MMP: Mae Moh plantation
General site details
| Site name | Mae Moh plantation |
|---|---|
| AsiaFlux site code | MMP |
| Location | Lampang province, Thailand |
| Position | 18º 23' N, 99º 43' E |
| Elevation | 380 m above sea level |
| Slope | N/A |
| Terrain type | Gentle slope |
| Area | - |
| Fetch | - |
| Climate | Tropical savanna (Aw) |
| Mean annual air temperature | 25.6 degree C (2000 to 2007) |
| Mean annual precipitation | 1448 mm (2001-2006) |
| Vegetation type | Artificial teak plantation |
| Dominant Species (Overstory) | Tectona grandis Linn. f. |
| Dominant Species (Understory) | - |
| Canopy height | 19-22 m |
| Age | Planted in 1968 |
| LAI | 2.5-2.9 in the rainy season (tentative) |
| Soil type | Loamy Paleustults (Thai classification) |
Observation
Eddy Covariance method (CO2)
| System | Open-path system |
|---|---|
| Wind speed | Three-dimensional sonic anemometer-thermometer (USA-1, METEK, Germany) |
| Air temperature | Three-dimensional sonic anemometer-thermometer (USA-1, METEK, Germany) |
| Water vapor | Open-path infrared gas analyzer (LI7500, LI-COR) |
| CO2 | Open-path infrared gas analyzer (LI7500, LI-COR) |
| Measurement height | 28.7 m |
| Sampling frequency | 10 Hz |
| Averaging time | 30 min |
| Data logger | CR5000, Campbell |
| Data storage | CF |
| Original data | Raw data |
Meteorology
| Observation items | Levels/Depth | Instrument |
|---|---|---|
| Global solar radiation(incoming) | 22.3 -> 41.4 m 0.5 m | Pyranometer (LI200X, LI-COR, USA -> CM-21, Kipp & Zonen, Netherlands) Pyranometer (MS801, EKO, Japan -> CM-21, Kipp & Zonen) |
| Global solar radiation (outgoing) | 22.3 -> 36.6 m | Pyranometer (LI200X, LI-COR, USA -> CM-21, Kipp & Zonen, Netherlands) Pyranometer (MS801, EKO, Japan -> CM-21, Kipp & Zonen) |
| Long-wave radiation(incoming) | 41.4 m | Pyrgeometer (PIR, Epply, USA -> CG4, Kipp & Zonen) |
| Long-wave radiation(outgoing) | 36.6 m | Pyrgeometer (PIR, Epply) |
| Net radiation | - | |
| PPFD (incoming) | 22.3 -> 41.4m 0.5 m | Quantum sensor (PAR-02, Prede, Japan -> LI190-SA, LI-COR) Quantum sensor (PAR-02, Prede -> LI190-SA, LI-COR -> IKS-27, KOITO, Japan) |
| PPFD (outgoing) | 22.3 -> 36.6 m | Quantum sensor (PAR-02, Prede -> LI190-SA, LI-COR) |
| Direct / diffuse radiation | - | |
| Direct / diffuse PPFD | - | |
| Air temperature | 26.2 -> 39.3 m 39.3, 31.9 m 28.0, 20.0, 14.0, 8.0, 2.0 m | Resistive platinum sensor (HMP45D -> HMP45A, Vaisala, Finnland) Ventilated wet and dry bulb hygrometer (MH- 020S, EKO, Japan) Sensor with dataloggers (H08-032-08, Onset, USA) |
| Humidity | 26.2 -> 39.3 m 39.3, 31.9 m | Capacitive hygrometer (HMP45D -> HMP45A, Vaisala) Ventilated wet and dry bulb hygrometer (MH- 020S, EKO) |
| Soil temperature | -0.1, -0.2, -0.4, -0.6 m | Thermo couple (copper-constantan), PT100Ω |
| Soil heat flux | -0.01, -0.1m | MF81 (EKO, Japan) |
| Soil water content | -0.1, -0.2, -0.4, -0.6 m | TDR (CS615; Campbell, USA) Tensiometer (DIK3021, DAIKI RIKA, Japan) |
| Wind speed | 22.6 -> 39.3 m, 31.9, 26.6, m | 3cup anemometer (AC750, MAKINO, Japan) |
| Wind direction | 39.3 m | Wind vane (VR036, MAKINO) |
| Barometric pressure | 37.3 m | (CS105, Campbell) |
| Precipitation | 1 m | Tipping bucket (No.34-T; OHTA KEIKI, Japan) |
| CO2 concentration | 28.0, 20.0, 14.0, 8.0, 2.0 m | Closed-path infrared gas analyzer (LI-820, LI- COR, USA) (Occasional measurement) |
Other
| Soil respiration | Closed dynamic chamber method (LI6262, LI-COR) |
| Photosynthesis | - |
| Ecological investigation | Tree density, Tree height, DBH increment by dendro-band, Litter |
Observation Period and Data Availability
| Measurement Period | from June 2000 to present |
|---|---|
| Measurement Frequency | Continuous |
| Data Availability | N/A |
Contact
Masakazu Suzuki (suzuki [at] fr.a.u-tokyo.ac.jp) Natsuko Yoshifuji (natsuko [at] fr.a.u-tokyo.ac.jp) Faculty of Agriculture, University of Tokyo Yayoi1-1-1, Bunkyo, Tokyo, 113-8657, Japan Tel:+81-3-5841-5214 /Fax:+81-3-5841-5464 http://www.crestmonsoon.org/index.html
Nobuaki Tanaka (tanaka [at] fr.a.u-tokyo.ac.jp) University Forest in Aichi, University of Tokyo11-44 Goizuka, Seto City, Aichi 489-0031 JAPAN Tel: +81-561-82-2371 Fax: 0561-85-2838
Chatchai TANTASIRIN (fforcct [at] ku.ac.th) Faculty of Forestry, Kasetsart UniversityChatujak, Bangkok 10900, Thailand Tel: +66-84-000-7122
Katsunori TANAKA (ktanaka [at] jamstec.go.jp) Frontier Research Center for Global Change3173-25 Showa-machi, Kanazawa-ku, Yokohama, Kanagawa 236-0001 JAPAN Tel: +81-45-778-5547 Fax: +81-45-778-5706
Infrastructure
Tower, Electric power (220V AC)
Research Fund
GEWEX/GAME-T (2000-2001) Core Research for Evolutional Science and Technology (CREST) Project by Japan Science and Technology Agency (JST) “Effects of rainfall variability on water cycle and ecosystem in tropical forest under Asian monsoon climate” (2003-2008)
Publication
Yoshifuji, N., Kumagai, T., Tanaka, K., Tanaka, N., Komatsu, H., Suzuki, M., Tantasirin, C. (2006) Inter-annual variation in growing season length of a tropical seasonal forest in northern Thailand. Forest Ecology and Management, 229, 333-339.