中文摘要：

研究被进行探索机制从激烈的针和枝条的不稳定的有机化合物(VOC ) 的排出物(从 C 的 CPT 的 200ultrasound-assisted 抽取(UAE ) 。有碱的答案的 acuminata 种子被调查， CPT 产量被高效液体层析决定。碱的种类和集中，抽取时间，抽取温度和超声的力量的条件被优化。结果显示出那而 Na3PO4 答案有更强壮的盐基度， Na3PO4 和 Na2CO3 答案获得好抽取收益并且比 Na2CO3 答案做的需要更高的集中，这样水的 Na2CO3 为抽取是更有益的。最佳的条件超声地在 50 晩捩湡 ? 潣牲汥瑡潩 ? 敢睴敥 ? 潣据湥牴瑡潩獮漠 ? 敓愠摮漠桴牥洠慥?敲 ? 業牣敯敬敭瑮 ? 慷 ? 敤整瑣摥椠 ? 桴 ? 与 0.5% 水的 Na2CO3 被提取敬癡獥漠吗？？

英文摘要：

A study was conducted to explore the mechanism that emissions of volatile organic compounds（VOC） from heated needles and twigs（200°C,within 15 min） of Pinus pumila affect fire behaviours using the technology of Thermal Desorption-Gas Chromatography-Mass Spectrometry（TD-GC-MS）.The results indicated that the main components of VOC from heated needles and twigs are terpenoids.Most of these terpenoids are monoterpenes.Terpenoids account for 72.93% for the needles and 92.40% for the twigs of the total VOC,and their emission ratios are 61.200 μg·g-1 and 217.060 μg·g-1 respectively.Heated twigs can emit more terpenoids than heated needles because twigs had more volatile oils than needles.In actual fires,these large amounts of terpenoid emissions,especially the monoterpene emissions,have strong effects on fire behaviors that are not only in the initial stage but also in the fast propagation stage of fires.These flammable gases are capable of causing violent combustion and creating crown fires.In addition,if these gases accumulate in an uneven geographical area,there will be a possible for eruptive fires and/or fires flashover to occur.