摘要
【目的】为比较内蒙古大兴安岭东麓5种典型树种的燃烧性质差异,对防火林带的选择和配置等基础工作提供参考。【方法】以内蒙古大兴安岭东麓5种典型树种(兴安落叶松、白桦、黑桦、山杨、蒙古栎)为研究对象,每个树种选择胸径≤5 cm、6~10 cm、11~15 cm、≥16 cm各3株标准木,测定各个树种的3个部位(叶、小枝、皮)的4项指标(含水率、燃点、热值、粗灰分),运用主要成分分析法对其进行燃烧性大小的排序,运用聚类分析法对其抗火性等级分类,筛选抗火树种。【结果】5种典型树种中白桦具有高含水率、高燃点、高热值的特性,兴安落叶松具有低燃点、低灰分的特性,蒙古栎具有高灰分、低热值的特性,黑桦含水率最低。5种典型树种燃烧性最强为白桦(6~10),最低为山杨(6~10)。【结论】白桦(11~15、≥16)、蒙古栎(6~10、11~15、≥16)、山杨(≤5、11~15、≥16)可作为阻火优先筛选树种,研究结果可为内蒙古大兴安岭东麓森林着火、蔓延及火灾防控提供理论依据。
【Objective】This paper aims to compare the differences of burning properties of five typical tree species in the eastern foothills of the Great Xing’an Mountains in Inner Mongolia,and to provide reference for the selection and allocation of fireproof forest belts.【Method】Taking 5 typical tree species(Larix gmelini,Betula platyphylla,Betula davurica,Populus davidiana,Quercus mongolica)at the eastern foot of the Great Xing’an Mountains in Inner Mongolia as the research object,for each tree species,choose 3 standard trees with diameter at breast height≤5 cm,6-10 cm,11-15 cm,≥16 cm,determine 3 parts(leaf,twigs,bark)and 4 indicators(moisture content,ignition point,calorific value,crude ash content)of each tree species,use main component analysis method to rank combustibility,and use cluster analysis method classify their fire resistance levels and screen fire-resistant tree species.【Result】Among the five typical tree species,Betula platyphylla had the characteristics of high water content,high ignition point and high calorific value,Larix gmelinii had the characteristics of low ignition point and low ash,Quercus mongolica had the characteristics of high ash and low calorific value,Betula platyphylla had the characteristics of high ash and low calorific value.Among the five typical tree species,Betula platyphylla(6-10)had the highest burning ability,while Populus davidiana(6-10)had the lowest burning ability.【Conclusion】Betula platyphylla(11-15,≥16),Querus mongolica(6-10,11-15,≥16),Populus davidiana(≤5,11-15,≥16)can be selected as the priority tree species for fire prevention.The results can provide a theoretical basis for forest fire,spread and fire prevention and control in the eastern foothills of Great Xing’an Mountains in Inner Mongolia.
作者
张今奇
周梅
赵鹏武
舒洋
郭娇宇
李威
管立娟
ZHANG Jin-qi;ZHOU Mei;ZHAO Peng-wu;SHU Yang;GUO Jiao-yu;LI Wei;GUAN Li-juan(College of Forestry,Inner Mongolia Agricultural University,Hohhot 010019;Inner Mongolia Saihanwula Forest Ecosystem National Research Station,Chifeng 025150)
出处
《温带林业研究》
2021年第1期27-33,共7页
Journal of Temperate Forestry Research
基金
国家自然科学基金项目(41530747)。
关键词
大兴安岭
理化性质
燃烧性
主成分分析
聚类分析
Great Xing’an Mountains
physicochemical properties
combustibility
principal component analysis
cluster analysis
