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研究利用锥形量热仪,对浙江省4种常见常绿阔叶树种,冬青(Ilex chinensis)、木荷(Schima superba)、甜槠(Castanopsis eyrei)和紫楠(Phoebe sheareri)的枯落物进行燃烧性试验。结果表明:木荷落叶的热释放速率,总热释放量、烟产生速率、总烟释放量均比较低,火灾性能指数最大,其小枝的火灾性能指数也相对较大,表现出较强的阻火性能,因而木荷枯落物具有较强的防火性能;甜槠落叶的总热释放量较大,火灾性能指数最小,燃烧性最强,但其小枝却相反;而紫楠落叶释烟、释热均比较缓慢,火灾性能指数较大,其小枝的火灾性能指数却最小,可见紫楠落叶耐火,小枝易燃。该研究可为浙江省防火树种筛选以及防火林带的建设提供参考。
In this study, the cone litter calorimeter was used to study the litter of four common evergreen broad-leaved species, Ilex chinensis, Schima superba, Castanopsis eyrei and Phoebe sheareri in Zhejiang Province. Flammability test. The results showed that: the heat release rate, the total heat release rate, the smoke generation rate and the total smoke release rate of the deciduous trees were relatively low, the fire performance index was the highest, and the fire performance index of the twigs was relatively large, showing strong resistance Fire performance, so the woody litter has a strong fire performance; sweet 槠 deciduous leaves greater heat release, fire performance index minimum, the strongest combustion, but the twigs but the opposite; The release of heat is relatively slow, the larger the fire performance index, the fire performance index of its branchlets is the smallest, showing that firewood leaves defoliation, branchlets flammable. The study can provide a reference for screening fire tree species in Zhejiang Province and building fire-proof forest belt.