API: Appi forest meteorology research site
General site details
| Site name | Appi forest meteorology research site |
|---|---|
| AsiaFlux site code | API |
| Location | Hachimantai, Iwate, Japan |
| Position | 40º 00' 06" N, 140º 56' 15" E (World Geodetic System 1984) |
| Elevation | 825m above sea level (World Geodetic System 1984) |
| Slope | 5.7 degree |
| Terrain type | N/A |
| Area | 43.5ha |
| Fetch | More than 300m |
| Climate | Cool temperate |
| Mean annual air temperature | 6.1 degreeC |
| Mean annual precipitation | N/A |
| Vegetation type | Cool temperate deciduous broadleaved forest |
| Dominant Species (Overstory) | Japanese beech (Fagus crenata Blume) |
| Dominant Species (Understory) | N/A |
| Canopy height | 17-19m |
| Age | Approx. 70 years |
| LAI | N/A |
| Soil type | Brown forest soil |
Observation
Eddy Covariance method (CO2)
| System | Closed-path system ( CO2 flux) |
|---|---|
| Wind speed | Three-dimensional sonic anemometer-thermometer (DA600- 3T Probe TR-61C, KAIJO, Japan) |
| Air temperature | Three-dimensional sonic anemometer-thermometer (DA600- 3T Probe TR-61C, KAIJO, Japan), Platinum resistance thermometer (HMP45A, VAISALA, Finland) |
| Water vapor | Capacitive hygrometer (HMP45A, VAISALA, Finland) |
| CO2 | Closed-path (LI-6262, LI-COR, USA) |
| Measurement height | 31 m |
| Sampling frequency | 10 Hz |
| Averaging time | 30 min |
| Data logger | DRM3b, TEAC, Japan |
| Data storage | MO |
| Original data | Raw data |
Meteorology
| Observation items | Levels/Depth | Instrument |
|---|---|---|
| Global solar radiation(incoming) | 31 m | Pyranometer (CM6F, Kipp & Zonen, Netherland) |
| Global solar radiation (outgoing) | 31 m | Pyranomete (CM6B, Kipp & Zonen, Netherland) |
| Long-wave radiation(outgoing) | 31 m | Infrared radiometer with fan (PIR, Eppley, USA) |
| Long-wave radiation(outgoing) | 31 m | Infrared radiometer (PIR, Eppley, USA) |
| Net radiation | - | |
| PPFD (incoming) | 31, 18, 15, 12, 9, 6, 3 m | Quantum sensor (LI-190B, LI-COR, USA) |
| PPFD (outgoing) | 31,3 m | Quantum sensor (LI-190B, LI-COR, USA) |
| Direct / diffuse radiation | - | |
| Direct / diffuse PPFD | - | |
| Air temperature | 31, 24, 20, 18, 15, 12, 9, 6, 3 m | Platinum resistance thermometer (HMP45D, VAISALA, Finland) |
| Humidity | 31, 24, 20, 18, 15, 12, 9, 6, 3 m | Capacitive hygrometer (HMP45D, VAISALA, Finland) |
| Soil temperature | 0.02, 0.05, 0.1, 0.2, 0.4, 0.8 m | Platinum resistance thermometer |
| Soil heat flux | 0.02 m | Thermopile heat flux sensor (MF-81,EKO,Japan) |
| Soil water content | 0.05,0.15,0.30,0.50, 0.80,0.95 m | TDR sensor(CS615,Campbell,USA) |
| Wind speed | 31, 24, 20, 18, 15,12, 9, 6, 3 m | 3-cups anemometer (WM-30P, Ikeda, Japan) |
| Wind direction | 31 m | Vane (A-802, YOKOGAWA, Japan) |
| Barometric pressure | 5 m | Silicon capacitive absolute pressure sensor (PTB-100,VAISALA,Finland) |
| Precipitation | 4.5 m | Rain gauge(B-071,YOKOGAWA,Japan) |
| CO2 concentration | 31,24,20,18,15,12,9,3 m | Closed-path CO2/H2O analyzer (LI-6262, LI-COR, USA) |
Other
| Soil respiration | Continuous |
| Photosynthesis | Occasionally |
| Ecological investigation | Tree heights, stand density, diameter |
Observation Period and Data Availability
| Measurement Period | April 2000 to present |
|---|---|
| Measurement Frequency | Continuous |
| Data Availability | N/A |
Contact
Yukio Yasuda (yassan [at] ffpri.affrc.go.jp)
Takeshi Saito (saitota [at] ffpri.affrc.go.jp)
Tohoku research center
Forestry and Forest Products Research Institute
92-25 Nabeyashiki, Shimokuriyagawa, Morioka, lwate 020-0123, Japan
Tel: +81-19-641-2150 Fax: +81-19-641-6747
Infrastructure
Tower, Electrical power (100V AC 50Hz), telephone
Research Fund
Research grant #200303 (2003-2005) of the Forestry and Forest Products Research Institute
Research grant #200303 (2003-2005) of the Forestry and Forest Products Research Institute
Research Fund (Evaluation, Adaptation and Mitigation of Global Warming in Agriculture, Forestry and Fisheries：Research and Development) by Ministry of Agriculture, Forestry and Fisheries of Japan