文献类型：期刊文献

中文题名：广州城市森林主要林型可燃物空间分布与燃烧性等级

英文题名：Spatial distribution and combustibility of fuels of main forest types in Guangzhou City

作者：王庆飞[1,3] 郝泽周[1] 李乐[1] 高丙涛[1] 王圣洁[1] 洪维[2] 庄晓纯[2] 李嘉睿[1] 裴男才[1]

第一作者：王庆飞

机构：[1]中国林业科学研究院热带林业研究所,广州510520;[2]广东省龙眼洞林场,广州510520;[3]浮梁县森林资源监测中心,江西浮梁333400

年份：2025

卷号：44

期号：3

起止页码：780-789

中文期刊名：生态学杂志

外文期刊名：Chinese Journal of Ecology

收录：;北大核心:【北大核心2023】；

基金：中国林科院基本科研业务费专项资金项目(CAFYBB2023MB017);广州市基础研究计划基础与应用研究项目(2024A04J3878);生态环境部华南环境科学研究所科技成果转化项目(RITFHZXY2024?24)资助。

语种：中文

中文关键词：可燃物载量;燃烧性;林火行为;森林火险等级;地基激光雷达

外文关键词：fuel load;combustibility;forest fire behavior;forest fire risk;terrestrial laser scanning

分类号：S762.2

摘要：森林可燃物空间分布和燃烧性对森林火灾的发生和蔓延具有决定作用。选取广州城市森林中16种主要林分,利用地基激光雷达反演林分结构特征和可燃物空间分布,通过地面实测和标准采样法测定林分地表可燃物载量,同时采集林内优势树种叶片测定其理化性质。利用单因素方差分析比较不同林分的可燃物空间分布和优势树种叶片理化性质差异,分析潜在火行为和火灾危险性,运用主成分分析计算不同林分燃烧性综合得分并通过聚类分析划分为不同火险等级。结果表明:16种林分的可燃物空间分布和优势树种叶片理化性质存在显著差异,根据燃烧性可划分为4个火险等级:马尾松纯林、杉木纯林为高火险林分,松阔混交林、杉阔混交林、米锥林、桉树林、台湾相思林为较高火险林分,木荷林为低火险林分,阔叶混交林、黧蒴锥林、大叶相思林、锥栗林、尖叶杜英林、华润楠林、鸭脚木林、枫香林为较低火险林分。针对不同林分的燃烧性和火险等级,提出对应的可燃物管理措施和营林防火对策,为广州地区森林防火资源部署和防火林带建设提供理论支撑和科学指导。
The spatial distribution and combustibility of forest fuels are decisive for the occurrence and spread of forest fires.In this study,stand structure characteristics and fuel spatial distribution in 16 forest stands from Guangzhou City were obtained by terrestrial laser scanning.The surface fuel load was measured by ground measurement and standard sampling methods.Leaves of dominant tree species in different stands were collected to measure physicochemical properties.One-way ANOVA was used to compare the spatial distribution of fuels and the differences in the physicochemical properties of leaves of dominant tree species among different stands,to analyze the potential fire behaviors and fire dangers.The comprehensive scores of combustibility of different stands were calculated by principal component analysis(PCA),while the fire risk grading was classified by cluster analysis.The results showed that there were significant differences in spatial distribution of fuels and the physicochemical properties of leaves of dominant tree species among 16 forest stands.The 16 forest stands could be classified into four fire danger grades based on combustibility:(1)Pinus massoniana forest and Cunninghamia lanceolata forest had the very high fire risk;(2)pine and broadleaved mixed forest,Cunninghamia lanceolata and broadleaved mixed forest,Castanopsis chinensis forest,Eucalyptus forest,and Acacia confusa forest had high fire risk;(3)Schima superba forest had the moderate fire risk;(4)broadleaved mixed forest,Castanopsis fissa forest,Acacia auriculiformis forest,Castanea henryi forest,Elaeocarpus apiculatus forest,Machilus chinensis forest,Schefflera octophylla forest,and Liquidambar formosana forest had low fire risk.According to the combustibility and fire risk grade of different stands,the corresponding fuel management measures and forest fire prevention countermeasures were proposed,which would provide theoretical support and scientific guidance for the deployment of forest fire prevention resources and the construction of fire prevention forest belt in Guangzhou.