Site name	Palangkaraya drained forest
AsiaFlux site code	PDF
Location	Kalangpangan, Palangkaraya, Central Kalimantan,  Indonesia
Position	2º 20' 42" S, 114º 2' 11" E
Elevation	30 m above sea level
Slope	0 deg
Terrain type	Flat
Area	Greater than 50 km2
Fetch	About 400, 500, 1500 m, and longer than 5000 m,  respectively, for the north, east, west and south  directions
Climate	Tropics (Dry season: May or June through October  or November)
Mean annual air temperature	26.3 degC (2002-2005)
Mean annual precipitation	2231 mm (2002-2005)
Vegetation type	Tropical peat swamp forest (evergreen) drained in  the 1990’s
Domestic species (Overstory)	Combretocarpus rotundatus, Cratoxylum  arborescens, Buchanania sessifolia and  Tetramerista glabra
Dominant species (Understory)	-
Canopy height	About 26 m
Age	-
LAI	Around 5 m2 m-2 in plant area index (PAI) at 1.3 m  height measured in June 2006 using a plant canopy  analyzer (LAI2000, Licor)
Soil type	Peat (drained by canal built in the late 1990s;  Hirano et al., Carbon dioxide balance of a tropical  peat swamp forest in Kalimantan, Indonesia. Global  Change Biology, 13, 412-425, 2007)

Observations
Eddy Covariance method (CO₂)

System	Open-path system
Wind speed	CSAT3, Campbell, USA
Air temperature	CSAT3, Campbell, USA
Water vapor	Open-path (LI-7500, LI-COR, USA)
CO2	Open-path (LI-7500, LI-COR, USA)
Measurement height	41.3 m
Sampling frequency	10 Hz
Averaging time	1 hour
Data logger	8421, Hioki E. E. Corp., Ueda, Japan
Data storage	CF
Original data	Raw data

Meteorology

Observation items	Levels/ Depth	Instrument
Global solar radiation(incoming)	40.6 m	CNR1, Kipp & Zonen, The Netherlands
Global solar  radiation (outgoing)	40.6 m	CNR1, Kipp & Zonen, The Netherlands
Long-wave radiation(incoming)	40.6 m	CNR1, Kipp & Zonen, The Netherlands
Long-wave radiation(outgoing)	40.6 m	CNR1, Kipp & Zonen, The Netherlands
Net radiation	40.6 m	CNR1, Kipp & Zonen, The Netherlands
PPFD (incoming)	40.6 m	LI-190S, Licor, USA
PPFD (outgoing)	40.6 m	LI-190S, Licor, USA
Direct / diffuse radiation	-
Direct / diffuse PPFD	-
Air temperature	41.7 m	HMP45, Vaisala with nonventilated radiation  shield  (DTR403A, Vaisala, Finland)
Humidity	41.7 m	HMP45, Vaisala with nonventilated radiation  shield  (DTR403A, Vaisala, Finland)
Soil temperature	0.05 m	Thermocouple thermometer
Soil heat flux	-
Soil water   content	0-0.2 m	CS615, Campbell
Wind speed	41.7 m	03001-5, R.M. Young
Wind direction	41.7 m	03001-5, R.M. Young
Barometric   pressure	-
Precipitation	41 m	TE525, Campbell, USA)
CO2 concentration	2, 10, 18, 25,  30 and 41.3 m	LI800 or LI820, Licor, USA

Other

Soil respiration	Continuous from January 2004 through  April 2006
Photosynthesis	-
Ecological investigation	-