CBF: Boreal Forest _ Chinese Boreal Forest Ecosystem  
  Research Station

General site detail (Updated 17 December 2007)
 Site name
 Boreal Forest _ Chinese Boreal Forest Ecosystem  Research Station
 AsiaFlux site code
 CBF
 Location Huzhong National Nature Reserve in Heilongjiang  Province, China
 Position 51º 46' 52" N, 123º 01' 04" E (GPS)
 Elevation 773 m a.s.l. (GPS)
 Slope 0º
 Terrain type
 Low Mountain Area
 Area N/A
 Fetch 1000m
 Climate Continental monsoon climate
 Mean annual air temperature
 - 4.4°C
 Mean annual precipitation
 481.6 mm
 Vegetation type
 Boreal forest
 Domestic species (Overstory)
 Larix gmelinii, Betula platyphylla Suk. , Pinus  sylvestris var. mongolica.
 Dominant species (Understory)
 (shrub) Ledum palustre, Vaccinium vitis-idaea,  Rhododendron dauricum, Alnus  mandshurica, 
 (grass) Deyeuxia angustifolia, Carex  appendiculata
 Canopy height
 15 m
 Age N/A
 LAI 0.9
 Soil type
 Brown coniferous forest 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
 1.5, 35m
 Sampling frequency
 10Hz
 Averaging time
 30min
 Data logger
 CR5000
 Data storage
 2G PC card
 Original data
 Raw data

Meteorology
 Observation items
  Levels/ Depth
 Instrument 
 Global solar radiation(incoming)
 35 m  CNR1, Kipp & Zonen. Corp., Delft, Holland
 Global solar 
radiation (outgoing)
 35 m
  CNR1, Kipp & Zonen. Corp., Delft, Holland
 Long-wave radiation(outgoing) 
 35 m  CNR1, Kipp & Zonen. Corp., Delft, Holland
 Long-wave radiation(outgoing) 
 35 m
  CNR1, Kipp & Zonen. Corp., Delft, Holland
 Net radiation
 35 m
  CNR1, Kipp & Zonen. Corp., Delft, Holland
 PPFD (incoming)
 35 m
  LI-190Sb,LI-COR Inc., Lincoln, NE, USA
 PPFD (outgoing)
 - 
 Direct / diffuse radiation
 - 
 Direct / diffuse PPFD
 - 
 Air temperature
 1.5, 15, 25, 32  m  HMP45C, Vaisala, Helsinki, Finland
 Humidity 1.5, 15, 25, 32  m  HMP45C, Vaisala, Helsinki, Finland
 Soil temperature
 0, 5, 10, 15, 20,  30 cm    107L, Campbell Scientific Inc., USA
 Soil heat flux
 8 cm  HFP01, Hukseflux Inc., Netherlands
 Soil water 
 content 
 8cm  CS616, Campbell Scientific Inc., USA
 Wind speed
 1.5, 15, 25, 32  m  010C, Met One Instruments, Inc., Oregon, USA
 Wind direction
 32 m  020C, Met One Instruments, Inc., Oregon, USA
 Barometric 
 pressure
 1 m  CS105, Vaisala, Helsinki, Finland
 Precipitation 37 m  TE525, RM Young Inc., Traverse City, MI, USA
 COconcentration
 1.5 m
  LI840, LI-COR Inc., Lincoln, NE, USA
Other
 Soil respiration
 LI-6400-09(Li-cor, Lincoln, NE, USA)
 Photosynthesis LI-6400R Portable Photosynthesis  System(Li-cor, Lincoln, NE, USA)
 Ecological investigation
 Biomass, Litter, Leaf area index,  Chlorophyll
 
Observation Period and Data Availability
 Measurement Period
 July 2006 to present
 Measurement Frequency
 Continuous
 Data Availability
 N/A
Contact
 Guangsheng ZHOU (gszhou [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 
 Bingrui JIA(jiabingrui [at] ibcas.ac.cn) 
 Wei ZENG (zengwei [at] ibcas.ac.cn) 
 Institute of Botany, the Chinese Academy of Sciences, 20 Nanxincun,  
 Xiangshan, Haidian District, Beijing 100093, China
 Other  Jian SONG (songjian [at]ibcas.ac.cn)
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)
-'Study on characteristics of carbon and nitrogen fluxes and their
 environmental controls in Chinese terrestrial ecosystems' funded by the 
- Chinese Academy of Sciences(KZCX2-YW-432)
Long-term ecological observation fund from Institute of Botany,
 the  Chinese Academy of Sciences