滇西北地区典型苔藓植物的引燃特性研究
Study on ignition probability of typical bryophytes in northwest Yunnan
许行健 1白磊 1普思伟 1李世友2
作者信息
- 1. 西南林业大学 消防研究所,云南 昆明 650224
- 2. 西南林业大学 消防研究所,云南 昆明 650224;云南省森林灾害预警与控制重点实验室,云南 昆明 650224
- 折叠
摘要
为研究地表苔藓植物的引燃特性,以滇西北地区广泛分布的多蒴曲尾藓、锦丝藓为试验对象,以香烟和柱香作为引火源,在森林防火紧要期,研究了2种苔藓植物在不同试验条件下的引燃率.利用SPSS Statistics 27.0 建立多元线性回归方程,并对该回归方程进行了检验.分析结果表明,各影响因素对多蒴曲尾藓引燃率影响程度大小排序为热释放速率>火源燃烧速率>苔藓含水率>火源直径>气温>相对湿度,对锦丝藓引燃率影响程度大小排序为苔藓含水率>气温>火源燃烧速率>火源直径>相对湿度>热释放速率.多蒴曲尾藓、锦丝藓模型拟合优度分别为 0.820、0.893.通过残差分析得知,多蒴曲尾藓、锦丝藓引燃率预测结果误差分布为±8.895%、±5.845%.研究结果可以为滇西北地区地表可燃物的管理、火险预警等提供依据,为深入开展苔藓植物的火灾风险辨识与评价奠定基础.
Abstract
In order to study the ignition characteristics of surface bryophyte,Dicranum majus and Actinothuidium hookeri,which are widely distributed in northwest Yunnan,were taken as the test objects,and cigarettes and incense were used as ignition sources.The ignition ratio of two bryophytes under different ex-perimental conditions was determined.The multiple linear regres-sion equation was established by SPSS Statistics 27.0,and the re-gression equation was tested.The results showed that the order of influencing factors on ignition rate of Dicranum majus is:heat re-lease rate>fire burning rate>moisture content>fire diam-eter>temperature>relative humidity.The order of influence degree of ignition rate of Actinothuidium hookeri is:moisture con-tent>temperature>ignition rate>diameter of fire source>relative humidity>heat release rate.The goodness-fit of the model was 0.820 and 0.893,respectively.Residual analysis showed that the predicting deviation of ignition rate was±8.895%and±5.845%respectively.The research results can provide a basis for the management of surface fuels and fire risk warning in northwest Yunnan,and lay a foundation for further identification and evaluation of bryophyte fire risk.
关键词
滇西北地区/苔藓/香烟/柱香/引燃特性Key words
northwest Yunnan/bryophytes/cigarette/pillar in-cense/ignition characteristic引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据