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DSX: Desert Steppe _ Xilingol Temperate Grassland Ecosystem
Research Station
                                     
General site detail (Updated 17 December 2007)
 Site name
 Desert Steppe _ Xilingol Temperate Grassland  Ecosystem Research Station
 AsiaFlux site code
 DSX
 Location the Left Sunite Banner, Inner Mongolia Autonomous  Region, China
 Position 44º 05' 20" N, 113º 34' 27" E
 Elevation 970 m a.s.l. 
 Slope 0º
 Terrain type
 High Plain
 Area 320,000 m2
 Fetch 115 m
 Climate Temperate Continental Climate
 Mean annual air temperature
 3.1 deg 
 Mean annual precipitation
 185 mm
 Vegetation type
 Desert steppe
 Domestic species (Overstory)
 Stipa breviflora, Stipa klemenzii, Allium  polyrrhizum, Salsola passerine, Reaumuria  soogorca
 Dominant species (Understory)
 Cleistogens squarrosa, C. songorica
 Canopy height
 25 cm
 Age N/A
 LAI 0.3
 Soil type
 Brown Calcic Soil

Observations
Eddy Covariance method (CO2)
 System Open-path system (2002.12-2003.12.31)
 Wind speed 
 CSAT3 3-D SONIC Anemometer
 Air temperature
 HMP45C, Vaisala, Helsinki, Finland
 Water vapor
 CS 7500 (LI-COR LI 7500 open-path CO2/H2O Analyzer)
 CO2 CS 7500 (LI-COR LI 7500 open-path CO2/H2O Analyzer)
 Measurement height
 2 m
 Sampling frequency
 10 Hz
 Averaging time
 30 min
 Data logger
 CR 5000
 Data storage
 2G PC card
 Original data
 Raw data

Meteorology
 Observation items
  Levels/ Depth
 Instrument 
 Global solar radiation(incoming)
 3 m CNR1, Kipp & Zonen. Corp., Delft, Holland
 Global solar 
radiation (outgoing)
 3 m CNR1, Kipp & Zonen. Corp., Delft, Holland
 Long-wave radiation(incoming) 
 3 m CNR1, Kipp & Zonen. Corp., Delft, Holland
  Long-wave radiation(outgoing) 3 m CNR1, Kipp & Zonen. Corp., Delft, Holland
 Net radiation
 3 m CNR1, Kipp & Zonen. Corp., Delft, Holland
 PPFD (incoming)
 3 m LI-190Sb，LI-COR Inc., Lincoln, NE, USA
 PPFD (outgoing)
 - 
 Direct / diffuse radiation
 - 
 Direct / diffuse PPFD
 - 
 Air temperature
 2, 4 m HMP45C, Vaisala, Helsinki, Finland
 Humidity 2, 4 m 
 HMP45C, Vaisala, Helsinki, Finland
 Soil temperature
 5,10,15,20,40,80  cm Thermistor (107, Campbell, USA)
 Soil heat flux
 8 cm 
 HFP01, Hukeflux Inc., Netherlands
 Soil water 
 content 
 5 cm 
CS616, Campbell Scientific Inc., USA
 Wind speed
 2, 4 m 
 014A，Campbell Scientific Inc., MS, USA
 Wind direction
 4 m 034B, Campbell Scientific Inc., MS, USA
 Barometric 
 pressure
 2 m CS 7500 (LI-COR LI 7500 CO2/H2O Analyzer)
 Precipitation 1 m 52203, RM Young Inc., Traverse City, MI, USA
 CO2 concentration
 - 
Other
 Soil respiration
 LI-8100 automated soil CO2 flux system
 Photosynthesis LI-6400R Portable Photosynthesis System
 Ecological investigation
 Biomass, Soil properties, Dominant plant  photosynthetic properties
 
Observation Period and data Availability
 Measurement Period
 October 2007 to present
 Measurement Frequency
 Continuous
 Data Availability
 N/A
Contact
  ZHOU (gszhou [at] ibcas.ac.cn)
 Institute of Botany, the Chinese Academy of Sciences 
 20 Nanxincun, Xiangshan, Haidian District, Beijing 100093, China 
 Tel: +86-10-62836268 Fax: +86-10-82595962
 http://gcte.ibcas.ac.cn/ [in Chinese]
 Yuhui WANG (yhwang [at] ibcas.ac.cn)
 Fengyu WANG (shdwangfy [at] yahoo.com.cn)
 Institute of Botany, the Chinese Academy of Sciences, 
 20 Nanxincun,  Xiangshan, Haidian District, Beijing 100093, China 
 OtherSongjian (songjianibcas.ac.cn)
 Calibration Information
 Calibrations for all instruments would be done once a year
 Infrastructure
 LI-7500 Open-path Eddy Covariance Systemand micrometeorological  towerand LI-8100 automated soil CO2 flux system
 Research Fund
 "Eco-hydrological processes and their interaction in semiarid region of  northern Chin" belonging to the project "Aridification in northern China  and human adaptation" funded by State Sciences and Technology  Committee (2006CB400502)

 "Carbon cycle model and adaptation countermeasures of emission  mitigation or sink enhancement for temperate grassland in China"  funded by National Science Foundation of China (90711001)

 
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