亚热带11种常见竹种春季挥发性有机物排放清单及异戊二烯排放通量  

Biogenic volatile organic compounds(VOCs)emission inventory and isoprene emission flux in spring of 11 common subtropical bamboo species

作　　者：王超[1,2,3] 杨滨锴 李丽 崔博文[4] 王福升 王效科[4] WANG Chao;YANG Binkai;LI Li;CUI Bowen;WANG Fusheng;WANG Xiaoke(Collaborative Innovation Center of Nanjing Forestry University,Nanjng 210037,China;Institute of Bamboo,Nanjing Forestry University,Nanjing 210037,China;School of Biology and Environment,Nanjing Forestry University,Nanjing 210037,China;Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China)

机构地区：[1]南京林业大学南方现代林业协同创新中心,南京210037 [2]南京林业大学竹类研究所,南京210037 [3]南京林业大学生物与环境学院,南京210037 [4]中国科学院生态环境研究中心,北京100085

出　　处：《生态学杂志》2024年第8期2403-2413,共11页Chinese Journal of Ecology

基　　金：国家自然科学基金面上项目(32171586);中国科学院城市与区域国家重点实验室开放基金(SKLURE2021-2-3);江苏省教育厅江苏省高校“青蓝工程”优秀青年骨干教师培养计划(苏教师函[2022]29号)资助。

摘　　要：为了解竹子挥发性有机物(VOCs)的排放,利用动态顶空箱式法采集亚热带毛竹(Phyllostachys heterocycla cv. pubescens)、凤尾竹(Bambusa multiplex cv. Fernleaf)、菲白竹(Pleioblastus fortunei)、红秆寒竹(Chimonobambusa marmorea f. variegata)、刺黑竹(Chimonobambusa purpurea)、茶秆竹(Pseudosasa amabilis)、孝顺竹(Bambusa multiplex)、筇竹(Chimonobambusa tumidissinoda)、长叶苦竹(Pleioblastus china f. hisauchii)、少穗竹(Oligostachyum sulcatum)和金镶玉竹(Phyllostachys aureosulcata ‘Spectabilis’)共11种常见竹种排放的VOCs,对VOCs的物质组成、各物质的相对含量、所含的污染气体、有益成分以及异戊二烯(ISO)排放通量进行了分析,并比较了不同竹子高度(大、中、小型)对ISO排放的影响。结果表明:11种竹子共排放8大类VOCs,包括烃类、醇类、酮类、酸类、酯类、醛类、醚类和其他VOCs;从VOCs总数来看,11种竹子共排放VOCs 339种,其中茶秆竹排放种类最多(48种),凤尾竹排放种类最少(11种);11种竹子均未检测出单萜烯、倍半萜烯,其中7种竹子排放萜烯类物质,物质组成均为ISO;11种竹子VOCs排放中有6种有益VOCs和16种大气污染物,其中茶秆竹排放的污染物数量最多,而毛竹排放的大气污染物相对含量最大;7种产生ISO排放的竹子的ISO标准化排放速率为0.16~7.75 μg·g^(-1)·h^(-1),其中毛竹排放速率最高,为7.75 μg·g^(-1)·h^(-1),显著高于其他6种竹子,长叶苦竹最低(0.16 μg·g^(-1)·h^(-1));与中、小型竹相比,大型竹排放更多的ISO,约为中型竹的6倍,小型竹的19倍。We examined the emission of volatile organic compounds(VOCs)of 1l common subtropical bamboo species by using a dynamic headspace sampling technique.Except for Bambusa multiplex cv.Fernleaf and Phyl-lostachys heterocycla cv.pubescens,the other nine species were all reported for the first time.The VOCs composi-tion,relative contents,the pollution gases contained,and emission rates of isoprene(ISO)were analyzed.Given that the height of bamboo species would affect ISO emission,all bamboo species were divided as large,medium,and small groups and their ISO emission differences were also analyzed.The results showed that the compounds emitted from the 1l bamboo species could be classified into eight types,including hydrocarbons,alcohols,ketones,acids,esters,aldehydes,ethers,and other VOCs.In terms of total number of detailed compounds,11 bamboo species emitted 339 kinds of compounds.Pseudosasa amabilis emitted the most diverse compounds(48 kinds),while Bambusa multiplex cv.Fernleaf emitted the least(11 kinds).No monoterpenes or sesquiterpenes were detected in 11 bamboo species.Seven bamboo species all emitted terpenes,all of which were composed of ISO.The VOCs components of 11 bamboo species contained six kinds of VOCs beneficial to human health and 16 kinds of air pollutants,among which Pseudosasa amabilis emitted the most kinds of pollutants and Phyllostachys heterocycla cv.pubescens emitted the largest relative contents.The ISO emission rates of the seven ISO-emitted bamboo species ranged from 0.16 to 7.75μg·g^(-1)·h^(-1).Phyllostachys heterocycla cv.pubescens had the highest ISO emission rates(7.75μg·g^(-1)·h^(-1)),and the lowest was Pleioblastus china f.hisauchi(0.16μg·g^(-1)·h^(-1)).Large bamboo species emitted more ISO than middle and small bamboo species,which was about six times of medium bamboo and 19 times of small bamboo.

关 键 词：竹子 挥发性有机物(VOCs) 物质组成 异戊二烯 排放速率 

分 类 号：S795[农业科学—林木遗传育种]