Rottasniitunsuo
Brief description
Rottasniitunsuo is a freshly rewetted peatland forest located in Tammela, Finland (60° 41'43.5"N 23° 59'05.7"E). The formerly mostly open or sparsely treed mire was thoroughly drained for forestry in the 1960–70’s, although some parts had been ditched already earlier, probably in the 1930–40’s. Eddy covariance measurements of CO₂ started in July 2022, complemented with CH₄ from May 2023 onwards. Other continuous measurements include air and soil meteorology as well as microclimate temperature and soil moisture measurements around the site. Manual chamber measurements of CO₂, CH₄ and N₂O fluxes on different surfaces have been carried out since 2022. The tree species include Scots pine, Norway spruce and downy birch with several field layer vegetation types. The rewetting started in Feb 2024 with the thinning of the central pine stand to approximately half of its volume. Ditch blocking was done in October 2024, after which the water table has raised considerably. The 30-year mean annual temperature in the area is 5.2 °C and mean annual precipitation 621 mm (1991–2020).
–Erkka Rinne
Data figures
Site description
Coordinates | |
Altitude (masl) | 119 |
Ecosystem type | Drained peatland forest |
Rottasniitunsuo climatology and vegetation
Measurements info
Device | Location | Variables | Responsible person | Owner | Start | End | Frequency | Data availability | Description | Notes |
|---|---|---|---|---|---|---|---|---|---|---|
LI-COR LI-7200 Gas analyser | mast 22 m | CO2, H2O | Sami Haapanala (sami.haapanala@suvilumi.fi) | UH | 2022-07-01 |
| 30 min | UH DataCloud | Eddy covariance flux of carbon dioxide and water vapor | Northward separation +8.00 cm Inlet length 82 cm |
Los Gatos Research RMT-200
| hut | CH4, H2O | Sami Haapanala (sami.haapanala@suvilumi.fi) | FMI | 2023-05-10 |
| 30 min | UH DataCloud | Eddy covariance flux of methane and water vapor, inlet at 22 m | Northward separation –10.50 cm Inlet length XX cm |
| CIC | hut | cluster ion concentration | Markus Lampimäki (markus.lampimaki@helsinki.fi) | UH | 2025-05-02 | total concentration of positive and negative cluster ions measured at 1.5 m above ground level | ||||
METEK uSonic-3 | mast 22 m | Wind speed and direction | Sami Haapanala (sami.haapanala@suvilumi.fi) | UH | 2022-07-01 |
| 30 min | UH DataCloud | 3D wind for eddy covariance |
|
Vaisala GMP 343 | hut | CO2 | Sami Haapanala (sami.haapanala@suvilumi.fi) | UH | 2023-02-08 |
| 30 min | UH DataCloud | CO2 concentration for storage flux calculation, inlet at scaffolding 5 m |
|
Kipp & Zonen PQS1 | mast 22 m | PPFD | Sami Haapanala (sami.haapanala@suvilumi.fi) | UH | 2022-07-01 |
| 30 min | UH DataCloud | Photosynthetically active photon flux density |
|
Kipp & Zonen CNR4 | mast 22 m | Net radiation | Sami Haapanala (sami.haapanala@suvilumi.fi) | UH | 2022-07-01 |
| 30 min | UH DataCloud | Net radiation (4 components) |
|
Vaisala HMP110 | mast 22 m | Air temp. and relative humidity | Sami Haapanala (sami.haapanala@suvilumi.fi) | UH | 2022-07-01 |
| 30 min | UH DataCloud | Air temperature and relative humidity at the top of the mast |
|
Vaisala HMP110 | 2 m | Air temp. and relative humidity | Sami Haapanala (sami.haapanala@suvilumi.fi) | UH | 2022-07-01 |
| 30 min | UH DataCloud | Air temperature and relative humidity at ground level |
|
Vaisala BARO-1 | 2 m | Air pressure | Sami Haapanala (sami.haapanala@suvilumi.fi) | UH | 2023-02-02 |
| 30 min | UH DataCloud | Air pressure at ground level |
|
Pt100 | soil | Soil temperature profile | Sami Haapanala (sami.haapanala@suvilumi.fi) | UH | 2022-07-01 |
| 30 min | UH DataCloud | Soil temperature profile below ground 1: 5 cm (A, west side) | Sensor T7 broken (2023-01-17), replaced on 2023-07-04 |
Hukseflux HFP01SC | soil | Soil heat flux | Sami Haapanala (sami.haapanala@suvilumi.fi) | UH | 2022-07-01 |
| 30 min | UH DataCloud | Soil heat flux at –7.5 cm |
|
Delta-T ML3 ThetaProbe | soil | Soil moisure profile | Sami Haapanala (sami.haapanala@suvilumi.fi) | UH | 2022-07-01 |
| 30 min | UH DataCloud | Soil moisture profile below ground 1: 10 cm (A) | #todo: Calibration to local soil |
STS PTM/N | soil, depth 85 cm | water table depth | Sami Haapanala (sami.haapanala@suvilumi.fi) | FMI | 2023-09-07 |
| 30 min | UH DataCloud | Water table depth, pressure sensor located 85 cm below soil surface |
|
TOMST TMS-4 logger | around site | temperature, soil moisture | Erkka Rinne (erkka.rinne@fmi.fi) | FMI | 2022-06-22 |
| 15 min |
| Total 192 loggers around the site measuring temperature at −6, +2, +15 cm as well as soil moisture. |
|
TOMST TMS-4 logger | at platform #1 | temperature, soil moisture | Dr. José Miguel Sanchez Perez (jose-miguel.sanchez-perez@univ-tlse3.fr) | CNRS, FR | 2023-09 |
|
|
| 1 logger |
|
Portable M-GGA, LI-COR gas analysers | around site | CO2, CH4, N2O flux | Kari Minkkinen (kari.minkkinen@helsinki.fi) | UH | 2022 |
| non-continuous |
| 7 manual chamber measurement plots around the site. Treatments with and without plants+roots. |
|
Odyssey water-level loggers | around site | water table depth | Kari Minkkinen (kari.minkkinen@helsinki.fi) | UH | 2022 |
| non-continuous |
| One logger at each chamber plot |
|
i-button | around site | soil temperature | Kari Minkkinen (kari.minkkinen@helsinki.fi) | UH | 2022 |
| non-continuous |
| One logger at each chamber plot, 5 and 30 cm depth |
|
Paleoterra | around site | RedOx potential | Markku Koskinen (markku.koskinen@helsinki.fi) | UH | 2022 |
| non-continuous |
| Three probes/plot at manual chamber measurement plots 1, 3, 4 and 7 Each probe measures at four depths: 10, 20, 30 and 45 cm below soil surface. |
|
Implexx sap flow sensor Gen 2 | around site | Sap flow and tree water content | Angelika Kübert (angelika.kuebert@helsinki.fi) | UH | 2023-07-07 |
| non-continuous |
| Sap flow and tree water content at plots #1, 3, 4, 5 and 7 |
|
Rain gauges, throughfall collectors | around site | precipitation, throughfall | Angelika Kübert (angelika.kuebert@helsinki.fi) | UH | 2023 |
| non-continuous |
| Event based logging of rain and throughfall. Throughfall collectors checked approx. once a month. |
|