西北林学院学报2001，Vol.16Issue(1)：44-47,4.
秦岭火地塘林区4种林分地被物林火蔓延特性研究
Fire Spread Properties of Four Forest Litters at Huoditang Forest Region in th e Qinling Mountains
王得祥 1朱德兰 1徐钊 1江文波 1王晓琴1
作者信息
摘要
Abstract
Fire spread index of litters in the sharptooth oak, armand pine, chinese pin e and larix principis-rupprechtii forests and their variation with moisture content were measured in the spring se ason. The relationship between moisture content and fire spread index was analyzed using no-liner regression, and also the water storage, potential energy, energy release and fire intensity index were calculated on the basis of measured date. The results showed that obvious index relationship was exist between moisture content of litters an d their spread velocity. The minimum moisture content of four litters are about 6.8%,8.9%,8.4% and 4.7% respe ctively, and the extinguishing moisture content were 36.8%,36.3%,28.3% and 30.3, the potential energy of armand pine and chinese pine were higher than sharptooth oak and larix principis-rupprechtii, energy release of sharptooth oak and larix pri ncipis-rupprechtii were only 42.3％ ,43.6％ and 29.7％, 30.6％ respectively compared with chinese pine and armand pine. Fire intensity for their litters decreased about 87.8％、86.4％、86.4％ and 90.6 ％ in the range of m inimum moisture content to extinguishing moisture content.关键词
地被物/林火蔓延指标/含水率/潜在能量/火强度分类
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王得祥,朱德兰,徐钊,江文波,王晓琴..秦岭火地塘林区4种林分地被物林火蔓延特性研究[J].西北林学院学报,2001,16(1):44-47,4.
