A study of emissions and marker gases from smouldering combustion in Larix gmelinii plantations of the Daxing’an Mountains
Shuyuan Tang , Sainan Yin , Yanlong Shan , Bo Gao , Long Sun , Xiyue Han , Mingxia Wang , Mingyu Wang , Zongshi Chen
Journal of Forestry Research ›› 2021, Vol. 33 ›› Issue (1) : 195 -201.
A study of emissions and marker gases from smouldering combustion in Larix gmelinii plantations of the Daxing’an Mountains
Underground fires are characterized by smouldering combustion with a slow rate of spread rate and without flames. Although smouldering combustion releases large amounts of gaseous pollutants, it is difficult to discover by today’s forest fire monitoring technologies. Carbon monoxide (CO), nitrogen oxides (NOx) and sulfur dioxide (SO2) were identified as high concentration marker gases of smouldering combustion-easily-be monitored. According to a two-way ANOVA, combustion time had a significant impact on CO and NOx emissions; smoldering -depth also had a significant impact on NOx emissions but not on CO emissions. Gas emission equations were established by multiple linear regression, C co = 156.989 − 16.626 t and C NOx = 3.637 − 0.252 t − 0.039 h.
Gas emissions / Marker gases / Influence factors / Smouldering combustion
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