MMP: Mae Moh plantation

General site detail (Updated 04 October 2007)
 Site name
 Mae Moh plantation
 AsiaFlux site code
 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
 Domestic 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)

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
 Original data
 Raw data

 Observation items
  Levels/ Depth
 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 -> 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,  
 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 
 -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)
 37.3 m (CS105, Campbell)
 Precipitation 1 m Tipping bucket
 (No.34-T; OHTA KEIKI, Japan)
 28.0, 20.0, 14.0, 8.0, 2.0 m Closed-path infrared gas analyzer (LI-820, LI- 
 COR, USA) (Occasional measurement)
 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
 Data Availability
 Masakazu Suzuki (suzuki [at]
 Natsuko Yoshifuji (natsuko [at]
 Faculty of Agriculture, University of Tokyo 
 Yayoi1-1-1, Bunkyo, Tokyo,  113-8657, Japan
 Tel:+81-3-5841-5214 /Fax:+81-3-5841-5464
 Nobuaki Tanaka (tanaka [at]
 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]
 Faculty of Forestry, Kasetsart UniversityChatujak, Bangkok 10900,  Thailand 
 Tel: +66-84-000-7122
 Katsunori TANAKA (ktanaka [at]
 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
 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)

 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.