JAS: Jinzhou Agricultural Ecosystem Research Station
General site details
| Site name | Jinzhou Agricultural Ecosystem Research Station |
|---|---|
| AsiaFlux site code | JAS |
| Location | Yingtun, Taihe District, Jinzhou, Liaoning province, China |
| Position | 41º 49' N, 121º 12' E (GPS) |
| Elevation | 17 m a.s.l. |
| Slope | 0º |
| Terrain type | Alluvial plain |
| Area | Maize cropping zone |
| Fetch | 200 m |
| Climate | Continental Semi-arid monsoon climate of warm temperate zone |
| Mean annual air temperature | 9.5 deg |
| Mean annual precipitation | 565.9 mm |
| Vegetation type | Cropland |
| Dominant Species (Overstory) | Maize |
| Dominant Species (Understory) | - |
| Canopy height | 3.0 m |
| Age | 1 |
| LAI | 5.1 |
| Soil type | Typical brown soil |
Observation
Eddy Covariance method (CO2)
| System | Open-path system (2002.12-2003.12.31) |
|---|---|
| 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 | 3.5 m |
| Sampling frequency | 10 Hz |
| Averaging time | 30 min |
| Data logger | CR 5000, Campbell, USA |
| Data storage | 1G PC card |
| Original data | Raw data |
Meteorology
| Observation items | Levels/Depth | Instrument |
|---|---|---|
| Global solar radiation(incoming) | 3.5 m | CNR1, Kipp & Zonen. Corp., Delft, Holland |
| Global solar radiation (outgoing) | 3.5 m | CNR1, Kipp & Zonen. Corp., Delft, Holland |
| Long-wave radiation(incoming) | 3.5 m | CNR1, Kipp & Zonen. Corp., Delft, Holland |
| Long-wave radiation(outgoing | 3.5 m | CNR1, Kipp & Zonen. Corp., Delft, Holland |
| Net radiation | 3.5 m | CNR1, Kipp & Zonen. Corp., Delft, Holland |
| PPFD (incoming) | 4 m | LI-190Sb，LI-COR Inc., Lincoln, NE, USA |
| PPFD (outgoing) | - | |
| Direct / diffuse radiation | - | |
| Direct / diffuse PPFD | - | |
| Air temperature | 3.5, 5.0 m | HMP45C, Vaisala, Helsinki, Finland |
| Humidity | 3.5, 5.0 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, Hukeflux Inc., Netherlands |
| Soil water content | 10,20,30,40 cm | CS616, Campbell Scientific Inc., USA |
| Wind speed | 3.5, 5.0 m | 014A，Campbell Scientific Inc., MS, USA |
| Wind direction | 3.5, 5.0 m | 034B, Campbell Scientific Inc., MS, USA |
| Barometric pressure | 3.5 m | CS 7500 (LI-COR LI 7500 CO2/H2O Analyzer) |
| Precipitation | 70 cm | 52203, RM Young Inc., Traverse City, MI, USA |
| CO2 concentration | - |
Other
| Soil respiration | Chamber method |
| Photosynthesis | LI-6400R Portable Photosynthesis System |
| Ecological investigation | Biomass, Height, Leaf area index, Soil features |
Observation Period and Data Availability
| Measurement Period | October 2004 to present |
|---|---|
| Measurement Frequency | Continuous |
| Data Availability | N/A |
Contact
Guangsheng ZHOU (gszhou [at] ibcas.ac.cn) Institute of Botany, the Chinese Academy of Sciences 20 Nanxincun, Xiangshan, Haidian District, Beijing 100093, China Tel: +86-10-62836268 Fax: +86-10-82595962 http://gcte.ibcas.ac.cn/ [in Chinese]
Rongping LI (rongpingli [at] 163.com) 66 Wenhua Road, Shenhe District, Shenyang 110016, Liaoning Province, China
Qingyu JIA (beyond.22 [at] 126.com) 66 Wenhua Road, Shenhe District, Shenyang 110016, Liaoning Province, China
Songjian (songjian [at] ibcas.ac.cn)
Research Fund
"Integrated observation and simulation on vegetation-atmosphere interactions over typical terrestrial ecosystems' funded by National Natural Science Foundation of China (40625015)
'Aridification in northern China and human being adaptation' funded by State Science and Technology Committee (2006CB400502)
'Mechanism of environmental pollution and ecological rehabilitation in Northeast industry base' funded by State Science and Technology Committee (2004CB418507-1)
Calibration Information
Calibrations for all instruments would be done once a year