DOI: 10.5061/dryad.gqnk98sw5
title: A drained nutrient-poor peatland forest in boreal Sweden constitutes a net carbon sink after integrating terrestrial and aquatic fluxes

description: 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.
description: Please refer to the publications that cite or use the
 data: https://doi.org/10.1111/gcb.17246
description: 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”.
 \#########################################################################
 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).