Downloads: 289

Files in This Item:
File Description SizeFormat 
s00704-011-0564-z.pdf718.57 kBAdobe PDFView/Open
Title: Measurement of methane flux over an evergreen coniferous forest canopy using a relaxed eddy accumulation system with tuneable diode laser spectroscopy detection
Authors: Sakabe, Ayaka  kyouindb  KAKEN_id
Hamotani, Ken
Kosugi, Yoshiko  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-0256-8404 (unconfirmed)
Ueyama, Masahito
Takahashi, Kenshi  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-5905-2708 (unconfirmed)
Kanazawa, Akito
Itoh, Masayuki  kyouindb  KAKEN_id
Author's alias: 坂部, 綾香
Issue Date: Jul-2012
Publisher: Springer-Verlag
Journal title: Theoretical and Applied Climatology
Volume: 109
Issue: 1-2
Start page: 39
End page: 49
Abstract: Very few studies have conducted long-term observations of methane (CH4) flux over forest canopies. In this study, we continuously measured CH4 fluxes over an evergreen coniferous (Japanese cypress) forest canopy throughout 1 year, using a micrometeorological relaxed eddy accumulation (REA) system with tuneable diode laser spectroscopy (TDLS) detection. The Japanese cypress forest, which is a common forest type in warm-temperate Asian monsoon regions with a wet summer, switched seasonally between a sink and source of CH4 probably because of competition by methanogens and methanotrophs, which are both influenced by soil conditions (e.g., soil temperature and soil moisture). At hourly to daily timescales, the CH4 fluxes were sensitive to rainfall, probably because CH4 emission increased and/or absorption decreased during and after rainfall. The observed canopy-scale fluxes showed complex behaviours beyond those expected from previous plot-scale measurements and the CH4 fluxes changed from sink to source and vice versa.
Rights: The final publication is available at www.springerlink.com
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
URI: http://hdl.handle.net/2433/157358
DOI(Published Version): 10.1007/s00704-011-0564-z
Appears in Collections:Journal Articles

Show full item record

Export to RefWorks


Export Format: 


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.