TWH:Taiwan Huisun Forest Station
General site detail (Updated 18 March 2014) Site name
| Taiwan Huisun Forest Station | AsiaFlux site code
| TWH
| | Location | Nantou, Taiwan | | Position | 121° 07' 33.60" E, 24° 04' 33.60" N | | Elevation | 2076 m above sea level | | Slope | North: 14.51° East: 8.53°
West: 22.85° South: 3.21° | Terrain type
| Mountain ridge | | Area | 10 ha | | Fetch | 5 km | | Climate | Humid subtropical climate (Cwa) | Mean annual air temperature
| 11 | Mean annual precipitation
| 2369 | Vegetation type
| Taiwan broadleaf forest | Domestic species (Overstory)
| - | Dominant species (Understory)
| - | Canopy height
| About 30 m | | Age | over 500 years | | LAI | 5-6 | Soil type
| Inceptisols |
ObservationsEddy Covariance method (CO 2) | System | Open-path system (CO2 flux, latent heat flux) | Wind speed
| 3D sonic anemometer
(CSAT3, Campbell Scientific, Inc., USA) | Air temperature
| Fine Wire Thermocouples
(FW05 Type E, Campbell Scientific, Inc., USA) | Water vapor
| Open path Gas Analyzer (LI-7500, Li-cor, USA) | | CO2 | Open path Gas Analyzer (LI-7500, Li-cor, USA) | Measurement height
| 60 m | Sampling frequency
| 10 Hz | Averaging time
| 30 min | Data logger
| CR1000 (Campbell, USA) | Data storage
| PC | Original data
| Raw data
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Meteorology Observation items
| Levels/ Depth
| Instrument
| Global solar radiation(incoming)
| 40 m | Precision Spectral Radiometer
(The Eppley Lab., Inc.) | Global solar
radiation (outgoing)
| 40 m | Precision Spectral Radiometer
(The Eppley Lab., Inc.) | Long-wave radiation(incoming)
| 40 m | Precision Spectral Radiometer
(The Eppley Lab., Inc.) | | Long-wave radiation(outgoing) | 40 m | Precision Spectral Radiometer
(The Eppley Lab., Inc.) | Net radiation
| 40 m | Precision Spectral Radiometer
(The Eppley Lab., Inc.) | PPFD (incoming)
| - | | PPFD (outgoing)
| - | | Direct / diffuse radiation
| - | | Direct / diffuse PPFD
| - | | Air temperature
| 20, 40, 60 m | FW05 Type E Fine Wire Thermocouples (Campbell Scientific, Inc.) | | Humidity | 20, 40, 60 m | HMP45C (Campbell Scientific, Inc.) | Soil temperature
| 0.04, 0.18, 0.70, 1.00 m | Model 107 Temperature Probe
(Campbell Scientific, Inc., USA) | Soil heat flux
| 0.15 m | HFT3 Soil Heat Flux Plate
(Campbell Scientific, Inc., USA) | Soil water
content
| 0.1, 0.2, 0.3, 0.4, 0.5 m | SEN12012 EasyAGII for Soil Volumetric Water Content Profile (Campbell Scientific, Inc., USA) | Wind speed
| 60 m
| 3D sonic anemometer
(CSAT3, Campbell Scientific, Inc., USA)
| Wind direction
| 60 m | 3D sonic anemometer
(CSAT3, Campbell Scientific, Inc., USA) | Barometric
pressure
| - | | | Precipitation | 0 m | Tipping bucket type Rain Gauge, No. 34-T (OTA KEIKI SEISAKUSHO CO., LTD., Japan) | CO2 concentration
| 60 m
| Open path Gas Analyzer (LI-7500, Li-cor, USA)
|
Other | Lysimeter | - | | Throughfall | - | | Sapflow | - | | Soil respiration | - |
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Observation Period and data Availability Measurement Period
| January 2011 to prestnt
| Measurement Frequency
| Continuous | Data Availability
| 2011-2013 in AsiaFlux Database
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Contact Ben-Jei Tsuang(tsuang [at] nchu.edu.tw)
Department of Environmental Engineering,National Chung Hsing University250, Kuo Kuang Rd., Taichung 402, Taiwan R.O.C.
Tel:+886-4-22851206 Fax:+886-4-22862587 |
Infrastructure| Tower, Electrical power (AC), Facilities for accommodation |
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