| 秦岭火地塘林区4种林分地被物林火蔓延特性研究 |
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| 引用本文： | 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. |
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| 作者姓名： | 王得祥 朱德兰 徐钊 江文波 王晓琴 |
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| 作者单位： | 西北农林科技大学 林学院, |
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| 基金项目： | 国家林业局重点项目“陕西秦岭火地塘 生态系统结构、功能及稳定性机理的定位研究”(9630)。 |
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| 摘 要： | 以秦岭火地塘林区油松、华山松、锐齿栎和落叶松4种林分地被物为研究对象，测定 了4种林分地被物在春季防火期林火蔓延指标随含水率的变化趋势及其灭火含水率，在此基础上计 算各林分地被物的水分贮量、潜在能量、能量释放和火强度指标。结果表明:4种林分地被物含水率最小值 分别保持在6.8,8.9,8.4和4.7左右；在一定的范围内，4种地被物含水率与林火蔓延速度之间均呈 密切的指数相关关系,其灭火含水率分别是36.8、36.3、28.3和30.3；华山松和油松两种林分地被物潜 在能量明显高于锐齿栎和落叶松林。临近灭火
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| 关 键 词： | 地被物 林火蔓延指标 含水率 潜在能量 火强度 |
| 文章编号： | 1001-7461(2001)0 1-0044-04 |
| 修稿时间： | 2000年7月24日 |
Fire Spread Properties of Four Forest Litters at Huoditang Forest Region in th e Qinling Mountains |
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| WANG De-xiang,ZHU De-lan,XU Zhao,JIANG Wen-bo,WANG Xiao-qin.Fire Spread Properties of Four Forest Litters at Huoditang Forest Region in th e Qinling Mountains[J].Journal of Northwest Forestry University,2001,16(1):44-47. |
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| Authors: | WANG De-xiang ZHU De-lan XU Zhao JIANG Wen-bo WANG Xiao-qin |
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| Institution: | 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 |
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| 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. |
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| Keywords: | litters fire spread index moisture content potential energy fire intensity |
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