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当前位置: 首页 > 文章 > 滇东北地区华山松与云南松的地表凋落物载量及火强度对比研究 西南林业大学学报(自然科学) 2019 (5) 151-156
Position: Home > Articles > 滇东北地区华山松与云南松的地表凋落物载量及火强度对比研究 Journal of Southwest Forestry University(Natural Sciences) 2019 (5) 151-156

滇东北地区华山松与云南松的地表凋落物载量及火强度对比研究

作  者：
徐伟恒;吴超;杨磊;徐盛基;秦明明;王秋华
单  位：
应急管理部南方航空护林总站;西南林业大学土木工程学院;西南林业大学大数据与智能工程学院
关键词：
凋落物;可燃物载量;火强度;华山松;云南松;滇东北
摘  要：
通过调研、布设样地样方、取样方可燃物等过程,将滇东北地区的优势树种华山松、云南松的地表凋落物划分为枯枝、凋落物上层和凋落物下层3个层级,分别收集后在实验室燃烧床上分别以下坡点火和上坡点火的方式,模拟实际森林样地坡度的上坡火和下坡火的燃烧状况,测定其不同点火方式的火行为参数.结果表明:云南松的地表凋落物烧除率远远高于华山松地表凋落物的烧除率,二者可燃物载量除凋落物下层外基本保持一致,热辐射值也基本一致,但二者均低于弱强度火界定值500 kW/m.因此,当前滇东北地区难以形成树冠火.
作  者：
Xu Weiheng;Wu Chao;Yang Lei;Xu Shengji;Qin Mingming;Wang Qiuhua;College of Big Data and Intelligent Engineering, Southwest Forestry University;Institute of Big Data and Artificial Intelligence, Southwest Forestry University;Key Laboratory of National Forestry and Grassland Administration on Forestry and Ecological Big Data, Southwest Forestry University;Southern General Station of Aerial Forest Protection Ministry of Emergency Management;College of Civil Engineering, Southwest Forestry University;
单  位：
Xu Weiheng%Wu Chao%Yang Lei%Xu Shengji%Qin Mingming%Wang Qiuhua%College of Big Data and Intelligent Engineering, Southwest Forestry University%Institute of Big Data and Artificial Intelligence, Southwest Forestry University%Key Laboratory of National Forestry and Grassland Administration on Forestry and Ecological Big Data, Southwest Forestry University%Southern General Station of Aerial Forest Protection Ministry of Emergency Management%College of Civil Engineering, Southwest Forestry University
关键词：
litter;;combustible load;;fire intensity;;Pinus armandii;;Pinus yunnanensis;;northeastern Yunnan
摘  要：
Through the investigation, layout of sample plots, sampling of combustibles and other processes.The surface litter of the dominant species, Pinus armandii and P. yunnanensis, in northeastern Yunnan are divided into 3 levels: dead branch, upper layer litter and lower layer litter. After the collection, respectively, the following slope ignition and uphill ignition methods were performed on the laboratory combustion bed to simulate the combustion conditions of the uphill and downhill fires of the actual forest plot slope, and the fire behavior parameters of different ignition modes were determined. The results show that the burning rate of surface litter in P. yunnanensis is much higher than that in P. armandii. The combustible load of the 2 materials is basically the same except for the lower layer of litter, and the heat radiation values are basically the same, but both of them are lower than the weak intensity fire value of 500 kW/m. Therefore, it is difficult to form a canopy fire in northeastern Yunnan.

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