SKT: Southern Khentei Taiga
General site details
| Site name | Southern Khentei Taiga |
|---|---|
| AsiaFlux site code | SKT |
| Location | 25km NE of Mongonomorit, Mongolia |
| Position | 48º 21' 6.7" N, 108º 39'15.6" E (World Geodetic System 1984) |
| Elevation | 1630 m above sea level (World Geodetic System 1984) |
| Slope | 5 degree to the west |
| Terrain type | flat top of a hill |
| Area | - |
| Fetch | 750-800 m |
| Climate | cold and semi-arid (snow - winter dry - cool summer [Dwc] (Kottek et al. 2006)) |
| Mean annual air temperature | -2.9 ºC |
| Mean annual precipitation | 282 mm ( at Mongenmoryt station) |
| Vegetation type | larch forest |
| Dominant Species (Overstory) | Larix sibirica, Batula platyphylla |
| Dominant Species (Understory) | Carex Spp., Koeleria spp., Chamaenerion angustifolium |
| Canopy height | 20 m |
| Age | 70-150 years |
| LAI | Max. 2.2-2.7 |
| Soil type | spodosol (seasonal cryosol) |
Observation
Eddy Covariance method (CO2)
| System | Open-path system (CO2 flux, latent heat flux) |
|---|---|
| Wind speed | Kaijo SAT-540 |
| Air temperature | Kaijo SAT-540 |
| Water vapor | Open path(LI-7500, Li-Cor, USA) |
| CO2 | Open path(LI-7500, Li-Cor, USA) |
| Measurement height | 30 m above the ground |
| Sampling frequency | 10 Hz |
| Averaging time | 30 min |
| Data logger | CR-23x (Campbell, USA) |
| Data storage | CR-23x (Campbell, USA) |
| Original data | statistics only |
Meteorology
| Observation items | Levels/Depth | Instrument |
|---|---|---|
| Global solar radiation(incoming) | 29 m | Four-component net radiometer,CNR1 ( Kipp & Zonen ) |
| Global solar radiation (outgoing) | 29 m | Four-component net radiometer,CNR1 ( Kipp & Zonen ) |
| Long-wave radiation(incoming) | 29 m | Four-component net radiometer,CNR1 ( Kipp & Zonen ) |
| Long-wave radiation(outgoing) | 29 m | Four-component net radiometer,CNR1 ( Kipp & Zonen ) |
| Net radiation | - | |
| PPFD (incoming) | - | |
| PPFD (outgoing) | - | |
| Direct / diffuse radiation | - | |
| Direct / diffuse PPFD | ||
| Air temperature | 30 m | HMP-45D, Vaisala Inc |
| Humidity | 30 m | HMP-45D, Vaisala Inc |
| Soil temperature | -0.05, -0.1, -0.2, -0.3, -0.5, -0.7, -1 m | C-PT, CLIMATEC Inc |
| Soil heat flux | -0.05, -0.1m | PHF-1.1, REBS, Inc |
| Soil water content | -0.1, -0.2, -0.3, -0.7, -1 m | CS616, Campbell Scientific |
| Wind speed | - | |
| Wind direction | - | |
| Barometric pressure | - | Campbell PTB210 |
| Precipitation | - | CYG-52202, RM Young Company |
| CO2 concentration | - | |
| H2O concentration | - |
Other
| Soil respiration | - |
| Photosynthesis | - |
| Ecological investigation | - |
Observation Period and Data Availability
| Measurement Period | from March 2003 to present |
|---|---|
| Measurement Frequency | Continuous |
| Data Availability | 2003-2006 in AsiaFlux Database |
Contact
Jun Asanuma (asanuma [at]suiri.tsukuba.ac.jp)
Terrestrial Environment Research CenterUniversity of Tsukuba Tsukuba, Ibaraki 305-8577, Japan
Tel:+81-298-53-6704 Fax:+ 81-298-53-6704
Sheng-Gong Li (lisg [at] igsnrr.ac.cn)
Synthesis Research Center of Chinese Ecosystem Research Network (CERN)Institute of Geographic Sciences and Natural Resources Research (IGSNRR),Chinese Academy of Sciences (CAS),
DaTun Road A11, Anwai Street , ChaoYang DistrictBeijing, China PR, 100101
Tel: +86-10-64889039
Gombo Davaa (watersecta [at] yahoo.com)
Institute of Meteorology and HydrologyHudaldannyi St.-5,
Ulaanbaatar 46, Mongolia
+976-11-312765+976-11-326611
Infrastructure
Tower
Research Fund
The rangelands atmosphere-hydrosphere-biosphere interaction study experiment in north-eastern Asia (RAISE) project through financial support from Japan Science and Technology Agency (2003-2006)
Calibration Information
Calibration once a year.
Publication
Sugita, M., Asanuma, J., Tsujimura, M., Mariko, S., Lu, M., Kimura, F.,Azzaya, D., and Adyasuren, T., 2007: An overview of the rangelands atmosphere-hydrosphere-biosphere interaction study experiment in northeastern asia (RAISE). Journal of Hydrology, Vol. 333, pp. 3-20.
S.-G. Li, J.Asanuma, A.Kotani, W.Eugster, G.Davaa, D.Oyunbaatar， M.Sugita(2005):Year-round measurements of net ecosystem CO2 flux over a montane larch forest in Mongolia,Journal of Geographic Research-Atmosphere,110, D09303, doi:10.1029/2004JD005453