RFB: Rubber Flux Bueng Kan

General site detail (Updated 12 June 2013)
 Site name
 Rubber Flux Bueng Kan
 AsiaFlux site code
 Location Pak Khat district, BuengKan province, Thailand
 Position 18°13'22.77"N , 103°18'59.46"E
 Elevation 186 m 
 Slope 1-3 degree
 Terrain type
 Area 16 ha
 Fetch -
 Climate Tropical monsoon climate
 Mean annual air temperature
 Mean annual precipitation
 1816 mm 
 Vegetation type
 Mono-specific rubber tree (Hevea brasiliensis)  plantation
 Domestic species (Overstory)
 Rubber tree (Hevea brasiliensis Müll. Arg.)
 Dominant species (Understory)
 Tropic ageratum (Ageratum conyzoides L.)
 Canopy height
 8-9 m
 Age 4 years old
 LAI 1.5
 Soil type
 Sandy clay loam at 0-1 m and Clay loam at 
  0.1-0.3 m (Phon Phisai series: Pp)

Eddy Covariance method (CO2)
 System Open-path system (LI-7500, LI-COR)
 Wind speed
  Three-dimensional sonic anemometer-thermometer  (Campbell CSAT3)
 Air temperature
 Three-dimensional sonic anemometer-thermometer  (Campbell CSAT3)
 Water vapor
 Open-path CO2/H2O analyzer (LI-7500, LI-COR)
 CO2 Open-path CO2/H2O analyzer (LI-7500, LI-COR)
 Measurement height
 11.5 m
 Sampling frequency
 20 Hz
 Averaging time
 30 min
 Data logger
 CR5000, (Campbell Sci., USA)
 Data storage
 Original data
 Raw data

 Observation items
  Levels/ Depth
 Global solar radiation(incoming)
 15 m  Net radiometer (CNR-1, Campbell)
 Global solar 
radiation (outgoing)
 15 m  Net radiometer (CNR-1, Campbell)
 Long-wave radiation(outgoing) 
 15 m  Net radiometer (CNR-1, Campbell)
 Long-wave radiation(outgoing) 
 15 m  Net radiometer (CNR-1, Campbell)
 Net radiation
 15 m  Net radiometer (CNR-1, Campbell)
 PPFD (incoming)
 15 m  LI-190,Li-Cor Inc., Lincoln, NE, USA
 PPFD (outgoing)
 Direct / diffuse radiation
 15 m LI-COR Silicon Pyranometer 
 (LI-200SA, Li-COR)
 Direct / diffuse PPFD
 Air temperature
 15.5 m Temperature and Relative Humidity  Probe  (Vaisala HMP50)
 Humidity 15.5 m Temperature and Relative Humidity  Probe  (Vaisala HMP50)
 Soil temperature
 0.2 m and  0.4,0.6,0.16,0.32,0.64,  1 m (three points) Averaging Soil Thermocouple, TCAV  Sensors , Campbell) and Thermocouple  Type E
 Soil heat flux
  8 cm ( two points) Soil Heat Flux Plate
 (HFP01-L, Campbell)
 Soil water 
  0.6,0.10,0.30,0.50,0.70,  1,1.50 m (three points) TDR sensor (CS616, Campbell)
 Wind speed
 16 m Campbell 03002 R.M. Young Wind  Sentry Set
 Wind direction
 16 m Campbell 03002 R.M. Young Wind  Sentry Set
 Precipitation 15 m Tipping-bucket rainguage
 11.5 m Open-path CO2/H2O analyzer 
Li 7500, Li-Cor Inc., Lincoln, NE, USA)
 H2O concentration
 11.5 m Open-path CO2/H2O analyzer 
Li 7500, Li-Cor Inc., Lincoln, NE, USA)
 Soil respiration
 LI8100A-automated soil respiration 
 (every 2 week)
 Photosynthesis -
 Ecological investigation
 Tree height, diameter, root growth and  turnover, phenology, LAI and canopy  structure, litter dynamics, sap flow  velocity, water potential in tree
Observation Period and data Availability
 Measurement Period
 from October 2012 to present
 Measurement Frequency
 Data Availability
 Jessada Phattaralerphong (csnjdp [at] ku.ac.th)
 Faculty of Natural Resources and Agro-Industry, Kasetsart University  Chalermphrakiat Sakonnakhon Province Campus59 Moo1  Sakonnakhon-Nakhonphranom Rd. Moung District, Sakonnakhon  Province, 47000, Thailand
 Tel. +66 (0)42-731233, (0)42-731251 Ext. 2200 Fax. +66 (0)42-731250

 Poonpipope Kasemsap (agrppk [at] ku.ac.th)
 Department of Horticulture, Faculty of Agriculture, Kasetsart University,  10900 Bangkok, 50 Paholyothin Road, Chatuchak, Bangkok. 10900.  Thailand
 Frederic Gay (frederic.gay [at] cirad.fr)
 Cirad Office, Hevea research Platform, Kasetsart University, 10900  Bangkok, Thailand Tel : +66-84-701-3037
 [Micrometerorology]  Jate Sathornkich (psdjate [at] ku.ac.th)
 [Sapflow] Tiwa Pakoktom (agrtwp [at] kua.ac.th)
 [Soil respiration] Chompunut Chayawat
 [Data processing] Duangrat Satakhun
Research Fund
 The Thailand Research Fund (TRF) 

 15m TIwer, Electric Power: DC, telephone