二氧化碳和臭氧浓度升高对银杏生物源挥发性有机化合物排放的影响。
Impact of elevated CO2 and O3 concentrations on biogenic volatile organic compounds emissions from Ginkgo biloba.
作者信息
Li Dewen, Chen Ying, Shi Yi, He Xingyuan, Chen Xin
机构信息
Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, People's Republic of China.
出版信息
Bull Environ Contam Toxicol. 2009 Apr;82(4):473-7. doi: 10.1007/s00128-008-9590-7. Epub 2008 Oct 31.
In natural environment with ambient air, ginkgo trees emitted volatile organic compounds 0.18 microg g(-1) h(-1) in July, and 0.92 microg g(-1) h(-1) in September. Isoprene and limonene were the most abundant detected compounds. In September, alpha-pinene accounted for 22.5% of the total. Elevated CO(2) concentration in OTCs increased isoprene emission significantly in July (p<0.05) and September (p<0.05), while the total monoterpenes emission was enhanced in July and decreased in September by elevated CO(2). Exposed to elevated O(3) increased the isoprene and monoterpenes emissions in July and September, and the total volatile organic compounds emission rates were 0.48 microg g(-1) h(-1) (in July) and 2.24 microg g(-1) h(-1) (in September), respectively. The combination of elevated CO(2) and O(3) did not have any effect on biogenic volatile organic compounds emissions, except increases of isoprene and Delta3-carene in September.
在有环境空气的自然环境中，银杏树在7月排放挥发性有机化合物的速率为0.18微克/克·小时，9月为0.92微克/克·小时。异戊二烯和柠檬烯是检测到的最主要化合物。9月，α-蒎烯占总量的22.5%。OTC（开顶式气室）中二氧化碳浓度升高，7月（p<0.05）和9月（p<0.05）异戊二烯排放量显著增加，而7月单萜类化合物总排放量因二氧化碳浓度升高而增加，9月则减少。暴露于高浓度臭氧中，7月和9月异戊二烯和单萜类化合物排放量增加，挥发性有机化合物总排放速率分别为0.48微克/克·小时（7月）和2.24微克/克·小时（9月）。除9月异戊二烯和Δ3-蒈烯增加外，二氧化碳和臭氧浓度升高的组合对生物源挥发性有机化合物排放没有任何影响。
Zotero 插件