方差分析，阐述了树种功能性状与燃烧特征之间的相关性，并基于聚类分析将26种园林树木按照其燃烧特征分为防火能力强、中、差3类，确定了上海市应对火灾的园林树种选择的优化链。

Abstract:

The combustion experiments of branches， leaves and cores of 26 landscape tree species in Shanghai were conducted. Fourteen combustion indexes including moisture content， bark thickness， specific leaf area， combustion calorific value， combustion time and temperature change were determined， of which the specific leaf area was the most important. The fire resistance characteristics of each tree species were evaluated comprehensively. Based on the analysis of variance， the correlation between the functional traits of tree species and the burning characteristics was elaborated. According to their burning characteristics， twenty-six species of landscape trees were divided into 3 categories： strong， medium， and weak. Then the optimal chain of landscape tree species selection for fire response in Shanghai was determined by cluster analysis at last.