BBY: Bibai bog
General site details
| Site name | Bibai bog |
|---|---|
| AsiaFlux site code | BBY |
| Location | Bibai, Hokkaido, Japan |
| Position | 43°19' 22.82"N, 141°48'38.51"E |
| Elevation | 17 m |
| Slope | 0 degree |
| Terrain type | Flat |
| Area | 22 ha |
| Fetch | Wetland dominated by Sphagnum moss : 60 m for north, 40 m for south, 100 m for west, and 50 m for east Wetland including Sasa : 270 m for north, 220 m for south, 200 m for west, and 330 m for east |
| Climate | Cool temperate (Dfb) |
| Mean annual air temperature | 7.2 ± 0.6 ºC |
| Mean annual precipitation | 1170 ± 181 mm |
| Vegetation type | Wetland dominated by Sphagnum moss |
| Dominant Species (Overstory) | Sphagnum moss, Rhynchospora fauriei, Rhynchospora alba, Moliniopsis japonica, Aster rugulosus, Lobelia sessilifolia, Sasa palmate, Toxicodendron trichocarpum |
| Dominant Species (Understory) | - |
| Canopy height | 30 to 50 cm |
| Age | 2000 years |
| LAI | Maximum ap 2 |
| Soil type | 4 to 5 m peat on the alluvial plain |
Observation
Eddy Covariance method (CO2)
| System | Open-path eddy covariance |
|---|---|
| Wind speed | Sonic anemometer (CSAT3, Campbell Scientific Inc.) |
| Air temperature | Sonic anemometer (CSAT3, Campbell Scientific Inc.) |
| Water vapor | Open-path CO2/H2O analyzer (EC150, Campbell Scientific Inc.) |
| CO2 | Open-path CO2/H2O analyzer (EC150, Campbell Scientific Inc.) |
| Measurement height | 2.3 m |
| Sampling frequency | 10 Hz |
| Averaging time | 30 min |
| Data logger | CR6 (Campbell Scientific Inc.) |
| Data storage | microSD card |
| Original data | Raw data |
Meteorology
| Observation items | Levels/Depth | Instrument |
|---|---|---|
| Global solar radiation(incoming) | 1.9 m | 4 component net radiometer (CNR1, Campbell Scientific Inc.) |
| Global solar radiation(outgoing) | 1.9 m | 4 component net radiometer (CNR1, Campbell Scientific Inc.) |
| Long-wave radiation(incoming) | 1.9 m | 4 component net radiometer (CNR1, Campbell Scientific Inc.) |
| Long-wave radiation(outgoing) | 1.9 m | 4 component net radiometer (CNR1, Campbell Scientific Inc.) |
| Net radiation | - | |
| PPFD (incoming) | 1.93 m | Quantum sensor (CPR-PAR-01, Climatec) Quantum sensor (SE-SQ110, Apogee, USA) |
| PPFD (outgoing) | 1.93 m | Quantum sensor (SE-SQ110, Apogee, USA) |
| Direct / diffuse radiation | - | |
| Direct / diffuse PPFD | - | |
| Air temperature | 1.95 and 1.63 m | Platinum resistance thermometer and capacitive (HMP155, Vaisala) |
| Humidity | 1.95 and 1.63 m | Platinum resistance thermometer and capacitive (HMP155, Vaisala) |
| Soil temperature | 0.5, 5.5, 10.5, 20.5, and 30.5 cm 15, 20, 25, 35, and 45 cm |
Thermocouples |
| Soil heat flux | 0.1 m | Heat flux plate (HEP01SC, Hukseflux) |
| Soil water content | 0.05 m | TDR sensor (CS616 Campbell Scientific Inc.) |
| Wind speed | 2.3 m 4.04 m 2.0 m |
Sonic anemometer (CSAT3, Campbell Scientific) Aerovane (5103, Young) Three cup anemometer (010C, MetOne) |
| Wind direction | 2.3 m 4.04 m |
Sonic anemometer (CSAT3, Campbell Scientific) Aerovane (5103, Young) |
| Barometric pressure | 2.3 m 4.04 m 2.0 m |
Barometer (EC150, Campbell Scientific Inc.) Barometer (LI-7700, Li-Cor) Barometer (PTB210, Vaisala) |
| Precipitation | 2.2 m | Tipping-bucket rainguage (52,202, R.M.Young) |
| CO2 concentration | 2.3 m | Open-path CO2/H2O analyzer (EC150, Campbell Scientific Inc.) |
| CH4 concentratio | 2.3 m | Open-path CH4 analyzer (LI-7700, Li-Cor) |
| Water Table depth | Pressure water gauge (HTV010-KP, SENSEZ) | |
| Soil O2 concentration | 0.05, 0.1 and 0.3 m | Galvanic-cell type oxygen sensor (KE-25, GS- Yuasa), Galvanic-cell type oxygen sensor (MIJ-03 type2, Environmental Measurements Japan) |
| Snow Depth | Ultrasonic distance meter (SR50A, Campbell Scientific Inc.) |
Fluxes of non-CO2 gases
| Gas | CH4 |
| Method | Open-path eddy covariance using LI-7700 (Li-Cor) |
| Measurement height | 2.3 m |
| Data logger | CR6 (Campbell Scientific Inc.) |
| Data storage | microSD card |
Other
| Soil respiration | - |
| Phenology | Phenological Camera (TLC2000, Brinno) |
| LAI | Monthly using a plant canopy analyzer (LAI-2200) |
Observation Period and Data Availability
| Measurement Period | from May 2012 to March 2021 |
|---|---|
| Measurement Frequency | Continuous |
| Data Availability | - |
Contact
Masahito Ueyama (mueyama[at]omu.ac.jp)
Osaka Metropolitan University, Graduate School of Agriculture
1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
Tel: +81-72-254-9432
Takashi Hirano (hirano[at]agr.hokudai.ac.jp)
Research Faculty of Agriculture, Hokkaido University
Kita-ku, Sapporo 060-8589, Japan
Yasuhiro Kominami (comy[at]affrc.go.jp)
National Agriculture and Food Research Organization,
Hokkaido Agricultural Research Center
Infrastructure
Pole Tower, Electric Power (AC)
Publication
Ueyama, M., Yazaki, T., Hirano, T., Futakuchi, Y., Okamura, M., 2020.
Environmental controls on methane fluxes in a cool temperate bog.
Agricultural and Forest Meteorology,281, 107852.
Ueyama, M., Yazaki, T., Hirano, T., Endo, R., 2022. Partitioning methane flux
by the eddy covariance method in a cool temperate bog based on a
Bayesian framework. Agricultural and Forest Meteorology, 108852.
Ueyama, M., Knox, S. H., Delwiche, K. B., Bansal, S., Riley, W. J., Baldocchi,
D., Hirano, T., McNicol, G., Schafer, K., Windham-Myers, L., Poulter, B.,
Jackson, R. B., Chang, K.-Y., Chen, J., Chu, H., Desai, A. R., Gogo, S., Iwata,
H., Kang, M., Mammarella, I., Peichl, M., Sonnentag, O., Tuittila, E.-S., Ryu, Y.,
Euskirchen, E. S., Göckede, M., Jacotot, A., Nilsson, M. B., Sachs, T., 2023.
Modeled production, oxidation, and transport processes of wetland
methane emissions in temperate, boreal, and Arctic regions. Global
Change Biology, DOI:10.1111/gcb.1.