Emission patterns of biogenic volatile organic compounds from dominant forest species in Beijing, China

作     者：Xiaoxi Jing Xiaoxiu Lun Chong Fan Weifang Ma Xiaoxi Jing;Xiaoxiu Lun;Chong Fan;Weifang Ma

作者机构：College of Environmental Science and Engineering Beijing Forestry University Beijing 100083 China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2020年第32卷第9期

页      面：73-81页

核心收录：

学科分类：07[理学] 070602[理学-大气物理学与大气环境] 09[农学] 0903[农学-农业资源与环境] 0706[理学-大气科学] 0713[理学-生态学] 

基　　金：supported by the grants from Beijing Municipal Science and Technology Project(Nos.Z181100005318003 and Z181100005418015) the National Research Program for Key Issues in Air Pollution Control(No.DQGG0201) the National Natural Science Foundation of China(Nos.21976190 and 41575121) 

主　　题：pollution volatile forest 

摘      要：Biogenic volatile organic compounds(BVOC s) have significant effects on atmospheric chemistry,ozone formation and secondary organic aerosol *** few investigations about BOVCs emissions in north China where is facing serious air pollution in recent years,emissions of various BVOCs from 24 dominant forest species in Beijing were measured from June to September in 2018,using a dynamic headspace sampling *** than one hundred BVOCs in the collected samples were identified by using an automatic thermal desorption-gas chromatography/mass spectrometry,and their emission rates based on leaf biomass were *** and monoterpenes were verified to be the dominant BVOCs emitted from the tree species,accounting for more than 50% of the total ***,broad-leaved species displayed high isoprene emission rates,especially the Platanus occidentalis(21.36μg/(g·hr)),Robinia pseudoacacia(11.55μg/(g·hr)),and Lonicera maackii(9.17μg/(g·hr)),while coniferous species emitted high rates of monoterpenes,such as Platycladus orientalis(27.18μg/(g·hr)),Pinus griffithii(23.11μg/(g·hr)),and Pinus armandii(7.42μg/(g·hr)).High emission rates of monoterpenes from the broad-leaved species of Buxus megistophylla(13.07μg/(g·hr)) and Ligustrum uicaryi(5.74μg/(g·hr)),and high isoprene emission rate from the coniferous tree of Taxus cuspidata(5.86μg/(g·hr)) were also *** emission rates of sesquiterpenes from each tree were usually 10-100 times smaller than those of isoprene and ***,relatively high emission rates of oxygenated volatile organic compounds and other alkenes than isoprene and monoterpenes were also found for several tree species.