NRW: Natural reed flux plot _ Panjin Wetland Ecosystem Research Station
General site details
| Site name | Natural reed flux plot _ Panjin Wetland Ecosystem Research Station |
|---|---|
| AsiaFlux site code | NRW |
| Location | Shuangtai Estuary National Nature Reserve, Panjin, Liaoning province, China |
| Position | 41º 08.4' N, 121º 54.7' E (GPS) |
| Elevation | 7 m a.s.l. (GPS) |
| Slope | 0º |
| Terrain type | AreaAlluvial plain |
| Area | 900 km2 |
| Fetch | 350 m |
| Climate | Continental semi-humid monsoon climate of warm temperate zone |
| Mean annual air temperature | 8.6°C |
| Mean annual precipitation | 631 mm |
| Vegetation type | Type Reed marsh |
| Dominant Species (Overstory) | Phragmites australis |
| Dominant Species (Understory) | - |
| Canopy height | 3 m |
| Age | - |
| LAI | 4 |
| Soil type | Silty clay |
Observation
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 | 4.5 m |
| Sampling frequency | 10 Hz |
| Averaging time | 30 min |
| Data logger | CR 5000 |
| Data storage | PC card |
| Original data | Raw data |
Meteorology
| Observation items | Levels/Depth | Instrument |
|---|---|---|
| Global solar radiation(incoming) | 5 m | CNR1, Kipp & Zonen. Corp., Delft, Holland |
| Global solar radiation (outgoing) | 5 m | CNR1, Kipp & Zonen. Corp., Delft, Holland |
| Long-wave radiation(incoming) | 5 m | CNR1, Kipp & Zonen. Corp., Delft, Holland |
| Long-wave radiation(outgoing) | 5 m | CNR1, Kipp & Zonen. Corp., Delft, Holland |
| Net radiation | 5 m | CNR1, Kipp & Zonen. Corp., Delft, Holland |
| PPFD (incoming) | 6.5 m | LI-190Sb，LI-COR Inc., Lincoln, NE, USA |
| PPFD (outgoing) | - | |
| Direct / diffuse radiation | - | |
| Direct / diffuse PPFD | - | |
| Air temperature | 4, 6.5 m | HMP45C, Vaisala, Helsinki, Finland |
| Humidity | 4, 6.5 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 | 5 cm | CS616, Campbell Scientific Inc., USA |
| Wind speed | 4, 6.5 m | 014A, Campbell Scientific Inc., MS, USA |
| Wind direction | 6.5 m | 034B, Campbell Scientific Inc., MS, USA |
| Barometric pressure | 4.5 m | CS 7500 (LI-COR LI 7500 CO2/H2O Analyzer) |
| Precipitation | Above the canopy | 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, Soil microbial features |
Observation Period and Data Availability
| Measurement Period | June 2004 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) Institute of Atmospheric Environment, China Meteorological Administration, Shenyang, 66 Wenhua Road, Shenhe District, Shenyang 110016, Liaoning Province
Wenying Yu (wuying0636 [at] sina.com) Institute of Atmospheric Environment, China Meteorological Administration, Shenyang, 66 Wenhua Road, Shenhe District, Shenyang 110016, Liaoning Province
Other Li ZHOU (zhouli [at] yahoo.cn), Guohong LV (lgh7210 [at] yahoo.com.cn)
Infrastructure
EC-tower and micrometeorological tower
Research Fund
'Integrated observation and simulation on vegetation-atmosphere interactions over typical terrestrial ecosystems' funded by National Natural Science Foundation of China (40625015) 'Observation system development of soil carbon budget over reed marsh in Panjin wetland' funded by China Meteorological Administration '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