Abstract
| Original language | English |
|---|---|
| Journal | Biogeochemistry |
| Volume | 106 |
| Issue number | 3 |
| Pages (from-to) | 337-355 |
| ISSN | 0168-2563 |
| DOIs | |
| Publication status | Published - 2011 |
Keywords
- Bio systems
- Environment and climate
Cite this
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Methanol and other VOC fluxes from a Danish beech forest during late springtime. / Schade, Gunnar W.; Solomon, Sheena J.; Dellwik, Ebba; Pilegaard, Kim; Ladstätter-Weissenmayer, Annette.
In: Biogeochemistry, Vol. 106, No. 3, 2011, p. 337-355.Research output: Contribution to journal › Journal article › Research › peer-review
TY - JOUR
T1 - Methanol and other VOC fluxes from a Danish beech forest during late springtime
AU - Schade, Gunnar W.
AU - Solomon, Sheena J.
AU - Dellwik, Ebba
AU - Pilegaard, Kim
AU - Ladstätter-Weissenmayer, Annette
PY - 2011
Y1 - 2011
N2 - In-canopy mixing ratio gradients and above-canopy fluxes of several volatile organic compounds (VOCs) were measured using a commercial proton transfer reaction mass spectrometer (PTR-MS) in a European beech (Fagus sylvatica) forest in Denmark. Fluxes of methanol were bidirectional: Emission occurred during both day and night with highest fluxes (0.2 mg C m−2 h−1) during a warm period; deposition occurred dominantly at daytime. Confirming previous branch-level measurements on beech, the forest’s monoterpene emissions (0–0.5 mg C m−2 h−1), and in-canopy mixing ratios showed a diurnal cycle consistent with light-dependent emissions; a result contrasting temperature-only driven emissions of most conifer species. Also emitted was acetone, but only at ambient temperatures exceeding 20°C. Slow deposition dominated at lower temperatures. Our in-canopy gradient measurements contrast with earlier results from tropical and pine forest ecosystems in that they did not show this beech ecosystem to be a strong sink for oxygenated VOCs (OVOCs). Instead, their gradients were flat and only small deposition velocities (
AB - In-canopy mixing ratio gradients and above-canopy fluxes of several volatile organic compounds (VOCs) were measured using a commercial proton transfer reaction mass spectrometer (PTR-MS) in a European beech (Fagus sylvatica) forest in Denmark. Fluxes of methanol were bidirectional: Emission occurred during both day and night with highest fluxes (0.2 mg C m−2 h−1) during a warm period; deposition occurred dominantly at daytime. Confirming previous branch-level measurements on beech, the forest’s monoterpene emissions (0–0.5 mg C m−2 h−1), and in-canopy mixing ratios showed a diurnal cycle consistent with light-dependent emissions; a result contrasting temperature-only driven emissions of most conifer species. Also emitted was acetone, but only at ambient temperatures exceeding 20°C. Slow deposition dominated at lower temperatures. Our in-canopy gradient measurements contrast with earlier results from tropical and pine forest ecosystems in that they did not show this beech ecosystem to be a strong sink for oxygenated VOCs (OVOCs). Instead, their gradients were flat and only small deposition velocities (
KW - Bio systems
KW - Environment and climate
KW - Miljø og klima
KW - Biosystemer
U2 - 10.1007/s10533-010-9515-5
DO - 10.1007/s10533-010-9515-5
M3 - Journal article
VL - 106
SP - 337
EP - 355
JO - Biogeochemistry
JF - Biogeochemistry
SN - 0168-2563
IS - 3
ER -