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通过对黔东南州七个县杉木林内可燃物的调查分析，提出杉木林内的死可燃物载量是引发森林火灾的一大隐患。对黔东南州森林火灾火源进行分析，结果表明，烧荒垦荒、其它火、炼山造林、野外吸烟为引起森林火灾的四大主要火源，占已查明火源森林火灾总数的74．9％。
Based on the investigation and analysis of combustibles in fir forests in seven counties of Qiandongnan Prefecture, it is proposed that the dead combustible load in Chinese fir forest is a major risk to forest fires. The results showed that the burned land reclamation, other fires, smelting and afforestation, and outdoor smoking were the four main sources of fire which caused the forest fire, accounting for 74.9% of the total number of forest fires that have been identified as fire sources %.