[X06]
Xilinhot Fenced steppe

Eddy Correlation Method

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)
CO2	Open path CO2/H2O analyzers (LI-7500, LI-COR)
Measurement height	3.5 m
Sampling frequency	10 Hz
Averaging time	30 min
Data logger	CR5000 (CSI, USA)
Data storage	2G CF card for about one month
Original data (Raw data or statistics)	Raw data

Meteorology

Observation items	Levels / Depth	Instrument
Global solar radiation (incoming)	1.5 m	CNR1 (Kipp and Zonen, Delft, Holland)
Global solar radiation (outgoing)	1.5 m	CNR1 (Kipp and Zonen, Delft, Holland)
Long-wave radiation (incoming)	1.5 m	CNR1 (Kipp and Zonen, Delft, Holland)
Long-wave radiation (outgoing)	1.5 m	CNR1 (Kipp and Zonen, Delft, Holland)
Net radiation	1.5 m	CNR1 (Kipp and Zonen, Delft, Holland)
PPFD (incoming)	4 m	Li190SB,Li-Cor Inc., Lincoln, NE, USA
PPFD (outgoing)	-	-
Direct/diffuse radiation	-	-
Direct/diffuse PPFD	-	-
Air temperature	1, 2, 4 m	HMP-45C, Vaisala, Helsinki, Finland
Humidity	1, 2, 4 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	CS616, Campbell Scientific Inc., Logan, UT, USA
Wind speed	3.5 m	CSAT-3, Campbell Scientific Inc., Logan, UT, USA
Wind direction	3.5 m	CSAT-3, Campbell Scientific Inc., Logan, UT, USA
Barometric pressure	-	-
Precipitation	4 m	TE525, Texas Electronics, Texas, USA
CO2 concentration	3.5 m	Li 7500, Li-Cor Inc., Lincoln, NE, USA

Other

Ecological Investigation

LAI (Li3000A, LI-COR)