Open Ethan fire hole observation, coal layer surface in a furnace, appear local fire blaze, burning through phenomenon.

开启探火孔观察，炉内料层表面一片火光，出现局部冒火，烧穿现象。

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Fire can also reduce the content of organic matter (SOM) in the surface layer, and it's most obvious in the O and A soil layers at the same year after burning.

火烧会减少湿地土壤的有机质含量，火烧当年湿地土壤草根层与腐殖质层有机质含量下降尤为明显；

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