TSX: Typical Steppe _ Xilingol Temperate Grassland  Ecosystem
Research Station

General site detail (Updated 17 December 2007)
 Site name
 Typical Steppe _ Xilingol Temperate Grassland  Ecosystem Research Station
 AsiaFlux site code
 TSX
 Location Approximately 24 km northeast of Xilinhot city,  China
 Position 44º 08' 03" N, 116º 19' 43" E (GPS)
 Elevation 1030 m a.s.l. (GPS)
 Slope 0º
 Terrain type
 High Plain
 Area 12 km2
 Fetch 115 m
 Climate Temperate Continental Climate
 Mean annual air temperature
 2.0 °C
 Mean annual precipitation
 290 mm
 Vegetation type
 Stipa krylovii grassland
 Domestic species (Overstory)
 Stipa krylovii, Leymus chinense
 Dominant species (Understory)
 Koeleria cristata , Carex duriuscula, Artmisia  frigada, Aluum mongolicum, Cleistogenes  squarrosa, salsola collina
 Canopy height
 35 cm
 Age N/A
 LAI 1
 Soil type
 Chestnut soil

Observations
Eddy Covariance method (CO2)
 System Open-path system
 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
 CR5000
 Data storage
 1G 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(outgoing) 
 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    107L, Campbell Scientific Inc., USA
 Soil heat flux
 8 cm  HFP01, Hukseflux Inc., Netherlands
 Soil water 
 content 
 10, 20, 30,  40  cm  CS616, Campbell Scientific Inc., USA
 Wind speed
 2, 4 m 014C, 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
 COconcentration
 -
 
Other
 Soil respiration
 LI-8100 automated soil CO2 flux system
 Photosynthesis LI-6400R Portable Photosynthesis  System(Li-cor, Lincoln, NE, USA)
 Ecological investigation
 Biomass, Height, Leaf area index, Soil  physical and chemistry properties
 
Observation Period and Data Availability
 Measurement Period
 August 2003 to present
 Measurement Frequency
 Continuous
 Data Availability
 N/A
Contact
 Guangsheng ZHOU (gszhou [at] ibcas.ac.cn)
 Yuhui WANG (yhwang [at] ibcas.ac.cn)
 Bingrui JIA(jiabingrui [at] ibcas.ac.cn)
 Key Laboratory of Vegetation and Environmental Change, Institute of  Botany, the Chinese Academy of Sciences, 20 Nanxincun, Xiangshan,  Haidian District, Beijing 100093, China  
Calibration Information
 Calibrations for all instruments would be done once a year  
Infrastructure
 Open path eddy covariance system, Micrometeorological system  
Research Fund
 'Integrated observation and simulation on vegetation-atmosphere   interactions over typical terrestrial ecosystems' funded by National  Natural Science Foundation of China (40625015)
 
"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)

"Eco-hydrological processes and their interaction in semiarid region of  northern China" belonging to the project "Aridification in northern China  and human adaptation" funded by State Sciences and Technology  Committee (2006CB400502)