BNS: Xishuangbanna Site
General site details
| Site name | Xishuangbanna Site |
|---|---|
| AsiaFlux site code | BNS |
| Location | Menlung town, Xishuangbanna, Yunnan Province |
| Position | 101º 12' E, 21º 57' N |
| Elevation | 756 m above sea level |
| Slope | |
| Terrain type | Small basin surrounded by low mountains and hills |
| Area | |
| Fetch | |
| Climate | Tropical rain forest |
| Mean annual air temperature | 21 deg C (long term) |
| Mean annual precipitation | 1492 mm (long term) |
| Vegetation type | Tropical rain forest |
| Dominant Species (Overstory) | Pometia tomentosa, Terminalia myriocarpa, Gironniera subaequalis and Garuga floribunda |
| Dominant Species (Understory) | |
| Canopy height | 35 m |
| Age | |
| LAI | |
| Soil type |
Observation
Eddy Covariance method (CO2)
| System | Open-path system (CO2 flux, latent heat flux) |
|---|---|
| Wind speed | Three dimensional sonic anemometer |
| Air temperature | Three dimensional sonic anemometer |
| Water vapor | Open-path analyzer (LI-7500, LI-COR, USA) |
| CO2 | Open-path analyzer (LI-7500, LI-COR, USA) |
| Measurement height | 48.8 m |
| Sampling frequency | 10 Hz |
| Averaging time | 30 min |
| Data logger | CR5000 (CSI USA) |
| Data storage | |
| Original data | Raw data |
Meteorology
| Observation items | Levels/Depth | Instrument |
|---|---|---|
| Global solar radiation(incoming) | 42 m | CNR1 (Kipp & Zonen, The Netherlands) |
| Global solar radiation (outgoing) | 42 m | CNR1 (Kipp & Zonen, The Netherlands) |
| Long-wave radiation(incoming) | 42 m | CNR1 (Kipp & Zonen, The Netherlands) |
| Long-wave radiation(outgoing) | 42 m | CNR1 (Kipp & Zonen, The Netherlands) |
| Net radiation | 42 m | CNR1 (Kipp & Zonen, The Netherlands) |
| PPFD (incoming) | ||
| PPFD (outgoing) | ||
| Direct / diffuse radiation | ||
| Direct / diffuse PPFD | ||
| Air temperature | 42 m | HMP45C, VAISALA, Finland |
| Humidity | 42 m | HMP45C, VAISALA, Finland |
| Soil temperature | 5 cm | Probe (107, CAMPBELL SCIENTIFIC) |
| Soil heat flux | ||
| Soil water content | ||
| Wind speed | 70 m | Anemometer (A100R, VECTOR INSTRUMENTS) |
| Wind direction | 70 m | Wind vane (W200P, VECTOR INSTRUMENTS) |
| Barometric pressure | ||
| Precipitation | 69.8 m | Tipping-bucket rain gauge (52203, RM YOUNG) |
| CO2 concentration |
Other
| Soil respiration | - |
| Photosynthesis | - |
| Ecological investigation |
Observation Period and Data Availability
| Measurement Period | From July 2002 to present |
|---|---|
| Measurement Frequency | Continuous |
| Data Availability | 2003-2005 in AsiaFlux database |
Contact
Zhang Yiping (yipingzh [at] xtbg.ac.cn)
Xishuangbanna Tropical Botanical Garden, CAS
88 Xuefu Road, Wuhua District, Kunming, 650223, P.R. China
[Others]
Jianwei Tang, Min Cao, Liqing Sha, Zheng Zheng, Youxin Ma