SJP: Simotsuma Japanese pear orchard
General site details
| Site name | Simotsuma Japanese pear orchard |
|---|---|
| AsiaFlux site code | SJP |
| Location | Shimotsuma, Ibaraki, Japan |
| Position | 36º 12'40.9"N, 139º 56'50.6"E |
| Elevation | 21 m above sea level |
| Slope | 0-1 degree |
| Terrain type | Flat |
| Area | 4.5 ha |
| Fetch | 140-320 m |
| Climate | Temperate(Cfa) |
| Mean annual air temperature | 13.7degC (1979～2000) |
| Mean annual precipitation | 1216.8mm(1979～2000) |
| Vegetation type | Japanese pear orchard |
| Dominant Species (Overstory) | Japanese pear(Kosui,Hosui) |
| Dominant Species (Understory) | Clean Cultivation |
| Canopy height | 2 - 4 m |
| Age | 3-25 years (2007) |
| LAI | 3.5 |
| Soil type | Andosol |
Observation
Eddy Covariance method (CO2)
| System | Open-path system(CO2 flux, latent heat flux) |
|---|---|
| Wind speed | Three-dimensional sonic anemometer thermometer (R3,GILL) |
| Air temperature | Three-dimensional sonic anemometer thermometer (R3,GILL) |
| Water vapor | Open-path CO2/H2O analyzer(LI-7500,LI-COR) |
| CO2 | Open-path CO2/H2O analyzer(LI-7500,LI-COR) |
| Measurement height | 6 m |
| Sampling frequency | 10 Hz |
| Averaging time | 30 min |
| Data logger | CR1000 |
| Data storage | CF |
| Original data | Raw data |
Meteorology
| Observation items | Levels/Depth | Instrument |
|---|---|---|
| Global solar radiation(incoming) | 6 m | Radiometer (MR40,Eko,Japan) |
| Global solar radiation (outgoing) | 6 m | Radiometer (MR40,Eko,Japan) |
| Long-wave radiation(outgoing) | 6 m | Radiometer (MR40,Eko,Japan) |
| Long-wave radiation(outgoing) | 6 m | Radiometer (MR40,Eko,Japan) |
| Net radiation | 6 m | Radiometer (MR40,Eko,Japan) |
| PPFD (incoming) | 6 m | Quantum sensor(LI-190S,LI-cor) |
| PPFD (outgoing) | - | |
| Direct / diffuse radiation | - | |
| Direct / diffuse PPFD | - | |
| Air temperature | 7.0, 3.5 m | Platinum resistance thermometer and capacitive hygrometer(HMP45A,Vaisala) |
| Humidity | 7.0, 3.5 m | Platinum resistance thermometer and capacitive hygrometer(HMP45A,Vaisala) |
| Soil temperature | 0.05,0.1,0.3,0.5,0.7,1.0 m | Thermocouple |
| Soil heat flux | 0.05 m | Soil Heat Flux Plate(HFT3,Campbell) |
| Soil water content | 0.05,0.1,0.3,0.5,0.7,1.0 m | Water Content Reflectometer(CS615,Campbell) |
| Wind speed | 8.0,7.0,5.0,3.5,1.0 m | Cup anemometer(AF750,Makino) |
| Wind direction | 8.0 m | Wind vane(VF016,Makino) |
| Barometric pressure | - | |
| Precipitation | - | |
| CO2 concentration | - |
Other
| Soil respiration | occasionally |
| Photosynthesis | occasionally |
| Ecological investigation | LAI |
Observation Period and Data Availability
| Measurement Period | March 2007 to present |
|---|---|
| Measurement Frequency | Continuous |
| Data Availability | N/A |
Contact
Hiroyoshi Sugiura (hsugiura [at] affrc.go.jp)
Research Team for Effects of Global Warming on Fruit TreesNational Institute of Fruit Tree Science2-1
Fujimoto,Tsukuba,Ibaraki,305-8605,Japan
Tel: +81-29-838-6506 Fax: +81-29-838-6507
Infrastructure
Electrical power (AC)