Stevens Hydra ProbeⅡ, Stevens Water Monitoring Systems, Inc.)
Wind speed
51.6 m
Windmaster Pro Anemometer, 3-Axis Ultrasonic Anemometer(7900-415-50, Gill instruments Ltd, UK)
Wind direction
51.6 m
Windmaster Pro Anemometer, 3-Axis Ultrasonic Anemometer(7900-415-50, Gill instruments Ltd, UK)
Atmospheric pressure
51.6 m
Enclosed path CO2/H2O Analyzer (LI-7200, LI-COR Inc. USA)
Precipitation
1.5 m
Manual rain gauge bucket (NETA, 250 mm, 10 inch)
CO2 concentration
4,11,29,48 m
Closed path CO2 Analyzer (LI-8100, LI-COR Inc. USA)
Fluxes of non-CO2 gases
Gas
CH4, N2O
Method
CH4 (Open Path CH4 analyzer LI-7700 LI-COR Inc. USA), N2O (Manual ground chamber based, analyzed using gas chromatograph-SRI ®8610C, USA)
Measurement height
CH4 (51.6m), N2O (measurements at peat surface)
Data logger
CH4 (LI-7550 Analyzer Interface Unit (AIU) LI-COR Inc. USA)
Data storage
Removable flash disk (APRO, Industrial Grade USB Flash Disk)
Chamber size of N2O
Volume: 6.750cm3, Chamber Dimensions: 30cm L x 15cm W x 15cm H
Other
Soil respiration
-
Photosynthesis
No
Ecological Investigation
Tree diameter at breast height, tree stand density, micro-topography, litter fall inputs, Bulk density, N, P, K and C concentrations
Peat subsidence
Manual subsidence poles using perforated 5cm diameter hollow PVC pipes, inserted vertically into the peat and anchored into underlying mineral subsoil, measurements frequency: Quarterly
Ground water level
Automated groundwater level logger (Solinst Levelogger Model 3001), placed inside a perforated polyvinyl chloride (PVC) pipe, measurements frequency: 30 min.
Observation Period and Data Availability
Measurement Period
June 2017 to present
Measurement Frequency
Continuous (10 Hz (30 minutes averaged)
Data Availability
N/A
Contact
Chandra Shekhar Deshmukh (Chandra_Deshmukh[at]aprilasia.com) Asia Pacific Resources International Limited (APRIL), JI. Lintas Timur, Pangkalan Kerinci, Kabupaten Pelalawan Riau 28300, Indonesia
Infrastructure
Tower, Solar cell electrical power (DC), Accommodation (Solar battery house and Guest gazebo), Telecommunication signal available
Both enclosed-path (LI-7200) and closed-path (LI-8100) CO2 analyzers were calibrated every three months using ultra high-purity nitrogen as the zero-point gas for CO2 and reference gases with concentration of 396ppm CO2 in air (certified grade ±1ppm)
Publication
Deshmukh, C. S., Julius, D., Evans, C. D., Nardi, Susanto, A. P., Page, S. E., Gauci, V., Lauren, A., Sabiham, S., Agus, F., Asyhari, A., Kurnianto, S., Suardiwerianto, Y., & Desai, A. R. (2019). Impact of forest plantation on methane emissions from tropical peatland. Global Change Biology, 24(9), https://onlinelibrary.wiley.com/doi/10.1111/gcb.15019
Deshmukh, C. S., Julius, D., Desai, A. R., Asyhari, A., Page, S. E., Nardi, Susanto, A. P., Nurholis, Hendrizai, M., Kurnianto, S., Suardiwerianto, Y., Salam, Y. W., Agus, F., Astiani, D., Sabiham, S., Gauci, V. & Evans, C. D. (2021). Conservation slows down emission increase from a tropical peatland in Indonesia. Nature Geoscience,https://rdcu.be/cnL8u
