This README file was generated on 2024-03-15 by Cheuk Hei Marcus Tong.

GENERAL INFORMATION

1. Title of Dataset: A drained nutrient‐poor peatland forest in boreal Sweden constitutes a net carbon sink after integrating terrestrial and aquatic fluxes

2. Dataset abstract: In this study, we estimated the net ecosystem carbon balance (NECB) from a nutrient‐poor drained peatland forest and an adjacent natural mire in northern Sweden by integrating terrestrial carbon dioxide (CO2) and methane (CH4) fluxes with aquatic losses of dissolved organic C (DOC) and inorganic C based on eddy covariance and stream discharge measurements, respectively, over two hydrological years. Each variable presented was measured during each experimental period in sites.

3. Author Information

A. Principal Investigator Contact Information

Name: Cheuk Hei Marcus Tong

Institution: Swedish University of Agricultural Sciences

Address: Umeå, Sweden

Email: cheuk.hei.tong@slu.se

4. Date of data collection (single date, range, approximate date): 2020-2022

5. Geographic location of data collection: Hälsingfors, Västerbotten, Sweden

5. Information about funding sources that supported the collection of the data: Swedish Research Council for Environment Agricultural Sciences and Spatial Planning, Award: 2016-01289, 2020-01446, 2017-00635; Stiftelsen Oscar och Lili Lamms Minne, Award: 2017.4.1-68; Knut and Alice Wallenberg Foundation, Award: 2018.0259; Kempe Foundation, Award: JCK.1712.

SHARING/ACCESS INFORMATION

1. Licenses/restrictions placed on the data: CC0 1.0 Universal (CC0 1.0) Public Domain

2. Links to publications that cite or use the data:

https://doi.org/10.1111/gcb.17246

3. Links to other publicly accessible locations of the data: None

4. Links/relationships to ancillary data sets: None

5. Was data derived from another source? No

A. If yes, list source(s): NA

6. Recommended citation for this dataset:

https://doi.org/10.5061/dryad.gqnk98sw5

DATA & FILE OVERVIEW

1. File List:

|- Chamber data/

|- Continuous environment data/

| |- HDPF

| |- |- CR1000X_30min_2020_eddy_pro.csv

| |- |- CR1000X_30min_2021_eddy_pro.csv

| |- |- CR1000X_30min_2022_eddy_pro.csv

| |- Hälsingfors Mire

| |- |- Halsingfors_BIOMET_30min.csv

| |- |- UNITS_BIOMET_30min.csv

| Eddy Covariance data

| |- HDPF

| |- |- HDPF_Sparse forest_CO2_30min.txt

| |- |- HDPF_Dense forest_CO2_30min.txt

| |- |- HDPF_Combined forest area_CO2_30min.txt

| |- |- HDPF_CH4.xlsx

| |- Hälsingfors Mire

| |- |- Halsingfors_CH4_30min.txt

| |- |- Halsingfors_CO2_30min.txt

2. Relationship between files, if important: None

3. Additional related data collected that was not included in the current data package: None

4. Are there multiple versions of the dataset? No

A. If yes, name of file(s) that was updated: NA

i. Why was the file updated? NA

ii. When was the file updated? NA

5. In all the files, empty cells are represented as “n/a”.

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DATA-SPECIFIC INFORMATION FOR: |- Chamber data/

This includes all single chamber measurement data. The three sheets illustrate the data for the three separate years. Description of the columns can be found in description.xlsx.

DATA-SPECIFIC INFORMATION FOR:|- Continuous environment data/

| |- Continuous environment data/HDPF

This folder includes three files separated into the three years. Each file includes half-hourly measurement of air temperature (Ta), relative humidity (RH), incoming shortwave radiation (Swin), outgoing shortwave radiation (SWout), incoming longwave radiation (Lwin), outgoing longwave radiation (LWout), photosynthetic photon flux density (PPFD) and the soil temperature (Ts), from Hälsingfors drained peatland forest (HDPF). The unit of the columns are listed in the second row.

| |- Continuous environment data/Hälsingfors Mire

This folder includes the environmental data recorded from the Hälsingfors Mire during the study tears. The file includes two files: “Halsingfors_BIOMET_30min.csv” includes the half-hourly data; “UNITS_BIOMET_30min.csv” includes the description of each column of the half-hourly data.

DATA-SPECIFIC INFORMATION FOR:| Eddy Covariance data

| |- Eddy Covariance data/HDPF

The file “HDPF_Combined forest area_CO2_30min.txt” includes the original and the gapfilled CO2 flux data at HDPF. The partitioned data into sparse and dense forest are in “HDPF_Sparse forest_CO2_30min.txt” and “HDPF_Dense forest_CO2_30min.txt”, respectively. In these three files, the columns include year, day of year (DoY), hour, NEE, data source (whether it is gapfilled or original data), ecosystem respiration (Reco) and gross primary productivity (GPP_f). The units are included in the second row.

All methane (CH4) data are stored in HDPF_CH4.xlsx. There are two sheets in the file, namely “daily mean” and “30 min raw filtered data”. In “daily mean”, the columns include year, day of year (DoY), flux from combined forest area (ug C m-2 h-1), sparse forest (ug C m-2 h-1) and dense forest (ug C m-2 h-1). The units are mentioned in the first row. In ““30 min raw filtered data”, the columns include year, DoY, hour, CH4 flux, and source. The units are mentioned in the second row.

| |- Eddy Covariance data/ Hälsingfors Mire

The file “Halsingfors_CO2_30min.csv” has included the includes the original and the gapfilled CO2 flux data at Hälsingfors Mire. The columns include date time, NEE, data source (whether it is gapfilled or original data), ecosystem respiration (Reco) and gross primary productivity (GPP). The units are included in the first row.

The file “Halsingfors_CH4_30min.csv” has included the includes the original and the gapfilled CH4 flux data at Hälsingfors Mire. The columns include date time, CH4 and data source (whether it is gapfilled or original data). The units are included in the first row.

DATA-SPECIFIC INFORMATION FOR:| Dissolved carbon data

The file “Discharge rate.xlsx” includes the daily mean discharge rate (in L s-1) in the sparse forest, dense forest and mire.

The file “DOC DIC concentration.xlsx” includes the concentration of DOC and DIC based on each sampling measurement. The column includes the date, site name, “DOC_mg_l” (DOC concentration in mg L-1) and “DIC_mg_l” (DIC concentration in mg L-1).