FJY:Fujiyoshida forest meteorology research site

General site detail (updated 15 May 2009)
 Site name
 Fujiyoshida forest meteorology research site
 AsiaFlux site code
 Location Fujiyoshida, Yamanashi, Japan
 Position 35.45454 N, 138.76225 E
 (World Geodetic System 1984, GPS: Garmin eTrex  Legend and map)
 Elevation 1030 m above sea level
 (World Geodetic System 1984, GPS: Garmin eTrex  Legend and map)
 Slope 3.5 degree
 Terrain type
 Gentle slope
 Area 36 km2
 Fetch 150 to 3000 m
 Climate Cool temperate
 Mean annual air temperature
 10.1 degreeC
 (1961-1990 at Kawaguchiko weather station)
 Mean annual precipitation
 1483 mm
 (1961-1990 at Kawaguchiko weather station)
 Vegetation type
 Natural evergreen needle-leaf forest
 Domestic species (Overstory)
 Japanese red piine (Pinus densiflora)
 Dominant species (Understory)
 Japanese holly (Ilex edunculosa)
 Canopy height
 20 m
 Age Approx. 90 years
 LAI Max. 5.0
 Soil type
 Immature (composed of volcanic lava partially with  litter and organic matter)

Eddy Covariance method (CO2)
 System Open- (CO2 flux, latent heat flux) and closed-path system  (CO2 flux)
 Wind speed 
 Three-dimensional sonic anemometer-thermometer
 (DA600-3T Probe TR-61C, KAIJO, Japan)
 Air temperature
 Three-dimensional sonic anemometer-thermometer (DA600-  3T Probe TR-61C, KAIJO, Japan), Platinum resistance  thermometer (HMP45A, VAISALA, Finland)
 Water vapor
 Open-path (LI-7500, LI-COR, USA), bandpass 
 (HMP45A, VAISALA, Finland)
 CO2 Open-path (LI-7500, LI-COR, USA), closed-path
 (LI-6262, LI-COR, USA)
 Measurement height
 27 m
 Sampling frequency
 5 Hz
 Averaging time
 30 min
 Data logger
 DRM3a, TEAC, Japan
 Data storage
 Original data
 Raw data

 Observation items
  Levels/ Depth
 Global solar radiation(incoming)
 32 m Pyranometer (CM6F, Kipp & Zonen, Netherland)
 Global solar 
radiation (outgoing)
 29 m Pyranometer (CM6F, Kipp & Zonen, Netherland)
 Long-wave radiation(incoming) 
 32 m Infrared radiometer with fan (PIR, Eppley, USA)
  Long-wave radiation(outgoing) 29 m Infrared radiometer (PIR, Eppley, USA)
 Net radiation
 PPFD (incoming)
 32 m Quantum sensor (LI-190, LI-COR, USA)
 PPFD (outgoing)
 29 m Quantum sensor (LI-190, LI-COR, USA)
 Direct / diffuse radiation
 Direct / diffuse PPFD
 Air temperature
 32, 27, 23, 21,  19, 14, 9, 3m Platinum resistance thermometer (HMP45D,  VAISALA, Finland)
 Humidity 32, 27, 23, 21,  19, 14, 9, 3m Capacitive hygrometer (HMP45D, VAISALA,  Finland)
 Soil temperature
 0, 0.02, 0.05,  0.1, 0.25, 0.5m thermocouple
 Soil heat flux
 0.05 m 
 MF81 (EKO, Japan)
 Soil water 
 Wind speed
 32, 27, 23m Sonic anemometer (WMT52, Vaisala, Finland)
 Wind direction
 32 m Vane (A-802, YOKOGAWA, Japan)
 25, 2m Barometer (PTB210 at 25m and PTB-100 at 2m,  VAISALA, Finland)
 Precipitation 1 m Tipping bucket raingauge with heater (B071-00,  YOKOGAWA, Japan)
 23, 19, 13, 9, 3  m CO2/H2O analyzer ( LI-6262 LI-COR, USA)
 Soil respiration
 Photosynthesis Occasionally 
 Ecological investigation
 Tree heights, stand density, diameter,  biomass (Ohtsuka et al., 2001, Veg.  Sci.,vol.20, p.43-54)
Observation Period and data Availability
 Measurement Period
 August 1999 to present
 Measurement Frequency
 Data Availability
 FxMt 2000, SoRe 2003 - 2004  on AsiaFlux Database
 [General, Flux and Meteorology]
 Yasuko Mizoguchi (pop128 [at]
 [General] Yuichiro Nakai (nakaiyui [at]
 [General and Flux]Yoshikazu Ohtani (ohtan03 [at]
 [Flux and Meteorology] Satoru Takanashi (tnsatoru [at]
 Department of meteorological Environment,Forestry and Forest  Products Research Institute 1 Matsunosato, Tsukuba, Ibaraki
 305-8687,  Japan
 Tel:+81-29-873-3211 Fax:+81-29-874-3720
 [General] Takashi Nakano (nakano[at]
 Yamanashi Institute of Environmental Sciences5597-1 Kami-Yoshida,  Fuji-Yoshida, Yamanashi 403-0005, Japan.
 Tel: +81-555-72-6193 Fax: +81-555-72-6206
 [Soil respiration and NPP Survy]
 Toshiyuki Ohtsuka  (toshi [at]
 [Flux and Meteorology] Kenzo  Kitamura(kitamu93[at]
 [Flux] Hiroki Iwata (hiroki[at] 
 [Soil respiration] Taisuke Yasuda (yasuda[at]  [Photosynthesis and respiration] Yukihiro Chiba (chiro[at]  
 [Photosynthesis] Han Qingmin (qhan[at]
 [Trunk respiration] Tatsuro Kawasaki (kawasaki[at]
 Tower, Electrical power (100V AC 50Hz), Telephone
 Research Fund
 Global Environment Research Fund B-3 (FY2000-2002) by Ministry of  Environment, Japan

