| 疏伐对北京西山油松林可燃物特征及潜在火行为影响 |
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| 引用本文： | 宋洁,朱敏,刘晓东,任云卯,王奇峰,金莹杉.疏伐对北京西山油松林可燃物特征及潜在火行为影响[J].北京林业大学学报,2017,39(5):41-47. |
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| 作者姓名： | 宋洁 朱敏 刘晓东 任云卯 王奇峰 金莹杉 |
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| 作者单位： | 1.北京林业大学林学院 |
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| 摘 要： | 本研究在北京西山林场选择不同疏伐强度油松林，疏伐强度分别是未疏伐林分(CK)、低强度疏伐15%(L)、中强度疏伐35%(M)、高强度疏伐50%(H)。通过野外样地调查和室内试验，研究不同疏伐强度对林分可燃物载量及分布特征影响；应用BehavePlus林火软件，研究不同林分潜在火行为特征。结果表明:1)油松林地表可燃物载量随疏伐强度加大而增加，即H>M>L>CK；2)各林分可燃物负荷量垂直分布均以0~2 m层最大，随着高度的增加呈现减少的趋势；3)不同疏伐强度对林分潜在火行为指标(火蔓延速率、火线强度、火焰高度及单位面积发热量)影响显著，趋势为L>CK>M>H。研究结果可为研究地区的森林可燃物管理提供科学依据。
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| 关 键 词： | 油松 疏伐 可燃物特征 地表潜在火行为 |
| 收稿时间： | 2016-11-24 |
Effects of thinning on fuel characteristics and potential fire behaviors of Pinus tabuliformis forest in Beijing West Mountain |
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| SONG Jie,ZHU Min,LIU Xiao-dong,REN Yun-mao,WANG Qi-feng,JIN Ying-shan.Effects of thinning on fuel characteristics and potential fire behaviors of Pinus tabuliformis forest in Beijing West Mountain[J].Journal of Beijing Forestry University,2017,39(5):41-47. |
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| Authors: | SONG Jie ZHU Min LIU Xiao-dong REN Yun-mao WANG Qi-feng JIN Ying-shan |
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| Institution: | 1.College of Forestry, Beijing Forestry University, Beijing, 100083, P. R. China2.Beijing Xishan Mountain Experimental Forest Farm, Beijing, 100093, P. R. China |
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| Abstract: | The typical Pinus tabuliformis forests were selected in Beijing Xishan Experimental Forest Farm. Thinning treatment was conducted with different intensities, i. e. unthinning (0%, CK), low intensity (15%, L ) , moderate intensity ( 35%, M ) , and high intensity ( 50%, H ) . Based on the field investigation, the fuel loading and vertical distribution characteristics of different thinning stands were studied. By using BehavePlus fire model software, the potential fire behaviors of different thinning stands were analyzed. The results indicated that: 1 ) thinning intensity affected the fuel loading of studied stands, with the trend of H>M>L>CK;2) The 0-2 m layer was showed with the highest fuel loading value in all stands, and the fuel loading decreased along with the height increasing;3) The potential fire behaviors, including speed of propagation, heat per unit area, fire line intensity, and flame length, which were all significantly affected by thinning intensity, were showed with the trend of L>CK>M>H. The above results can provide scientific basis for the fuel management in studied area. |
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| Keywords: | Pinus tabuliformis thinning fuel characteristics potential fire behavior |
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