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Auxiliary material for
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One year of continuous measurements of soil CH4 and CO2 fluxes in a Japanese cypress forest:
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temporal and spatial variations associated with Asian monsoon rainfall
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Ayaka Sakabe
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(Laboratory of Forest Hydrology, Graduate School of Agriculture, Kyoto University, Kitashirakawa
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Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan)
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Yoshiko Kosugi
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(Laboratory of Forest Hydrology, Graduate School of Agriculture, Kyoto University, Kitashirakawa
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Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan)
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Kenshi Takahashi
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(Research Institute for Sustainable Humanosphere, Kyoto University, Gokasho, Uji , 611-0011, Japan)
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Masayuki Itoh
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(Center for Southeast Asian Studies, Kyoto University, 46 Shimoadachi-cho, Yoshida, Sakyo-ku,
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Kyoto 606-8501, Japan)
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Akito Kanazawa
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(Laboratory of Forest Hydrology, Graduate School of Agriculture, Kyoto University, Kitashirakawa
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Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan)
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(Kyoto Prefecture, Yabunouchi-cho, Nishiiru, Shimodachiuri-dori, Kamigyo-ku, Kyoto 602-8570,
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Japan)
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Naoki Makita
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(Laboratory of Forest Hydrology, Graduate School of Agriculture, Kyoto University, Kitashirakawa
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Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan)
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(Kansai Research Center, Forestry and Forest Products Research Institute, Momoyama-cho, Fushimi-
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ku, Kyoto 612-0855, Japan)
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Mioko Ataka
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(Laboratory of Forest Hydrology, Graduate School of Agriculture, Kyoto University, Kitashirakawa
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Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan)
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Journal of Geophysical Research-Biogeosciences 2014
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Introduction
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The figure “fs01” shows variations in half-hourly precipitation, water filled pore space
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(WFPS), and CH4 absorption flux during and after rainfall. (a) 14.8 mm precipitation from
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October 2, 2010 and response of WFPSs to the precipitation, (b) responses of CH4
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absorption flux to the precipitation in plot B, and (c) plot C are shown.
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
Information about artifact mitigation of CH4 absorption fluxes in the driest period
shown in Figure 6c and d.
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Although our soil reflectometer (CS616, Campbell) did not respond to light rainfall,

but CH4 absorption was weakened by rainfall.
precipitation
-1
(mm 30min )
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0
4
6
-2
-1
(nmol m s )
CH4 absorption flux
(b) Plot B
precipitation
WFPS (Plot B)
WFPS (Plot C)
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3
2
1
(c) Plot C
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-2
-1
(nmol m s )
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0
-1
-2
10/1
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25
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15
10
5
2
5
CH4 absorption flux
(a)
WFPS (% )
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10/2
10/3
10/4
10/5
2009
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Variations in half-hourly precipitation, water filled pore space (WFPS), and CH4
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absorption flux during and after rainfall. (a) 14.8 mm precipitation from October 2, 2010
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and response of WFPSs to the precipitation in plots B and C, (b) responses of CH4
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absorption flux to the precipitation in plot B, and (c) plot C are shown.