主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2021, Vol. 40 ›› Issue (10): 1521-1524.

• • 上一篇    下一篇

内蒙古毕拉河林区地表死可燃物热解特性

张今奇1，周 梅1，赵鹏武2，舒 洋1   

  1. 1.内蒙古农业大学 林学院，内蒙古 呼和浩特 010019；2.内蒙古赛罕乌拉森林生态系统国家定位观测研究站，内蒙古 赤峰 025150
  • 出版日期:2021-10-15 发布日期:2021-10-15
  • 作者简介:张今奇（1996-），男，内蒙古赤峰人，内蒙古农业大学林学院硕士研究生，主要从事森林生态研究，内蒙古自治区呼和浩特市，010019。

Pyrolysis characteristics of ground dead combustibles in the Bilahe forest area in Inner Mongolia

ZHANG Jin-qi1，ZHOU Mei1，ZHAO Peng-wu2，SHU Yang1   

  1. 1. College of Forestry, Inner Mongolia Agricultural University, Inner Mongolia Hohhot 010019, China; 2. Inner Mongolia Saihanwula Forest Ecosystem National Research Station, Inner Mongolia Chifeng 025150, China
  • Online:2021-10-15 Published:2021-10-15

摘要： 以兴安落叶松-白桦混交林等5种森林枯落物层类为研究对象，运用热重分析法，通过TG-DTG曲线分析样品的热解过程，利用Coats-Redfern积分法对样品的快速热解阶段进行动力学分析，通过着火温度、活化能E与热解特性指数P的综合分析，评价各可燃物样品的燃烧特性。结果表明：264～411 ℃是快速热解阶段，也是热失重的主要阶段，失重量达初始失重量的82.26%以上。其中兴安落叶松林活化能E相对较高，热稳定性相对较强，兴安落叶松-白桦混交林热解特性指数P相对较低，热解行为相对较难。可以营造兴安落叶松-白桦混交林，作为防火树种并建立防火隔离带，能够降低林分燃烧特性，减小森林火灾发生的可能性。

关键词: 毕拉河林区, 热重分析, Coats-Redfern积分法, 活化能, 热解特性指数

Abstract: Taking five forest types such as Xing'an larch birch mixed forest as the main research object, the pyrolysis process of the sample was analyzed by TG-DTG curve by thermogravimetric analysis, the kinetic analysis of the rapid pyrolysis stage of the sample was carried out by Coats-Redfern integral method, and the comprehensive analysis of ignition temperature, activation energy E and pyrolysis characteristic index P was carried out, in order to evaluate the fire resistance of each combustible sample. The results show that 264 ~ 411 ℃ is the rapid pyrolysis stage and the main stage of thermal weight loss, and the weight loss reaches more than 82.26% of the initial weight loss. Among them, the activation energy E of Xing'an larch forest is relatively high, the thermal stability is relatively strong, the pyrolysis characteristic index P of Xing'an larch birch mixed forest is relatively low, and the pyrolysis behavior is relatively difficult. Building Xing'an larch birch mixed forest as a fire prevention tree species and establishing a fire isolation zone can reduce the combustibility of the forest and reduce the possibility of forest fire.

Key words: Bilahe forest, thermogravimetric analysis, Coats-Redfern integral method, activation energy, pyrolysis characteristic index