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FFA: Fujisaki Farm Apple Orchard

FFA site photos

General site details

Site name Fujisaki Farm Apple Orchard
AsiaFlux site codeFFA
LocationFujisaki town, Aomori Prefecture, JAPAN
Position40º 39' 17" N, 140º 29' 7" E
Elevation20 m above sea level
Slope 0 degree
Terrain typeAlmost Flat
Area30,000m2
Fetch 50-200 m
Climate Cfa
Mean annual air temperature10.1 deg C
Mean annual precipitation 1183 mm
Vegetation typeDeciduous fruit tree orchard
Dominant Species (Overstory)Apple (Inter-row distance and between-tree distance of 7.0 m and 5.0m near the flux tower, in 2012)
Dominant Species (Understory)Kentucky bluegrass (mowed 5 times a year)
Canopy height4.0 m
Age32 years near the flux tower in 2012
LAI0-4 for apple tree depending on season
Soil typeAlluvial soil

Observation

Eddy Covariance method (CO2)

SystemOpen-path system
Wind speed Three-dimensional sonic anemometer-thermometer (DA600- 3T Probe TR-61C, KAIJO, Japan or 81000, Young, USA)
Air temperatureThree-dimensional sonic anemometer-thermometer (DA600- 3T Probe TR-61C, KAIJO, Japan or 81000, Young, USA)
Water vaporOpen-path analyzer (LI-7500, LI-COR, USA)
CO2 Open-path analyzer (LI-7500, LI-COR, USA)
Measurement height9.0 m
Sampling frequency10 Hz
Averaging time 30 min
Data logger From 2006 to 2012: (NR-1000, Keyence, Japan)
Data storage PC (from 2006-2012), FC (from 2012-)
Original dataRaw data

Meteorology

Observation items Levels/Depth Instrument
Global solar radiation(incoming) 9 m 4 component net radiometer (MR-50, EKO, Japan)
Global solar radiation (outgoing) 9 m 4 component net radiometer (MR-50, EKO, Japan)
Long-wave radiation(incoming) 9 m 4 component net radiometer (MR-50, EKO, Japan)
Long-wave radiation(outgoing) 9 m 4 component net radiometer (MR-50, EKO, Japan)
Net radiation - -
PPFD (incoming) -
PPFD (outgoing -
Direct / diffuse radiation -
Direct / diffuse PPFD -
Air temperature 2.5, 3.5, 4.5, 5.5, 7.0 and 9.0 m HMP45A, HMP233 and HMP155 (Vaisala, Finland)
Humidity 2.5, 3.5, 4.5, 5.5, 7.0 and 9.0 m HMP45A, HMP233 and HMP155 (Vaisala, Finland)
Soil temperature 0.01 and 0.03 m Platinum resistance thermometer
Soil heat flux 0.05 m Five thermopile heat flux sensors (MF-81,EKO,Japan)
Soil water content 0.3-0.6 m From 2011: Two tensiometers at 0.3m and another two at 0.6m (DIK-3021, Daiki, Japan)
Wind speed 4.5, 5.5, 7.0 and 9.0 m From 2006 to 2010: 3-cups anemometer (AF750, Makino, Japan) From 2012: Sonic anemometer (81000, Young, USA, and WMT52, Vaisala, Finland)
Wind direction 4.5.5.5, 7.0 m and 9.0 m From 2012: Sonic anemometer (81000, Young, USA, and WMT52, Vaisala, Finland)
Barometric pressure -
Precipitation -
CO2 concentration 4.5, 5.5, 7.0 and 9.0 m Infra red gas infraredanalyzer (LI820, Li-cor, USA)

Other

Soil respiration 5 days a month from 2006 to 2009 by open chamber method
Photosynthesis -
Ecological investigation -

Observation Period and Data Availability

Measurement PeriodFrom September 2006 to May 2015
Measurement Frequency Continuous
Data AvailabilityN/A

Contact

Daiyu Ito (daiyu [at] hirosaki-u.ac.jp) Teaching and Research Center for Bio-coexistence, Faculty of Agriculture and Life Science, Hirosaki University 7-1 Shitafukuro, Fujisaki, Fujisaki, Minamitsugaru, Aomori 038-3802 JAPAN

Sachinobu Ishida (ishida [at] hirosaki-u.ac.jp) Graduate School of Science and Technology, Hirosaki University 3 Bunkyo-cho, Hirosaki, Aomori 036-8561 JAPAN

Infrastructure

Tower (9m), Electrical power (100V AC)

Research Fund

Grant-in-Aid for Scientific Research from the Japanese Ministry of Education, Culture, Sports, Science and Technology