【摘要】 经对油松易燃物鲜样燃烧性测定，模拟点火试验和破坏性试验研究，以及对人工油松中幼龄纯林的结构调查，结果表明，油松中、幼龄纯林毁灭性火灾的形成有直接致灾型和间接致灾型两种，共５条致灾途径；油松中幼龄纯林致灾的可燃物分布结构有集约经营型和粗放经营型两个类型，共３种结构模式。更多还原

【Abstract】 Combustibilities of fresh fine fuels were measured and experiments of imitable fire setting and damage as well as structures about artificial young and middle aged Chinese pine forest ( Pinus tabulaeformis Carr.)were studied and investigated.The results showed that: there were two types of destructive catastrophy causing (direct catastrophy causing and indirect one) and five ways of fire catastrophy-causings in pure Chinese pine forest;there were two forms of forest fuels distribution structures (intensive management form and extensive management one) and three structure models in Chinese pine forest.更多还原