TOE: Tomakomai Experimental Forest
General site details
| Site name | Tomakomai Experimental Forest |
|---|---|
| AsiaFlux site code | TOE |
| Location | Tomakomai, Hokkaido, Japan |
| Position | Flux 42°40”N, 141°36'E (World Geodetic System 1984) |
| Elevation | alt 60m |
| Slope | Flat |
| Terrain type | Plateau |
| Area | 2715 ha |
| Fetch | 5m (South East) |
| Climate | Cool temperate |
| Mean annual air temperature | 7.1 |
| Mean annual precipitation | 1200 mm |
| Vegetation type | Deciduous broad-leaved forest |
| Dominant Species (Overstory) | Quercus crispula, Betula platyphyla, Acer mono |
| Dominant Species (Understory) | Dwarf bamboo |
| Canopy height | 16 m |
| Age | Ca. 54 years old (in 2008) |
| LAI | 4-6 |
| Soil type | Volcanogenous regosol |
Observation
Eddy Covariance method (CO2)
| System | Closed path system (CO2 flux, latent heat flux) |
|---|---|
| Wind speed | Three-dimensional sonic anemometer (Kaijo DAT-600, Japan) |
| Air temperature | Three-dimensional sonic anemometer (Kaijo DAT-600, Japan) |
| Water vapor | Closed-path CO2/H2O analyzers (LI-6262, LI-COR, USA) |
| CO2 | Closed-path CO2/H2O analyzers (LI-6262, LI-COR, USA) |
| Measurement height | 21 m |
| Sampling frequency | 10 Hz |
| Averaging time | 30 min |
| Data logger | DR-M3(1999-2008), LX-100 (2008-) TEAC, Japan |
| Data storage | MO |
| Original data | Raw data |
Meteorology
| Observation items | Levels/Depth | Instrument |
|---|---|---|
| Global solar radiation(incoming) | 32.5 m | MS-401F, EKO, Tokyo, Japan |
| PPFD (incoming) | 32.5 m | 1998- 2005 (ML-020P, EKO Inc., Tokyo, Japan) after 2005 ( LI1-90SB, LI-COR, NE, USA) |
| Air temperature | 19 m | Platinum resistance thermometer and capacitive hygrometer (HMP-45D, Vaisala) |
| Humidity | 19 m | Platinum resistance thermometer and capacitive hygrometer (HMP-45D, Vaisala) |
| Soil temperature | 0, 0.05, 0.1, 0.2, 0.5, 1 m | Platinum resistance thermometer (Yokogawa Weathac Corp., Tokyo, Japan) |
| Wind speed | 33 m | Anemometer (CW-154, Ogasawara Inc., Tokyo, Japan) |
| Wind direction | 33 m | Anemometer (CW-154, Ogasawara Inc., Tokyo, Japan) |
| Precipitation | 0 m | Tipping-bucket rain gauge (B001, Yokogawa Weathac Inc., Tokyo, Japan) |
| CO2 concentration | 21 m | CO2/H2O analyzer (LI-6262, LI-COR, USA) |
Other
| Soil respiration | In 1999 by LI-6400 |
| PhotosynthesisIn 1999 by LI-6400 | For Q.cricpula in 1999 by LI-6400 |
| Ecological investigation | Tree census at every year |
Observation Period and Data Availability
| Measurement Period | 1997-current |
|---|---|
| Measurement Frequency | Continuous |
| Data Availability | N/A |
Contact
Tsutom Hiura (hiura [at] fsc.hokudai.ac.jp)
Yumiko Tanaka
053-0035 Tomakomai Research Station, Hokkaido Univ.,
Takaoka, Tomakomai, Japan
Infrastructure
Scaffolding
Research Fund
IGBP-MESSC (1997-2001)
Publication
Shibata et al. (2005) Ecological Research 20: 325-331
Tanaka et al. (2001) Proceedings of International Workshop for Advanced Flux Network and Flux Evaluation,CGER-Report, CGER-M- 011-2001: 133-137
Takanashi et al. (2005) Ecological Research 20:
Hiura (2005) Ecological Research 20: 271-277
Hikoska, K.et al. (2007) Tree Physiology 27: 1035-1041.
Nabeshima, E. and Hiura, T. (2004) Tree Physiology 24: 745-752.
Ishii, H. et al(2004) Forest Science 50: 342-355.
Nabeshima, E. and Hiura, T. (2008) Ecological Research 23: 281-288.
Kobayashi et al(2002) ISTS 12: 1-3.
Fukushima et al. (1998) Agricultural and Forest Meteorology 92: 203- 210.