摘要
为了摸清树种挥发性有机物(Volatile Organic Compounds,VOCs)的释放规律和种类,采用顶空法提取马尾松(Pinus massoniana)、杉木(Cunninghamia lanceolata)纯林及其混交林11个树种叶片的VOCs,并用气相色谱质谱联用仪(GC MS)技术对其进行分析。结果表明:前15 min,VOCs检出率为100%的树种有马尾松混交林和杉木混交林中的格木(Erythrophleum fordii)、红锥(Castanopsis hystrix)、大叶栎(Quercus griffithii);检出率为73%-90%的树种有马尾松纯林及其混交林中的马尾松、黄毛榕(Ficus esquiroliana)和香梓楠(Michelia hedyosperma),以及杉木纯林及其混交林中的杉木和灰木莲(Manglietia glauca)。马尾松纯林及其混交林中鉴定出的VOCs种类有萜、醇、醛、酮、酯、酸、脂肪胺、环氧等8大类,除了红锥和大叶栎外,其他树种均以萜类化合物数量最多;杉木纯林及其混交林鉴定出的VOCs种类有萜、醇、醛、酮、酯、酸、脂肪胺、苯、硫醚和环氧等10大类,杉木纯林及其混交林中的灰木莲以萜类化合物最多,混交林中的格木、大叶栎以醛类最多,混交林中的红锥以醇类最多。上述结果说明格木、红锥和大叶栎的VOCs较其他树种挥发速度快,而灰木莲和香梓楠的VOCs挥发速度较其他树种慢。纯林VOCs种类较混交林少,两个树种的纯林及其混交林中检测出的VOCs有7大类与森林康养有关。
In order to find out the release rules and types of Volatile Organic Compounds(VOCs)from tree species,VOCs in the leaves of 11 tree species in Pinus massoniana,Cunninghamia lanceolata and their mixed forests were extracted by headspace method and analyzed by gas chromatography mass spectrometry(GC MS).The results showed that in the first 15 min,VOCs was detected with a rate of 100%in Erythrophleum fordii,Castanopsis hystrix and Quercus griffithii from mixed forest of P.massoniana and mixed forest of C.lanceolata.VOCs was detected with a rate of 73%-90%in P.massoniana,Ficus esquiroliana and Michelia hedyosperma from the pure and mixed forest of P.massoniana,as well as in C.lanceolata and Manglietia glauca from the pure and mixed forest of C.lanceolata.Terpenoids,alcohols,aldehydes,ketones,esters,acids,aliphatic amines and epoxides were detected in the pure and mixed forests of P.massoniana.Terpenoids was mostly detected in those 9 tree species,except C.hystrix and Q.griffithii.Terpenoids,alcohols,aldehydes,ketones,esters,acids,aliphatic amines,benzene,thioethers and epoxides were detected in the pure and mixed forests of C.lanceolata,and terpenoids counted most in M.glauca.In mixed forests of C.lanceolata,aldehydes counted most in E.fordii and Q.griffithii,while alcohols counted most in C.hystrix.The results indicated that the VOCs volatilization of E.fordii,C.hystrix and Q.griffithii were faster than that of the other tree species,while the VOCs volatilization of M.glauca and M.hedyosperma were slower than that of other tree species.The types of VOCs in pure forests are less than those in mixed forests.Seven categories of VOCs detected in pure forests and their mixed forests are related to forest health.
作者
文娟
常明山
郝建
杨保国
赵鹏飞
吴耀军
WEN Juan;CHANG Mingshan;HAO Jian;YANG Baoguo;ZHAO Pengfei;WU Yaojun(Guangxi Zhuang Autonomous Region Forest Resources and Environment Monitoring Center,Nanning,Guangxi,530028,China;Guangxi Engineering Research Center of Natural Enemy Breeding of Forestry Pests,Guangxi Zhuang Autonomous Region Forestry Research Institute,Nanning,Guangxi,530002,China;Experimental Center of Tropical Forestry,Chinese Academy of Forestry,Pingxiang,Guangxi,532600,China)
出处
《广西科学》
CAS
北大核心
2023年第2期251-258,共8页
Guangxi Sciences
基金
广西林业科技推广示范项目(桂林科研[2022]第5号)资助。
关键词
马尾松
杉木
纯林
混交林
挥发性有机物
成分分析
Pinus massoniana
Cunninghamia lanceolata
pure forest
mixed forest
Volatile Organic Compounds(VOCs)
composition analysis
