HBG: Haibei Potentilla fruticisa bosk Site

General site detail (Updated 11 August 2014)
 Site name
 Haibei Potentilla fruticisa bosk Site
 AsiaFlux site code
 Location the northeastern part of the Qinghai-Tibetan Plateau
 Position 101°12' ~ 101°23'E, 37°29' ~ 37°45' N
 Elevation 756 m above sea level
 Terrain type
 mild hypsography, flood land and low hills are dominant landscapes in this area
 Climate highland continental climate
 Mean annual air temperature
 - 1.7 deg C
 Mean annual precipitation
 600 mm (long term)
 Vegetation type
 typical frigid vegetation of Northern Qinghai-Tibetan Plateau
 Domestic species (Overstory)
 Potentilla fruticisa, Kobresia humilis,
Kobresia tibetica

 Dominant species (Understory)
 Canopy height
 Age -
 LAI -
 Soil type
 alpine meadow soil, alpine scrubby meadow soil, and swamp soil

Eddy Covariance method (CO2)
 System Open path combined with closed path system (CO2 flux, latent heat flux)
 Wind speed 
 Three dimensional sonic anemometer (CSAT3, CAMPBELL SCIENTIFIC)
 Air temperature
 Water vapor
 Open and closed path CO2/H2O analyzers
 (LI-7500 and LI-7000, LI-COR)
 CO2 Open and closed path CO2/H2O analyzers
 (LI-7500 and LI-7000, LI-COR)
 Measurement height
 23 m, 39 m
 Sampling frequency
 10 Hz
 Averaging time
 30 min
 Data logger
 CR5000 (CSI USA)
 Data storage
 Original data
 Raw data

 Observation items
  Levels/ Depth
 Global solar radiation(incoming)
 1.2 m CM11 (Kipp & Zonen, The Netherlands)
 Global solar 
radiation (outgoing)
 Long-wave radiation(incoming) 
 1.2 m CNR1 (Kipp & Zonen, The Netherlands)
  Long-wave radiation(outgoing) 1.2 m CNR1 (Kipp & Zonen, The Netherlands)
 Net radiation
 1.2 m CNR1 (Kipp & Zonen, The Netherlands)
 PPFD (incoming)
 PPFD (outgoing)
 Direct / diffuse radiation
 Direct / diffuse PPFD
 Air temperature
 1.2 m. 2.2m
 HMP45C, VAISALA, Finland
 Humidity 1.2 m. 2.2m HMP45C, VAISALA, Finland
 Soil temperature
 Soil heat flux
 Heat flux plate (HFP01, HUKSEFLUX)
 Soil water 
 -20 cm, -40cm
 CS616, Campbell Scientific Inc., Logan, UT, USA
 Wind speed
 1.2 m, 2.2m
 Wind direction
 2.2 m Wind vane (W200P, VECTOR INSTRUMENTS)
 1.2 m
 Barometer (CS105, VAISALA)
 Precipitation 1.2 m Tipping-bucket rain gauge (52203, RM YOUNG)
 Soil respiration
 Photosynthesis -
 Ecological investigation
Observation Period and data Availability
 Measurement Period
 Measurement Frequency
 Data Availability
 2003-2004 in AsiaFlux database
 Xinquan Zhao (xqzhao[at]nwipb.ac.cn)
Northwest Plateau Institute of Biology, CAS
59 Xiguan Street, Xining, 810001, P.R.China
 Yingnian Li, Liang Zhao, Song Gu