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Seasonal variation in biogenic volatile organic compound (BVOC) emissions from Norway spruce in a Swedish boreal forest

Wang, Min LU ; Schurgers, Guy LU ; Arneth, Almut LU ; Ekberg, Anna LU and Holst, Thomas LU (2017) In Boreal Environment Research 22. p.353-367
Abstract

Terpene emissions from the top-canopy layer (at 20 m) of one 118-year-old Norway spruce tree were measured between June and September 2013 using a branch chamber. Total terpene emissions varied from 0.05 to 332.5 μg gdw -1 h-1 with a peak in August. Monoterpenes dominated throughout the summer and on average accounted for 65% of the total terpene mass, followed by sesquiterpenes (29%) and isoprene (6%). The values obtained with an optimized hybrid model, assuming the partitioning of monoterpene emissions from both de novo synthesis and storage structures, were in good agreement with the observed emissions (Pearson’s r = 0.94) at the branch level. De novo monoterpene emissions were found to dominate in... (More)

Terpene emissions from the top-canopy layer (at 20 m) of one 118-year-old Norway spruce tree were measured between June and September 2013 using a branch chamber. Total terpene emissions varied from 0.05 to 332.5 μg gdw -1 h-1 with a peak in August. Monoterpenes dominated throughout the summer and on average accounted for 65% of the total terpene mass, followed by sesquiterpenes (29%) and isoprene (6%). The values obtained with an optimized hybrid model, assuming the partitioning of monoterpene emissions from both de novo synthesis and storage structures, were in good agreement with the observed emissions (Pearson’s r = 0.94) at the branch level. De novo monoterpene emissions were found to dominate in all campaigns (> 50%) with almost 100% in June. The highest standardized (30 °C, 1000 μmol photons m-2 s-1) monoterpene emission rate was 210.3 μg gdw -1 h-1 in August, followed by that in June (68.8 μg gdw -1 h-1). Therefore, both de-novo-synthesis and long-term observations that include seasonal variations are needed for accurately upscaling terpene emissions.

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organization
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type
Contribution to journal
publication status
published
subject
in
Boreal Environment Research
volume
22
pages
15 pages
publisher
Finnish Zoological and Botanical Publishing Board
external identifiers
  • scopus:85029643330
ISSN
1239-6095
language
English
LU publication?
yes
id
732f2451-82ba-4019-b971-2eb723c3de2e
alternative location
http://www.borenv.net/BER/pdfs/ber22/ber22-353-367.pdf
date added to LUP
2017-10-04 11:29:56
date last changed
2018-01-07 12:20:36
@article{732f2451-82ba-4019-b971-2eb723c3de2e,
  abstract     = {<p>Terpene emissions from the top-canopy layer (at 20 m) of one 118-year-old Norway spruce tree were measured between June and September 2013 using a branch chamber. Total terpene emissions varied from 0.05 to 332.5 μg g<sub>dw</sub> <sup>-1</sup> h<sup>-1</sup> with a peak in August. Monoterpenes dominated throughout the summer and on average accounted for 65% of the total terpene mass, followed by sesquiterpenes (29%) and isoprene (6%). The values obtained with an optimized hybrid model, assuming the partitioning of monoterpene emissions from both de novo synthesis and storage structures, were in good agreement with the observed emissions (Pearson’s r = 0.94) at the branch level. De novo monoterpene emissions were found to dominate in all campaigns (&gt; 50%) with almost 100% in June. The highest standardized (30 °C, 1000 μmol photons m<sup>-2</sup> s<sup>-1</sup>) monoterpene emission rate was 210.3 μg g<sub>dw</sub> <sup>-1</sup> h<sup>-1</sup> in August, followed by that in June (68.8 μg g<sub>dw</sub> <sup>-1</sup> h<sup>-1</sup>). Therefore, both de-novo-synthesis and long-term observations that include seasonal variations are needed for accurately upscaling terpene emissions.</p>},
  author       = {Wang, Min and Schurgers, Guy and Arneth, Almut and Ekberg, Anna and Holst, Thomas},
  issn         = {1239-6095},
  language     = {eng},
  pages        = {353--367},
  publisher    = {Finnish Zoological and Botanical Publishing Board},
  series       = {Boreal Environment Research},
  title        = {Seasonal variation in biogenic volatile organic compound (BVOC) emissions from Norway spruce in a Swedish boreal forest},
  volume       = {22},
  year         = {2017},
}