基于热重分析的南昌地区8种森林的可燃物三维燃烧性评价  

Evaluation of three-dimensional flammability of eight forest fuels based on thermogravime-tric analysis in Nanchang region,China

作　　者：金森[1] 王舜娆 

机构地区：[1]东北林业大学林学院,哈尔滨150040

出　　处：《应用生态学报》2015年第12期3657-3662,共6页Chinese Journal of Applied Ecology

基　　金：林业公益性行业科研专项(201204508)资助

摘　　要：通过对南昌8种森林可燃物的热重分析,石开究了其热解特性,并根据热解参数对其燃烧性中的易燃性、剧烈性和持续性3个维度进行评价.结果表明:8种森林可燃物可分为两大类厂类是香樟和油茶,易燃但燃烧相对不剧烈持,续时间短;另一类是鹅掌楸、银杏、雪松、桂花、楠竹、阴香,不易燃但燃烧相对剧烈和持续.燃烧性的3个维度的评价往往不相同,对于所研究的8种可燃物,一些可燃物易燃但不剧烈、不持续,另外一些可燃物不易点燃但燃烧剧烈或持续,说明了燃烧性内涵的复杂性和分维度评价燃烧性的必要性.3个维度的评价能够更完整地反映可燃物燃烧性的不同侧面,有助于更好地理解和解释森林可燃物的火行为.Pyrolysis characteristics of litter of eight tree species in Nanchang were studied based on thermogarvimetric analysis results.Three components of flammability of the eight species,i.e.ignitibility,combustibility and sustainability,were evaluated by pyrolysis parameters obtained from the analysis.Results showed that the eight species could be grouped into two categories：the first one included Camellia oleifera and Cinnamomum camphora,which were highly ignitable but low combustible and sustainable,the other included Cedrus deodara,Liriodendron chinensis,Phyllostachys heterocycla,Cinnamomum burmanni,Osmanthus fragrans and Ginkgo biloba,which were low ignitable but highly combustible and sustainable.This further indicated that rankings by each flammability component were usually not identical,showing the complexity of flammability and necessity of multi-dimensional flammability evaluation.Three-dimensional flammability evaluation could reflect different profiles of the feature and aid better understanding and explanation of fire behavior.

关 键 词：可燃物 热重分析 燃烧性 易燃性 剧烈性 持续性 

分 类 号：S762[农业科学—森林保护学]