BBY: Bibai bog


General site detail (Updated 16 September 2015)
 Site name
Bibai bog
 AsiaFlux site code
BBY
 LocationBibai, Hokkaido
 Position43°19' 22.82"N, 141°48'38.51"E
 Elevation17 m 
 Slope0 degree, North : 0 degree
 Terrain type
Flat plain field
 AreaPreserved wetland
 FetchWetland dominated by Sphagnum moss : 60 m for north, 40 m for south, 100 m for west, and 50 m for east
Wetland including Sasa : 270 m for north, 220 m for south, 200 m for west, and 330 m for east
 ClimateCool temperate (Dfb)
 Mean annual air temperature
7.2ºC (1981-2010 mean)
 Mean annual precipitation
1156.5 mm (1981-2010 mean)
 Vegetation type
Wetland dominated by Sphagnum moss
 Domestic species (Overstory)
Sphagnum moss, Rhynchospora fauriei, 
Rhynchospora alba, Moliniopsis japonica, Aster 
rugulosus, Lobelia sessilifolia, Sasa palmate, 
Toxicodendron trichocarpum
 Dominant species (Understory)
 -
 Canopy height
30 to 50 cm
 Age -
 LAIMaximum ap 2 m2 m-2
 Soil type
peat

Observations
Eddy Covariance method (CO2)
 SystemOpen-path system
 Wind speed
Sonic anemometer (CSAT3, Campbell Scientific Inc.,)
 Air temperature
Sonic anemometer (CSAT3, Campbell Scientific Inc.,)
 Water vapor
IRGA (EC150, Campbell Scientific Inc.,)
 CO2IRGA (EC150, Campbell Scientific Inc.,)
 Measurement height
2.3 m
 Sampling frequency
10 Hz
 Averaging time
30 min
 Data logger
CR1000 (Campbell Scientific Inc.), CR6 (Campbell Scientific Inc.)
 Data storage
SD card
 Original data
Raw data

Meteorology
 Observation items
  Levels/ Depth
 Instrument 
 Global solar radiation(incoming)
 1.9 mNet radiometer (CNR1, Campbell Scientific Inc.)
 Global solar 
radiation (outgoing)
 1.9 m
Net radiometer (CNR1, Campbell Scientific Inc.)
 Long-wave radiation(incoming) 
 1.9 mNet radiometer (CNR1, Campbell Scientific Inc.)
 Long-wave radiation(outgoing) 
 1.9 mNet radiometer (CNR1, Campbell Scientific Inc.)
 Net radiation
 -  
 PPFD (incoming)
 1.93 mPyranometer (CPR-PAR-01, Climatec)
 PPFD (outgoing)
 - 
 Direct / diffuse radiation
 - 
 Direct / diffuse PPFD
 - 
 Air temperature
 1.95 and 1.63 m    
Ventilated temperature and humidity  sensor
HMP155 (Campbell Scientific Inc.,)
 Humidity 1.95 and 1.63 m    
Ventilated temperature and humidity  sensor
HMP155 (Campbell Scientific Inc.,)
 Soil temperature
 2, 5, 10, 20, and 30 cmThermocouple at two locations
 Soil heat flux
 - 
 Soil water 
 content 
 5 cmWater content reflectometer (CS616 Campbell Scientific Inc.) at two locations
 Wind speed
 2.3 m
 4.04 m
 2.0 m
Sonic anemometer (CSAT3, Campbell Scientific) 
Aerovane (5103, Young)
Three cup anemometer (010C, MetOne)
 Wind direction
 2.3 m
 4.04 m
Sonic anemometer (CSAT3, Campbell Scientific)
Aerovane (5103, Young)
 Barometric 
 pressure
 2.3 m
 4.04 m
 2.0 m
Barometer (EC150, Campbell Scientific Inc.,)
Barometer (LI-7700, Li-Cor)
Barometer (PTB210, Vaisala)
 Precipitation 2.2 mTipping bucket rain- gauge (model 52202, Young)
 COconcentration
 2.3 mIRGA (EC150, Campbell Scientific Inc.,)
 Water Table
 
Pressure water gauge (HTV010-KP, SENSEZ)
 Soil Oconcentration 10 and 30 mGalvanic-cell type oxygen sensor (KE-25, GS-Yuasa)
 Snow Depth
 Ultrasonic distance meter (SR50A, Campbell  Scientific Inc.)
Fluxes of non-CO2 gases
 Gas
CH4
 MethodOpen-path eddy covariance using LI-7700 (Li-Cor)
 Measurement height2.3 m
 Data loggerCR6 (Campbell Scientific Inc.,)
 Data storageSD card
Other
 Phenology
Garden Watch Camera
 LAIPeriodically using a plant canopy analyzer (LAI-2000)
 
Observation Period and data Availability
 Measurement Period
from May 2012 to present
 Measurement Frequency
10Hz
 Data Availability
 -
Contact
Masahito Ueyama (miyabi-flux [at] muh.biglobe.ne.jp)
Osaka Prefectural University1-1 Gakuen-cho Naka-ku, 
Sakai, Osaka, Japan

Takashi Hirano (hirano [at] env.agr.hokudai.ac.jp)
Research Faculty of Agriculture, Hokkaido University
Kita-ku, Sapporo 060-8589, Japan
Yasuhiro Kominami (comy [at] affrc.go.jp)
National Agriculture and Food Research Organization
Hokkaido Agricultural Research Center
Tomotsugu Yazaki (yazakitm [at] env.agr.hokudai.ac.jp)
Infrastructure
Electric Power:(100V AC 50Hz)


URL
http://www.hokkaidoisan.org/muranotakara/muratakara_db/modules/myalbum/photo.php?lid=176
http://www.sizenken.biodic.go.jp/wetland/44/44.html



Publications

Nagata, O., Takai, F., Hatano, R. (2005) Effect of Sasa Invasion on global warming potential in Sphagnum dominated poor fen in Bibai, Japan, Phyton, 45, 299-307.

Takakai, F., Nagata, O., Hatano, R. (2005). Effect of Sasa invasion on CO2, CH4 and N2O fluxes in Sphagnum dominated poor fen in Bibai, Hokkaido, Japan. Phyton, 45(4), 319-326.