PDF:Palangkaraya drained forest

General site detail (Updated 21 May 2008)
 Site name
 Palangkaraya drained forest
 AsiaFlux site code
 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
 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)

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
 Original data
 Raw data

 Observation items
  Levels/ Depth
 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 
 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
 Precipitation 41 m TE525, Campbell, USA)
 2, 10, 18, 25,  30 and 41.3 m LI800 or LI820, Licor, USA
 Soil respiration
 Continuous from January 2004 through  April 2006
 Photosynthesis -
 Ecological investigation
Observation Period and data Availability
 Measurement Period
 November 2001 to present
 Measurement Frequency
 Data Availability
 2002-2005 in AsiaFlux Database
 Takashi Hirano (hirano [at] env.agr.hokudai.ac.jp)
 Graduate School of Agriculture,Hokkaido UniversityKita-ku, 
 Sapporo 060-8589, Japan
 TEL +81-11-706-3689FAX +81-11-727-3689
 Calibration Information
 CO2 analyzers were calibrated every three months using span gases.

 Tower,Solar energy system

 Research Fund
 Core University Program (FY1997-2006) from JSPS, Japan 
 Grant-in-  Aid for Scientific Research (Nos.13375011, 15255001 and  18403001) from the Japanese Ministry of Education, Culture, Sports,  Science and Technology, Japan (FY2001-2008)

 Other Information
 The site is operated in collaboration with University of Palangkaraya  (UNPAR), Indonesia.

 Hirano et al., Carbon dioxide balance of a tropical peat swamp forest in  Kalimantan, Indonesia. Global Change Biology, 13, 412-425, 2007

 Hirano et al., Energy balance of a tropical peat swamp forest in Central  Kalimantan, Indonesia. Phyton, 45, 67-71, 2005.