K04:Kubuqi forest plantation

General site detail (Updated 24 July 2007)
 Site name
 Kubuqi forest plantation
 AsiaFlux site code
 K04
 Location Kubuqi desert, Inner Mongolia, China
 Position 108º 41' 37'' E, 40º 32' 18'' N
 Elevation 1024 m above sea level
 Slope N/A
 Terrain type
 Flat
 Area More than 100 ha
 Fetch 1000 m 
 Climate Temperate continental climate
 Mean annual air temperature
 6.3 deg C 
 Mean annual precipitation
 300 mm 
 Vegetation type
 Poplar forest plantation
 Domestic species (Overstory)
 Poplar (Populus spp.)
 Dominant species (Understory)
 N/A
 Canopy height
 About 3-4 m
 Age 4 years
 LAI 0.23 (2006)
 Soil type
 Sandy soil

Observations
Eddy Covariance method (CO2)
 System Open- path system (CO2 flux, latent heat flux)
 Wind speed 
 Three-dimensional sonic anemometer
 (CSAT-3, Campbell Scientific Inc., Logan, UT, USA)
 Air temperature
 Three-dimensional sonic anemometer
 (CSAT-3, Campbell Scientific Inc., Logan, UT, USA)
 Water vapor
 Open-path CO2/H2O analyzers 
 (LI-7500, LI-COR, USA)
 CO2 Open-path CO2/H2O analyzers 
 (LI-7500  LI-COR, USA)
 Measurement height
 10 m
 Sampling frequency
 10 Hz
 Averaging time
 30 min
 Data logger
 CR5000 (CSI, USA)
 Data storage
 CF
 Original data
 Raw data

Meteorology
 Observation items
  Levels/ Depth
 Instrument 
 Global solar radiation(incoming)
 10 m CNR1 (Kipp and Zonen, Delft, Holland)
 Global solar 
radiation (outgoing)
 10 m CNR1 (Kipp and Zonen, Delft, Holland)
 Long-wave radiation(incoming) 
 10 m CNR1 (Kipp and Zonen, Delft, Holland)
  Long-wave radiation(outgoing) 10 m CNR1 (Kipp and Zonen, Delft, Holland)
 Net radiation
 10 m CNR1 (Kipp and Zonen, Delft, Holland)
 PPFD (incoming)
 8 m Li190SB,Li-Cor Inc., Lincoln, NE, USA
 PPFD (outgoing)
 - 
 Direct / diffuse radiation
 - 
 Direct / diffuse PPFD
 - 
 Air temperature
 2, 5, 10 m HMP-45C, Vaisala, Helsinki, Finland
 Humidity 2, 5, 10  m HMP-45C, Vaisala, Helsinki, Finland
 Soil temperature
 5, 10, 20 cm Model 107, Campbell Scientific Inc., 
 Logan, UT, USA
 Soil heat flux
 2 cm
 HFT-3, Campbell Scientific Inc., Logan, UT, USA
 Soil water 
 content 
 0-10 cm Campbell Scientific Inc., Logan, UT, USA
 Wind speed
 10 m CSAT-3, Campbell Scientific Inc., Logan, 
 UT, USA
 Wind direction
 10 m CSAT-3, Campbell Scientific Inc., Logan, 
 UT, USA
 Barometric 
 pressure
 - 
 Precipitation 10 m TE525, Texas Electronics, Texas, USA
 COconcentration
 10 m Li 7500, Li-Cor Inc., Lincoln, NE, USA
Other
 Soil respiration
 Li6400 (LI-COR)
 Photosynthesis Li6400 (LI-COR)
 Ecological investigation
 LAI (Li3000A, LI-COR)
 
Observation Period and data Availability
 Measurement Period
 from June 2005 to present
 Measurement Frequency
 Continuous
 Data Availability
 N/A
Contact
 Shiping Chen (spchen [at] ibcas.ac.cn)
 Institute of Botany, the Chinese Academy of Sciences20 Nanxincun,  Xiangshan, Haidian District, Beijing 100093, P. R. China
 Tel: +86-10-62836279; Fax: +86-10-62599059
 [Soil respiration and vegetation survey]
 Long Wei (johnweilong [at] ibcas.ac.cn)Institute of Botany, the Chinese  Academy of Sciences20 Nanxincun, Xiangshan, Haidian District,  Beijing 100093, P. R. China
Infrastructure
 Tower, Electrical power (AC), Accommodation
Research Fund
 The equipments of tower were funded by Institute of Botany, CAS; The  maintenance of tower was partly supported by "100 Talents" project of  CAS to Dr. Guanghui Lin and National Aeronautics and Space       Administration (NASA) Grant (NEWS 2004 NRA: NN-H-04-Z-YS-005-  N) of the Land-Cover / Land-Use Program
Calibration Information
 Open-path analyzers were calibrated twice per year with standard  COgases and a dew point generator (LI610, LI-COR).