KCR: Kon Chu Rang forest
General site details
| Site name | Kon Chu Rang forest |
|---|---|
| AsiaFlux site code | KCR |
| Location | Kon Chu Rang Nature Reserve Son Lang village, K’Bang district, Gia Lai province |
| Position | 14°29'58.9"N 108°32'43.9"E |
| Elevation | 1051 m above sea level |
| Slope | < 3° |
| Terrain type | Plateau |
| Area | Extensive |
| Fetch | 375 m (90%), 140 m (peak) |
| Climate | Aw, Tropical savanna with dry winter |
| Mean annual air temperature | 20.0 (2022-2023) °С |
| Mean annual precipitation | 2611 mm (2022--2023) |
| Vegetation type | Mid-mountain plydominant high forest |
| Dominant Species (Overstory) | Protium serratum (Burseraceae), Endospermum chinensis (Euphorbiaceae), Dialium cochinchinensis (Fabaceae), Magnolia praecalva (Magnoliaceae), Choerospondias axillaris (Anacardiaceae), Dacricarpus imbricatus, Dacrydium ellatum (Podocarpaceae). Middle canopy: Polyosma blaensis (Escalloniaceae), Quercus fleuryi (Fagaceae), Rehderodendron indochinensis (Styracaceae), Adinandra caudata (Theaceae) |
| Dominant Species (Understory) | Popowia cambodiana (Annonaceae), Lasianthus spp., Ixora sp., (Rubiaceae), Tabernaemontana sp. (Apocynaceae), Ardisia sp. (Primulaceae) |
| Canopy height | 28 m (max. 33 m) |
| Age | Primary forest |
| LAI | Not measured |
| Soil type | Ferralitic soil (orthic acrisols, 7.5YR 4/4 -- 10YR 3/3 Munsell scale) |
Observation
Eddy Covariance method (CO2)
| System | Enclosed-path system (CO2 flux, latent heat flux) |
|---|---|
| Wind speed | Three-dimensional sonic anemometer (WindMaster Pro, Gill inatruments) |
| Air temperature | Three-dimensional sonic anemometer (WindMaster Pro, Gill inatruments) |
| Water vapor | Enclosed-path CO2/H2O analyzer (LI-7200, LI-COR) |
| CO2 | Enclosed-path CO2/H2O analyzer (LI-7200, LI-COR) |
| Measurement height | 50 m |
| Sampling frequency | 10 Hz |
| Averaging time | 30 min |
| Data logger | LI-7550 Analyzer Interface Unit / SmartFlux2 |
| Data storage | USB drive, FTP upload |
| Original data | Raw data |
Meteorology
| Observation items | Levels/Depth | Instrument |
|---|---|---|
| Global solar radiation (incoming) | 50 m | Photodiode pyranometer (LI-200R, LI-COR) |
| Net radiation | 50 m | 1-component net radiometer (NRLite, K&Z) |
| PPFD (incoming) | 52 m | Photodiode quantuum sensor (LI-190R, LI-COR) |
| Air temperature | 45, 2 m | Platinum resistance thermometer and capacitive Hygrometer (HMP155, Vaisala) |
| Humidity | 45, 2 m | Platinum resistance thermometer and capacitive Hygrometer (HMP155, Vaisala) |
| Soil temperature | 8 cm (six points) | Thermistor (7900-180 temperature probe, LI-COR); HydraProbeII (Stevens) |
| Soil heat flux | 0.05 m | Heat flux plate: PHF-01, REBS |
| Soil water content | 0.08 m | Coaxial Impedance Dielectric Reflectometry sensor (HydraProbeII, Stevens) |
| Wind speed | 50 m | Sonic anemometer (WindMaster Pro, Gill inatruments) |
| Wind direction | 50 m | Sonic anemometer (WindMaster Pro, Gill inatruments) |
| Barometric pressure | 50 m | Analyser interface unit built-in barometer (LI-7550, LI-COR) |
| Precipitation | 50 m | Tipping-bucket rain gauge (TE-525M, Texas Instruments) |
| CO2 concentration | 50 m | Enclosed-path CO2/H2O analyzer (LI-7200, LI-COR) |
Observation Period and Data Availability
| Measurement Period | July 2022 -- present |
|---|---|
| Measurement Frequency | Continuous |
| Data Availability |
Contact
[PI – VN side]
Dinh Ba Duy (duydb.vrtc[at]gmail.com)
Joint Vietnam-Russia Tropical Science and Technology Research Center
Institute of Tropical Ecology
63 Nguyen Van Huyen str., Nghia Do ward, Hanoi city, 100000, Vietnam
Tel: (+8424) 38363906
[PI – RU side]
Julia Kurbatova (kurbatova.j[at]gmail.com)
A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences
V.N. Sukachev Laboratory of Biogeocenology Leninsky Prospekt, 33 Moscow, 119071, Russia
Tel:+7(903)710-3744
[Fluxes, Meteorology, Instrumentation]
Vitaly Avilov (vitavilov[at]gmail.com) [Fluxes, Meteorology, Instrumentation]
A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences
V.N. Sukachev Laboratory of Biogeocenology Leninsky Prospekt, 33 Moscow, 119071, Russia
Tel:+7(903)262-6295
Dinh Vu Anh Tu (anhtu2893[at]gmail.com)
Natalia Myslitskaia (myslitskaya[at]gmail.com)
Fedor Amirov (amirow-fedor[at]mail.ru)
Ngo Thanh Dat (datdotq95[at]gmail.com)
Infrastructure
Tower (49.9m), ancillary building (2x4m), solar power, 2G cellular communication, accomodation (4 km away)
Research Fund
Joint Vietnam-Russia Tropical Science and Technology Research Center
Calibration Information
● LI-7200 – annual CO2/H2O zero using molecular sieve scrubber (31022 Zero Air Generator, Campbell Scientific), annual CO2 span – using reference gas (616ppm CO2 in air)
● HMP155 – annual 2-point humidity adjustment by ~35% and ~85% points using reference capacitive hygrometer DV2-TS (Microfor, Russia), 1-point temperature adjustment using reference platinum thermometer PTSV-6-Km-3 (Microfor, Russia)
● TE525M – annual field check using Rain Gauge Calibrator (52260, RM Young), 500ml, .50 orifice
● LI200R – annual field matching with reference pyranometer (SR30D2, Hukseflux)
● LI190R – annual field matching with reference quantum sensor (LI190R, LI-COR)
● LI7550 integrated barometer – annual comparison with reference absolute pressure sensor PDE-020I-DA (Elemer, Russia)