YMS: Yamashiro forest meteorology research site

General site detail (Updated 14 February 2007)
 Site name
 Yamashiro forest meteorology research site
 AsiaFlux site code
 Location Yamashiro, Souraku, Kyoto, Japan
 Position 135º 50' 46.2" E, 34º 47' 41.2" N 
 (World Geodetic System 1984)
 Elevation 225 m above sea level
 (World Geodetic System 1984)
 Slope 10 degree
 Terrain type
 Forest on complex terrain
 Area More than 10km2
 Fetch More than 5km to north and east direction, 2km to  west and 3km to south directions
 Climate warm temperate, Cfa
 Mean annual air temperature
 15.5 deg 
 Mean annual precipitation
 1449 mm 
 Vegetation type
 deciduous broadleaved secondary forest
 Domestic species (Overstory)
 Quercus serrata, Ilex pedunculosa
 Dominant species (Understory)
 Rhododendron reticulatum, Rhododendron  macrosepalum
 Canopy height
 6-20 m
 Age 50-60 years
 LAI 1.2 (winter) - 4.8(summer)
 Soil type
 immature forest soil with sandy weathered granite

Eddy Covariance method (CO2)
 System Open- (CO2 flux, latent heat flux) and 
 Closed-path system (CO2 flux)
 Wind speed 
 Three-dimensional sonic anemometer-thermometer
 (DA600, KAIJO, Japan)
 Air temperature
 Three-dimensional sonic anemometer-thermometer
 (DA600, KAIJO, Japan )
 Water vapor
 Band pass covariance(HMP-45,Visala) 
 Open-path(Li-7500 LI-COR, USA)
 CO2 Closed-path (LI-6262 or LI-7000, LI-COR, USA)
 Measurement height
 36.1 m
 Sampling frequency
 10 Hz 
 Averaging time
 30 min
 Data logger
 DRM3a, TEAC, Japan
 Data storage
 Original data
 Raw data

 Observation items
  Levels/ Depth
 Global solar radiation(incoming)
 26.4 m Pyranometer (CM6F, Kipp & Zonen, Netherland)
 Global solar 
radiation (outgoing)
 26.4 m
 Pyranometer (CM6B, Kipp & Zonen, Netherland)
 Long-wave radiation(incoming) 
 26.4 m
 Pyrgeometer (MS-202F,EKO,Japan)
 Long-wave radiation(outgoing) 26.4 m
 Pyrgeometer (MS-202,EKO,Japan)
 Net radiation
 26.4 m Net radiometer (CN-11, EKO, Japan)
 PPFD (incoming)
 26.4 m PAR sensor(LI-190SA,LI-COR,USA)
 PPFD (outgoing)
 Direct / diffuse  radiation
 Direct / diffuse  PPFD
 Air temperature
 6 heights Temperature Probe(HMP-45A,Visala,Finland)
 Humidity 6 heights Humidity Probe(HMP-45A,Visala,Finland)
 Soil temperature
 about 40 points thermocouple
 Soil heat flux
 4 points
 Soil heat flux meter(MF-81,EKO,JAPAN)
 Soil water 
 12 points TTDR(HYDRA, Stivens vitel, USA)
 Wind speed
 6 heights 3-cups anemometer (AG750, Makino, Japan)
 Wind direction
 26.4 m Vane ( W200P, Vector instruments, UK)
 Precipitation 10m,1.5m Rain gauge (RT-5,IKEDA instruments, JAPAN))
 8 heights Closed-path CO2/H2O analyzer
 (LI-6262, LI-COR, USA)
 Soil respiration
 Photosynthesis 2006 summer - (LI-6400,LI-COR, USA)
 Ecological investigation
 Tree heights, stand density, diameter
Observation Period and data Availability
 Measurement Period
 November 1999 to present
 Measurement Frequency
 Data Availability
 Yuji Kominami (kominy[at]ffpri.affrc.go.jp)
 Takafumi Miyama (tmiyama[at]ffpri.affrc.go.jp)
 Kansai research center Forestry and Forest Products Research  Institute68 Nagaikyutaroh, Momoyama, Fushimi, Kyoto,Kyoto
 612-0855, JapanTel: +81-75-611-1201, Fax: +81-75-611-1207
 [Soil respiration] Koji Tamai (a123[at]ffpri.affrc.go.jp)
 Kyushu research centerForestry and Forest Products Research  Institute4-11-16 Kurokami, Kumamoto,Kumamoto 860-0862, Japan
 Tel: +81-96-343-3168 Fax: +81-96-344-5054
 Tower, Electrical power (100V AC 60Hz)

 Research grant #199903 (1999-2002) of the Forestry and Forest   
 Products Research Institute
 Research grant #200303 (2003-2005) of the Forestry and Forest  Products Research Institute