[TKC]
Takayama evergreen coniferous forest site
  • Site Description
  • Observation
  • Researchers
  • Note

    • Eddy Correlation Method

    System Open-path system (CO2 flux, latent heat flux)
    Wind speed Three-dimensional sonic anemometer-thermometer (R3-50, Gill Instruments, UK)
    Air temperature Three-dimensional sonic anemometer-thermometer (R3-50, Gill Instruments, UK)
    Water Vapor Open Path CO2/H2O Gas Analyzer (LI-7500, LI-COR, USA)
    CO2 Open Path CO2/H2O Gas Analyzer (LI-7500, LI-COR, USA)
    Measurement height 31m
    Sampling frequency 10 Hz
    Averaging time 30 minutes
    Data logger PC
    Data storage HD
    Original data (Raw data or statistics) Raw data

    Meteorology

    Observation items Levels / Depth Instrument
    Global solar radiation (incoming) 30.5 m CM6B (Kipp & Zonen)
    Global solar radiation (outgoing) 29.7 m CM6B (Kipp & Zonen)
    Long-wave radiation (incoming) 30.5 m CG3 (Kipp & Zonen)
    Long-wave radiation (outgoing) 29.7 m CG3 (Kipp & Zonen)
    Net radiation - -
    PPFD (incoming) 30.5 m LI190SZ (LI-COR, USA )
    PPFD (outgoing) 29.7 m LI190SZ (LI-COR, USA )
    PPFD (Forest floor) six point LI-190SB (LI-COR, USA), IKS-27 (Koito, Japan), IKS-25 (Koito, Japan)
    Direct/diffuse radiation - -
    Direct/diffuse PPFD - -
    Air temperature 30.2, 22.8, 18.4, 14.7, 10.6, 6.5, 3.6, 1.3 m Platinum resistance thermometer with ventilated radiation shields (HMP45A, VAISALA, Finland)
    Humidity 30.2, 22.8, 18.4, 14.7, 10.6, 6.5, 3.6, 1.3 m Capacitive hygrometer with ventilated radiation shields (HMP45A, VAISALA, Finland)
    Surface temperature 30, 22, 2 m Infrared Thermometer (MI-710, PTEX, Siga, Japan)
    Soil temperature 0.05, 0.1, 0.15, 0.2, 0.4 m Thermistor (107, Campbell, USA)
    Soil heat flux N/A -
    Soil water content 0.05, 0.1, 0.15, 0.2, 0.4 m TDR sensor (CS616, Campbell, USA)
    Wind speed 31, 23.4, 6.5, 2 m 3-cups anemometer (A100L2, Vector, UK), Sonic anemometer (Windsonic, Gill instruments, UK)
    Wind direction 30.9, 6.5, 2 m Wind vane (W200P, Vector, UK), Sonic anemometer (Windsonic, Gill instruments, UK)
    Barometric pressure 1.5 m PTB210 (Vaisala, Finland)
    Precipitation 30.9 m Tipping bucket rain gauge with heater (RH-5A, Ikeda Keiki, Japan)
    snow depth 3.32 m Ultrasonic distance sensor (SR-50, Campbell, USA)
    CO2 concentration 30.2, 22.8, 18.4, 14.7, 10.6, 6.5, 3.6, 1.3 m CO2 gas analyzer (LI-820, LICOR, USA)

    Other

    Soil respiration Continues (automated chambers) by CO2 gas analyzer (LI-820, LI-COR, USA)
    Photosynthesis N/A
    Ecological Investigation Tree heights (2005), Crown projection (2005), Diameter of Breast Height, Biomass (2004 to present; every year), Litter fall (about every two months)
    Water cycle within canopy Through fall (twenty four points), Stem flow (three points)
    Remote sensing Fish-eye photographs (canopy, sky) and Radiative spectrum (income, outcome) by PEN (Phenological Eyes Network) system. Fish-eye photographs at ninety six points on the forest floor (November 7, 2006)