The thermogravimetric analysis of non-decomposition layer, semi-decomposition layer and humus layer of Pinusarman?dii, Pinusyunnaneneis and Cupressustorulosa were carried out. The calculation and analysis on 3 kinds of litter which has 3 layers, a total of 9 samples, were carried out to get the activation energy, ignition temperature, combustion temperature, pyrolysis and com?bustion parameters. The corresponding pyrolysis kinetic equation was established. The analysis showed that the order of the combus?tion performance of the litter in the 3 layers from strong to weakis non-decomposition layer, semi-decomposition layer, humus layer. The combustion performance of the 3 kinds of litter from strong to weak was Pinusarmandii, Pinusyunnaneneis and Cupressustorulo?sa.%分别对华山松、云南松、藏柏3种林下凋落物未分解层(L)、半分解层(F)、腐殖质层(H)进行了热重实验,计算和分析3种凋落物3个层次共9种样品的活化能、着火温度、燃烬温度等热解和燃烧参数,建立了相应的热解动力学方程.分析表明:3个层次的凋落物燃烧性由强到弱的顺序是:L层>F层>H层,3种凋落物的燃烧性由强到弱依次为:华山松、云南松、藏柏.
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