NKS: Nakashibetu Station, NLBC

General site detail (Updated 3 May 2010)
 Site name
 Nakashibetu Station, NLBC
 AsiaFlux site code
 NKS
 Location Sakuragaoka,Nakashibetu, Hokkaido, Japan
 Position  43° 32´ N, 144° 58´ E (GPS)
 Elevation 50 m above sea level
 Slope -
 Terrain type
 Almost Flat
 Area 250x200m for Chemical fertilizer plot and 250 x 150m for Manure plot (Total area is 8.8 ha)
 Fetch -
 Climate Cool Temperate
 Mean annual air temperature
 5.2 deg (1979 - 2000)
 Mean annual precipitation
 1120 mm (1979 - 2000)
 Vegetation type
 Hay meadow (Chemical fertilizer and Manure plots)
 Domestic species (Overstory)
 Timothy (Phleum pretense L.) 
 Quack grass (Agropyron repens L., P.Beauv) 
 Reed canarygrass (Phalaris arundinacea. L.)
 Dominant species (Understory)
 -
 Canopy height
 Maximum 1.0 m
 Age -
 LAI -
 Soil type
 Andosol (Acrudoxic Virtric Melanudand)

Observations
Eddy Covariance method (CO2)
 System Open-path system 
 Wind speed 
 Sonic anemometer-thermometer (CSAT3, Campbell, USA)
 Air temperature
 Sonic anemometer-thermometer (CSAT3, Campbell, USA)
 Water vapor
 NDIR (LI-7500, LICOR, USA)
 CO2 NDIR (LI-7500, LICOR, USA)
 Measurement height
 2.5 m
 Sampling frequency
 10 Hz
 Averaging time
 30 min
 Data logger
 CR23X-4M, cambell, USA
 Data storage
 CF
 Original data
 Raw data

Meteorology
 Observation items
  Levels/ Depth
 Instrument 
 Global solar radiation(incoming)
 - 
 Global solar 
radiation (outgoing)
 - 
 Long-wave radiation(incoming) 
 - 
  Long-wave radiation(outgoing) - 
 Net radiation
 - 
 PPFD (incoming)
  1.6 m Quantum sensor (LI-COR LI-190SA)
 PPFD (outgoing)
  1.6 m Quantum sensor (LI-COR LI-190SA)
 Direct / diffuse radiation
 - 
 Direct / diffuse PPFD
 - 
 Air temperature
 2.5 m Ventilated Pt resistance thermometer  (HMP-45A, VAISALA) at mature field
 Humidity 2.5 m 
 Capacitive hygrometer
 (HMP45A, VAISALA)
 Soil temperature
 -0.1, -0.2, -0.3  m T-type thermocouple
 (T-soil4, MeiwaShoji)
 Soil heat flux
 
 
 Soil water 
 content 
 -0.1, -0.2, -0.3  m (EC20, DECAGON)
 Wind speed
 2.5 m 
 Sonic anemometer-thermometer
 (CSAT3, Campbell)
 Wind direction
 2.5 m Sonic anemometer-thermometer
 (CSAT3, Campbell)
 Barometric 
 pressure
 2.5 m Sonic anemometer-thermometer
 (CSAT3, Campbell)
 Precipitation - 
 COconcentration
 - 
Other
 Soil respiration
 Static closed chamber
 Methane (CH4) Static closed chamber (biweekly)
 since 2004-
 Nitrous oxide (NO2) Static closed chamber (biweekly)
 since 2004-
 

Observation Period and data Availability

 Measurement Period
 From September 2004 to present
 Measurement Frequency
 Continuous
 Data Availability
 N/A
Contact
 Takehiko MATSUMOTO (matsumoto-takehiko [at] hro.or.jp)
 Local Independent Administrative Agency Hokkaido Research  Organization.Agricultural Research DepartmentKONSEN Agricultural  Experiment StationAsahigaoka7,Nakashibetu,Hokkaido 
 086-1135,Japan
 TEL : + 81-153-72-2843 FAX : + 81-153-73-5329
 Takatoshi ARITA (arita-takatoshi [at] hro.or.jp)
 Hokkaido Konsen Agricultural Experiment Station,  Asahigaoka7,Nakashibetu,Hokkaido 086-1135,Japan 
 TEL : + 81-153-72-2843 FAX : + 81-153-73-5329
 Infrastructure
 2.5m high tower, AC 100V


 Research Fund
 Research grants from Racing and Livestock Association organized by  Japan Grassland Agriculture & Forage Seed Association for the  Greenhouse Gas Emissions Mitigation Project in Japanese  Grasslands