 Global Environment Research Fund S-1 (FY2003-2006) by Ministry of  Environment, Japan

 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

 Research Fund (Evaluation, Adaptation and Mitigation of Global  Warming in Agriculture, Forestry and Fisheries´╝ÜResearch and  Development) by Ministry of Agriculture, Forestry and Fisheries of  Japan

 Global Environment Research Account for National Institutes (Long-  term Monitoring of Carbon Flux and Promotion of Data Network in Asian  Terrestrial Ecosystems) by Ministry of Environment, Japan
Iwata, H., Asanuma, J., Ohtani, Y., Mizoguchi, Y., Yasuda, Y. (2009) Vertical Length Scale of Transporting Eddies for sensible Heat in the Unstable Roughness Sublayer Over a Forest Canopy. Journal of Agricultural Meteorology, 65(1):1-9

Ohtani, Y., Saigusa, N., Yamamoto, S., Mizoguchi, Y., Watanabe, T., Yasuda, Y., Murayama, S. (2005) Characterisitics of CO2 fluxes in cool-temperate coniferous and deciduous broadleaf forests in Japan, Phyton, 45, 73-80.

Ohtani, Y., Mizoguchi, Y., Watanabe, T., Yasuda, Y., Okano, M. (2001) Seasonal change of CO2 flux above an evergreen needle leaf forest in temperate region, Fujiyoshida, Japan. CGER Report, M011-2001, 129-132.

Ohtani, Y., Mizoguchi, Y., Watanabe, T., Yasuda, Y. (2005) Parameterization of NEP for gap-filling in a cool-temperate coniferous forest in Fujiyoshida, Japan, Journal of Agricultural Meteorology, 60(5) 769-772.

Ohtsuka, T., Goto, I., Sugita, M., Nakajima, T., Ikeguchi, H. (2003) The origin of red pine forest on Ken-marubi lava flow on the lower slopes of Mt. Fuji, Vegetation Science, 20, 43-54 (in Japanese with English Summary) .

Han Q., Kawasaki T., Nakano T., Chiba Y. (2008) Leaf-age effects on seasonal variability in photosynthetic parameters and its relationships with leaf mass per area and leaf nitrogen concentration within a Pinus densiflora crown. Tree Physiology, 28, 551?558.

Han, Q., Kawasaki, T., Katahata, S., Mukai, Y. and Chiba, Y. (2003) Horizontal and vertical variations in photosynthetic capacity in a Pinus densiflora crown in relation to leaf nitrogen allocation and acclimation to irradiance. Tree Physiology, 23(12), 851-857.

Han, Q., Kawasaki, T., Nakano T. and Chiba, Y. 2004. Spatial and seasonal variability of temperature responses of biochemical photosynthesis parameters and leaf nitrogen content within a Pinus densiflora crown. Tree Physiology, 24(7), 737-744.

Tanabe, H., Abe, Y., Nakano, T., Tange, T. (2006) Carbon and nitrogen changes in A0 horizons in a Pinus densiflora forest established on a Mt.Fuji lava flow. Japanese Journal of Forest Environment, 48(1), 1-8.

Tanabe, H., Abe, Y., Nakano, T. (2004) Nitrogen use by Pinus densiflora trees growing on a Mt.Fuji lava flow. Journal of Forest Research, 9, 249-254.Tanabe, H., Nakano, T., Mimura, M., Abe, Y., Makino, S. (2003) Biomass and net primary production of a Pinus Densiflora forest established on a lava flow of Mt.Fuji in central Japan. Journal of Forest Research, 8, 247-252.