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Determination of de novo and pool emissions of terpenes from four common boreal/alpine trees by 13 CO 2 labelling and PTR‐MS analysis
Author(s) -
GHIRARDO ANDREA,
KOCH KRISTINE,
TAIPALE RISTO,
ZIMMER INA,
SCHNITZLER JÖRGPETER,
RINNE JANNE
Publication year - 2010
Publication title -
plant, cell and environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.646
H-Index - 200
eISSN - 1365-3040
pISSN - 0140-7791
DOI - 10.1111/j.1365-3040.2009.02104.x
Subject(s) - monoterpene , scots pine , taiga , picea abies , betula pendula , chemistry , boreal , fumigation , botany , environmental science , larch , atmospheric sciences , pinus <genus> , ecology , biology , physics
Boreal forests emit a large amount of monoterpenes into the atmosphere. Traditionally these emissions are assumed to originate as evaporation from large storage pools. Thus, their diurnal cycle would depend mostly on temperature. However, there is indication that a significant part of the monoterpene emission would originate directly from de novo synthesis. By applying 13 CO 2 fumigation and analyzing the isotope fractions with proton transfer reaction mass spectrometry (PTR‐MS) and classical GC‐MS, we determined the fractions of monoterpene emissions originating from de novo biosynthesis in Pinus sylvestris (58%), Picea abies (33.5%), Larix decidua (9.8%) and Betula pendula (100%). Application of the observed split between de novo and pool emissions from P. sylvestris in a hybrid emission algorithm resulted in a better description of ecosystem scale monoterpene emissions from a boreal Scots pine forest stand.