MMP - AsiaFlux

MMP: Mae Moh plantation

General site detail　(Updated 04 October 2007)

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
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)

Observations
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 -> 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)
CO₂concentration	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.