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
CO2 concentration
-
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)