JAS:Jinzhou Agricultural Ecosystem ResearchStation
                                 
General site detail (Updated 17 December 2007)
 Site name
 Jinzhou Agricultural Ecosystem Research Station
 AsiaFlux site code
 JAS
 Location Yingtun, Taihe District, Jinzhou,
 Liaoning province, China
 Position 41º 49' N, 121º 12' E (GPS)
 Elevation 17 m a.s.l. 
 Slope 0º
 Terrain type
 Alluvial plain
 Area Maize cropping zone
 Fetch 200 m
 Climate Continental Semi-arid monsoon climate of warm  temperate zone
 Mean annual air temperature
 9.5 deg 
 Mean annual precipitation
 565.9 mm
 Vegetation type
 Cropland
 Domestic species (Overstory)
 Maize
 Dominant species (Understory)
 -
 Canopy height
 3.0 m
 Age 1
 LAI 5.1
 Soil type
 Typical brown 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
 3.5 m
 Sampling frequency
 10 Hz
 Averaging time
 30 min
 Data logger
 CR 5000, Campbell, USA
 Data storage
 1G PC card
 Original data
 Raw data

Meteorology
 Observation items
  Levels/ Depth
 Instrument 
 Global solar radiation(incoming)
 3.5 m CNR1, Kipp & Zonen. Corp., Delft, Holland
 Global solar 
radiation (outgoing)
 3.5 m CNR1, Kipp & Zonen. Corp., Delft, Holland
 Long-wave radiation(incoming) 
 3.5 m CNR1, Kipp & Zonen. Corp., Delft, Holland
  Long-wave radiation(outgoing) 3.5 m CNR1, Kipp & Zonen. Corp., Delft, Holland
 Net radiation
 3.5 m CNR1, Kipp & Zonen. Corp., Delft, Holland
 PPFD (incoming)
 4 m LI-190Sb,LI-COR Inc., Lincoln, NE, USA
 PPFD (outgoing)
 - 
 Direct / diffuse radiation
 - 
 Direct / diffuse PPFD
 - 
 Air temperature
 3.5, 5.0 m HMP45C, Vaisala, Helsinki, Finland
 Humidity 3.5, 5.0 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, Hukeflux Inc., Netherlands
 Soil water 
 content 
 10,20,30,40 cmCS616, Campbell Scientific Inc., USA
 Wind speed
 3.5, 5.0 m 014A,Campbell Scientific Inc., MS, USA
 Wind direction
 3.5, 5.0 m 034B, Campbell Scientific Inc., MS, USA
 Barometric 
 pressure
 3.5 m CS 7500 (LI-COR LI 7500 CO2/H2O Analyzer)
 Precipitation 70 cm 52203, RM Young Inc., Traverse City, MI, USA
 COconcentration
 - 
Other
 Soil respiration
 Chamber method
 Photosynthesis LI-6400R Portable Photosynthesis System
 Ecological investigation
 Biomass, Height, Leaf area index, 
 Soil features
 
Observation Period and data Availability
 Measurement Period
 October 2004 to present
 Measurement Frequency
 Continuous
 Data Availability
 N/A
Contact
  Guangsheng 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]
  Rongping LI (rongpingli [at] 163.com)
  66 Wenhua Road, Shenhe District, Shenyang 110016, 
  Liaoning Province, China
  Qingyu JIA (beyond.22 [at] 126.com)
  66 Wenhua Road, Shenhe District, Shenyang 110016, 
  Liaoning Province, China
  Songjian (songjian [at] ibcas.ac.cn)
 Calibration Information
 Calibrations for all instruments would be done once a year
 Research Fund
 "Integrated observation and simulation on vegetation-atmosphere  interactions over typical terrestrial ecosystems' funded by National  Natural Science Foundation of China (40625015)

 'Aridification in northern China and human being adaptation' funded by  State Science and Technology Committee (2006CB400502)

 'Mechanism of environmental pollution and ecological rehabilitation in  Northeast industry base' funded by State Science and Technology  Committee (2004CB418507-1)