DFR: Dry Dipterocarp Forest Flux Ratchaburi
General site details
| Site name | Dry Dipterocarp Forest Flux Ratchaburi |
|---|---|
| AsiaFlux site code | DFR |
| Location | KMUTT Ratchaburi Campus, Rang Bour, Chombueng, Ratchaburi Province, Thailand |
| Position | 13º35’ N, 99º30' E |
| Elevation | 118 m |
| Slope | Negligible |
| Terrain type | Flat |
| Area | 88.9 ha |
| Fetch | N/A |
| Climate | Tropical monsoon climate |
| Mean annual air temperature | 26.51ºC (2008-2009) |
| Mean annual precipitation | 1,125.75 mm (2009-2010) |
| Vegetation type | Dry dipterocarp forest |
| Dominant Species (Overstory) | Dipterocarpus intricatu, D. obtusifolius , D. tuberculatus, Shorea obtuse, and S. siamensis |
| Dominant Species (Understory) | N/A |
| Canopy height | 5-7 m |
| Age | Regenerated forest, mostly young of 5-7 years old (measurement 2009) |
| LAI | N/A |
| Soil type | Losmy sand |
Observation
Eddy Covariance method (CO2)
| System | Open-path system |
|---|---|
| Wind speed | Three-dimensional sonic anemometer-thermometer (Campbell CSAT3) |
| Air temperature | Three-dimensional sonic anemometer-thermometer (Campbell CSAT3) |
| Water vapor | Open-path CO2/H2O analyzer (LI-7500, LI-COR) |
| CO2 | Open-path CO2/H2O analyzer (LI-7500, LI-COR) |
| Measurement height | 8 m |
| Sampling frequency | 10 Hz |
| Averaging time | 30 min |
| Data logger | CR1000, CR23X, and CR10X, Campbell Sci. |
| Data storage | PC and SSD |
| Original data | Raw data |
Meteorology
| Observation items | Levels/Depth | Instrument |
|---|---|---|
| Global solar radiation(incoming) | 11, 8 m | CM11 and CNR1, Kipp and Zonen, Delft, Holland |
| Global solar radiation (outgoing) | 8 m | CNR1, Kipp and Zonen, Delft, Holland |
| Long-wave radiation(outgoing) | 8 m | CNR1, Kipp and Zonen, Delft, Holland |
| Long-wave radiation(outgoing) | 8 m | CNR1, Kipp and Zonen, Delft, Holland |
| Net radiation | 8 m | CNR1, Kipp and Zonen, Delft, Holland |
| PPFD (incoming) | 10 m | LI-190,Li-Cor Inc., Lincoln, NE, USA |
| PPFD (outgoing) | - | |
| Direct / diffuse radiation | - | |
| Direct / diffuse PPFD | - | |
| Air temperature | 10 m | Campbell HMP45C |
| Humidity | 10 m | Campbell HMP45C |
| Soil temperature | - 6 cm | Campbell TCAV Averaging soil thermocouple |
| Soil heat flux | - 8 cm | HFP01, Campbell Scientific Inc., Logan, UT, USA |
| Soil water content | - 2.5 cm | CS616, Campbell Scientific Inc., Logan, UT, USA |
| Wind speed | 8 m | CSAT-3, Campbell Scientific Inc., Logan, UT, USA |
| Wind direction | 8 m | CSAT-3, Campbell Scientific Inc., Logan, UT, USA |
| Barometric pressure | - | |
| Precipitation | 11 m | TE525, Texas Electronics, Texas, USA |
| CO2 concentration | 8 m | Li 7500, Li-Cor Inc., Lincoln, NE, USA |
| H2O concentration | 8 m | Li 7500, Li-Cor Inc., Lincoln, NE, USA |
Other
| Soil respiration | Continuous automated static close chamber |
| Photosynthesis | - |
| Ecological investigation | Tree height, diameter, root growth and turnover, phenology, LAI and canopy structure, litter dynamics, sap flow velocity, water potential in tree and soil, soil water content, acid deposition (SO2) all will be started in 2009 |
Observation Period and Data Availability
| Measurement Period | Measurement Period from May 2008 to present |
|---|---|
| Measurement Frequency | Continuous |
| Data Availability | 2008-2011 in AsiaFlux Database (Soil respiration) |
Contact
Amnat Chidthaisong (amnat_c [at] jgsee.kmutt.ac.th) The Joint Graduate School of Energy and Environment (JGSEE), and Center of Excellence on Energy Technology and Environment, King Mongkut’s University of Technology Thonburi (KMUTT), Earth System Science Office (ESS-KMUTT Project), 126 Pracha-Utit Rd., Tungkru, Bangkok 10140, Thailand. Tel. (66) 2470-8309-10 # 4151, 4119 Fax: (66) 2872-9805
[Flux and micrometeorology] Montri Sanwangsri (montri.san [at] kmutt.ac.th) The Joint Graduate School of Energy and Environment, King Mongkut’s University of Technology Thonburi (JGSEE-KMUTT), Earth System Science Office (ESS-KMUTT Project), 126 Pracha-Utit Rd., Tungkru, Bangkok 10140, Thailand. Tel. (66) 2470-8309-10 # 4151, 4119 , Fax: (66) 2872-9805
[Soil respiration] Phongthep Hanpattanakit (i_am_topten [at] yahoo.com) Faculty of Environmental Culture and Ecotourism, Srinakharinwirot University, 114 Sukhumvit 23, Bangkok 10110, Thailand Tel. (66) 2649-5000 , Fax: (66) 2260-3275
[Methane emission] Srintornthep Towprayoon (sirin [at] jgsee.kmutt.ac.th) The Joint Graduate School of Energy and Environment, King Mongkut’s University of Technology Thonburi (JGSEE-KMUTT), Earth System Science Office (ESS-KMUTT Project), 126 Pracha-Utit Rd., Tungkru, Bangkok 10140, Thailand. Tel. (66) 2470-8309-10 # 4151, 4119 , Fax: (66) 2872-9805
[Flux and micrometeorology] Andrew McMillan (a.mcmillan [at] niwa.co.nz) National Institute of Water & Atmospheric Research Ltd 301 Evans Bay Parade, Greta Point, Wellington 6021, New Zealand
Research Fund
JGSEE-KMUTT ESS-KMUTT The Thailand Research Fund (TRF) (2008-2010)