长白山风灾区不同恢复区地表细小可燃物热解特征及燃烧性评价  

Thermal Decomposition Characteristics and Combustibility Evaluation of Surface Fine Fuel in Different Recovery Zones of Changbai Mountain Wind Disaster Zone

作　　者：于渤 冯世龙 陈响 朱宾宾 朱怀远 孙素芹 曹丽丽 于淼欣 谢文君 单延龙[1,2] YU Bo;FENG Shilong;CHEN Xiang;ZHU Binbin;ZHU Huaiyuan;SUN Suqin;CAO Lili;YU Miaoxin;XIE Wenjun;SHAN Yanlong(Science and Technology Innovation Center of Wildland Fire Prevention and Control,Beihua University,Jilin 132013,China;Forestry College of Beihua University,Jilin 132013,China;Development Center of Forestry and Glassland in Hulun Buir,Hulun Buir 021000,China;Wangqing Forestry Branch Office of Changbai Mountain Forest Industry Group Co.,Ltd.,Wangqing 133200,China)

机构地区：[1]北华大学森林草原防灭火科技创新中心,吉林吉林132013 [2]北华大学林学院,吉林吉林132013 [3]呼伦贝尔市林业和草原事业发展中心,内蒙古呼伦贝尔021000 [4]长白山森工集团有限公司汪清林业分公司,吉林汪清133200

出　　处：《北华大学学报(自然科学版)》2025年第3期297-303,共7页Journal of Beihua University(Natural Science)

基　　金：吉林省科学技术厅重点研发项目(20220203189SF);国家自然科学基金项目(32271881);北华大学研究生创新计划项目(2023011)。

摘　　要：森林可燃物是指林内可燃烧的一切物质,可燃物的热解过程是燃烧过程的重要组成部分,对于森林火灾风险评估、林火发生防控及危害程度预测具有重要的理论指导意义。以长白山风灾区不同恢复区地表细小可燃物为研究对象,通过野外调查和室内试验,基于热重分析法全面掌握风灾区不同恢复区主要地表细小可燃物热解过程,量化细小可燃物热解参数,评价其燃烧性。结果表明:长白山风灾区不同恢复区地表细小可燃物的热解过程可分为失水阶段、失重阶段和炭化阶段;杂乱物1 h时滞可燃物热解的质量损失率和失重速率都明显高于草本和凋落物。不同恢复区的草本可燃物热解参数之间存在显著差异(P<0.05),杂乱物1 h时滞可燃物的热解参数之间不存在显著差异(P>0.05)。不同恢复区地表细小可燃物的燃烧性由强到弱依次为原始林地保留区杂乱物1 h时滞可燃物>半恢复区杂乱物1 h时滞可燃物>恢复区杂乱物1 h时滞可燃物>半恢复区草本>半恢复区凋落物>未恢复区草本>恢复区草本>恢复区凋落物>原始林地保留区草本>原始林地保留区凋落物;原始林地保留区杂乱物1 h时滞可燃物、半恢复区杂乱物1 h时滞可燃物和恢复区杂乱物1 h时滞可燃物的燃烧性最强。Forest fuel refers to all combustible substances in the forest,and the pyrolysis process of fuel is an important component of combustion process.It has important theoretical guidance significance for forest fire risk assessment,prevention and control,and hazard prediction.Taking the surface fine fuel in different recovery areas of Changbai Mountain wind disaster zone as the research object,through field investigation and indoor experi-ments,based on thermogravimetric analysis,the main surface fine fuel pyrolysis process in different recovery areas of the wind disaster zone is comprehensively grasped,and the pyrolysis parameters of fine fuel are quantified to evaluate their combustibility.The research results indicate that the pyrolysis process of surface fine fuel in different recovery zones of Changbai Mountain wind disaster zone can be divided into dehydration stage,weight loss stage,and carbonization stage.The mass loss rate and weight loss rate of the slash with 1-hour delay are significantly higher than those of herbs and litter.There are significant differences in the pyrolysis parameters of herbaceous fuel in different recovery zones(P<0.05),while there are no significant differences in the pyrolysis parameters of slash with 1-hour delay(P>0.05).The flammability of surface fine fuel in different recovery zones,from strong to weak,is as follows:slash with 1-hour delay of original forest reserve zone>slash with 1-hour delay of the semi-restored zone>slash with 1-hour delay of the restoration zone>herbs of the semi-restored zone>litter of the semi-restored zone>herbs of the unrecovered zone>herbs of the restoration zone>litter of the restoration zones>herbs of the original forest reserve>litter of the original forest reserve.Among them,the burning property of slash with 1-hour delay of original forest reserve zone,slash with 1-hour delay of the semi-restored zone,and slash with 1-hour delay of the restoration zone is the strongest.

关 键 词：长白山风灾区 恢复区 热解过程 燃烧性 因子分析 

分 类 号：S762[农业科学—森林保护学]