TOE:Tomakomai Experimental Forest
General site detail (Updated 4 November 2008) 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 | Domestic 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 |
ObservationsEddy Covariance method (CO 2) | 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
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Meteorology Observation items
| Levels/ Depth
| Instrument
| Global solar radiation(incoming)
| 32.5 m | MS-401F, EKO, Tokyo, Japan | Global solar
radiation (outgoing)
| - | | Long-wave radiation(incoming)
| - | | | Long-wave radiation(outgoing) | - | | Net radiation
| - | | PPFD (incoming)
| 32.5 m | 1998- 2005 (ML-020P, EKO Inc., Tokyo, Japan) after 2005 ( LI1-90SB, LI-COR, NE, USA) | PPFD (outgoing)
| - | | Direct / diffuse radiation
| - | | Direct / diffuse PPFD
| - | | 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) | Soil heat flux
| - | | Soil water
content
| - | | Wind speed
| 33 m | Anemometer
(CW-154, Ogasawara Inc., Tokyo, Japan) | Wind direction
| 33 m | Anemometer
(CW-154, Ogasawara Inc., Tokyo, Japan) | Barometric
pressure
| - | | | 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 | | Photosynthesis | For Q.cricpula in 1999 by LI-6400 | Ecological investigation
| Tree census at every year |
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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 Research Fund
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.
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