title: Impact of elevated CO2 and O3 concentrations on biogenic volatile organic compounds emissions from Ginkgo biloba.
abstract: 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.
authors.affiliation: Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, People's Republic of China.
authors.forename: Dewen
authors.initials: D
authors.lastname: Li
authors.forename: Ying
authors.initials: Y
authors.lastname: Chen
authors.forename: Yi
authors.initials: Y
authors.lastname: Shi
authors.forename: Xingyuan
authors.initials: X
authors.lastname: He
authors.forename: Xin
authors.initials: X
authors.lastname: Chen
mesh_terms: D000388:Air / Q000032:analysis; D000393:Air Pollutants / Q000032:analysis / Q000378:metabolism*; D000081008:Bicyclic Monoterpenes; D002070:Butadienes / Q000378:metabolism; D002245:Carbon Dioxide / Q000494:pharmacology*; D053138:Cyclohexenes / Q000378:metabolism; D020441:Ginkgo biloba / Q000187:drug effects / Q000378:metabolism*; D045782:Hemiterpenes / Q000378:metabolism; D000077222:Limonene; D039821:Monoterpenes / Q000378:metabolism; D010126:Ozone / Q000494:pharmacology*; D010420:Pentanes / Q000378:metabolism; D010788:Photosynthesis / Q000187:drug effects / Q000502:physiology; D013729:Terpenes / Q000378:metabolism; D055549:Volatile Organic Compounds / Q000032:analysis / Q000378:metabolism*
chemical_list: D000393:Air Pollutants; D000081008:Bicyclic Monoterpenes; D002070:Butadienes; D053138:Cyclohexenes; D045782:Hemiterpenes; D039821:Monoterpenes; D010420:Pentanes; D013729:Terpenes; D055549:Volatile Organic Compounds; C005059:isoprene; D002245:Carbon Dioxide; D010126:Ozone; D000077222:Limonene; C005451:alpha-pinene