Open Research Data Portal
DOI for Scientific and Technical Data
10.4228/ZALF.2012.329
Title
Young alder trees reduced the climate effect of a fen peat meadow with fluctuating water tables
Citation
Huth, Vytas; Hoffmann, Mathias; Bereswill, Sahra; Popova, Yulia; Zak, Dominik; Augustin, Jürgen (2017): Young alder trees reduced the climate effect of a fen peat meadow with fluctuating water tables, Leibniz Centre for Agricultural Landscape Research(ZALF)[doi: 10.4228/ZALF.2012.329]
Publisher
Leibniz Centre for Agricultural Landscape Research (ZALF)
Dates
Accepted: 2017
Collected: 2010-09/2012-08
Contributor(s)
HostingInstitution: Leibniz Centre for Agricultural Landscape Research (ZALF), Müncheberg (Germany)
RegistrationAgency: German National Library of Science and Technology - TIB
DataCollector: Institute of Landscape Biogeochemistry, Leibniz Centre for Agricultural Landscape Research (ZALF)
DataCollector: Institute of Soil Landscape Research, Leibniz Centre for Agricultural Landscape Research (ZALF)
Creator(s)
Huth, Vytas
Hoffmann, Mathias
Bereswill, Sahra
Popova, Yulia
Zak, Dominik
Augustin, Jürgen
Subject(s)
Non-steady-state chamber measurements
Greenhouse gases
Carbon dioxide
Methane
Nitrous oxide
Paludiculture
Carbon balance
Black alder plantation (Alnus glutinosa)
Description
The dataset contains information about a two-year study (August 2010 – August 2012), regarding the effect of a newly established black alder plantation on the net GHG balance of a degraded fen in northeastern Germany. In detail, an black alder plantation (Awet) is compared with an extensively used meadow (Mwet) both characterized by very moist soil conditions and a drier reference meadow (Mmoist) characterized by moderately moist soil conditions. CO2 , CH4 and N2O fluxes were measured monthly to bimonthly with the manual closed chamber method. Fluxes were calculated using a modular R script and gap filled to obtain continuous daily fluxes.
Related identifier
10.19189/MaP.2017.OMB.291
Language
English
Location
Germany: "Kleiner Landgraben"
Data Format
csv
Type of Resource
Dataset: Tables
Rights
Creative Commons Attribution 4.0
Parameter
(parameter; compartment; instrument; method)
Precipitation (mm); 200cm; precipitation gauges; daily sum
PAR (µmol m-2 s-1); 200cm; Skye (Type SKP215) PAR line Quantum Sensor; half-hourly mean
PAR (µmol m-2 s-1); 200cm; Skye (Type SKP215) PAR line Quantum Sensor; daily mean
CO2 concentration (ppmv); inside chamber; LI-820, LI-COR; infrared gas analyzer (IRGA)
Air temperature (°C); 200cm; automatic weather station (LAMBRECHT); half-hourly mean
Air temperature (°C); at chamber height (50-250cm); digital thermometer measurement; calculated mean (1-5min)
Soil temperature (°C); -2cm; automatic weather station (LAMBRECHT); half-hourly mean
Soil temperature (°C); -5cm; automatic weather station (LAMBRECHT); half-hourly mean
Soil temperature (°C); -2cm; thermometer, VOLTCRAFT, DET1R; calculated mean (1-5min)
Soil temperature (°C); -5cm; thermometer, VOLTCRAFT, DET1R; calculated mean (1-5min)
Flux of ecosystem respiration (Reco) (g CO2-C m-2 d-1); CO2; computed; modelled daily value
Flux of gross primary productivity (GPP) (g CO2-C m-2 d-1); CO2; computed; modelled daily value
Flux of net ecosystem exchange (NEE) (g CO2-C m-2 d-1); CO2; computed; modelled daily value
Methane flux (CH4) (g CH4-C m-2 d-1); CH4; computed; modelled daily value
Nitrous oxide flux (N2O) (g N2O-N m-2 d-1); N2O; computed; modelled daily value
Structure of Data Table(s)

Table 1: MEASURED_CO2

Column name Parameter Unit Description
Site  Measurement site ("Awet", "Mwet", "Mmoist")

Date_time

  Date and time, format: "YYYY-MM-DD HH:MM"

FLUX

CO2 flux ​µmol m-2 s-1 Measured CO2 flux (​µmol m-2 s-1) at measurement time "Date_time".

Lower_FLUX

CO2 flux ​µmol m-2 s-1 Via bootstrapping calculated lower limit (confidence interval; alpha=0.1) of measured CO2 flux (µmol m-2 s-1) at measurement time "Date_time".

Upper_FLUX

CO2 flux ​µmol m-2 s-1 Via bootstrapping calculated lower limit (confidence interval; alpha=0.1) of measured CO2 flux (​µmol m-2 s-1) at measurement time "Date_time".

Slope

Regression slope ppmv s-1 Calculated slope of the linear regression between measured CO2 concentrations and measurement time

P_value_slope

  Calculated p-value of the slope of the linear regression between measured CO2 concentrations and measurement time

R_square_FLUX

  Calculated r2 of the linear regression between measured CO2 concentrations and measurement time

Temperature_variation

∆air temperature °C Change in air temperature inside the chamber during the measurement subset used for flux calculation

PAR_variation

∆PAR as % of mean PAR ​% ∆PAR as % of mean PAR outside the chamber during the measurement subset used for flux calculation

FLUX_start_concentration

CO2 concentration ppmv Measured initial CO2 concentrations

Measurement_length

  Length of the measurement subset used for flux calculation

Chamber_type

  Chamber type ("1" for transparent chamber measurement; "0" for opaque chamber measurement)

Volume

Chamber volume m3 Chamber volume (depending on number of used chamber extensions)

Mean_air_Temperature_IN

Air temperature ​°C Mean air temperature inside the chamber during the measurement subset used for flux calculation

Mean_air_Temperature_OUT

Air temperature °C Mean air temperature outside the chamber during the measurement subset used for flux calculation

Mean_soil_Temperature_2cm

Soil temperature ​°C Mean soil temperature in 2 cm soil depth during the measurement subset used for flux calculation

Mean_soil_Temperature_5cm

Soil temperature °C Mean soil temperature in 5 cm soil depth during the measurement subset used for flux calculation

Mean_PAR

Photosynthetic active radiation (outside chamber) µmol m-2 s-1 ​​Mean photosynthetic active radiation (PAR) (400 nm - 700 nm; outside chamber) during the measurement subset used for flux calculation

 

Table 2: MODELLED_CO2

Column name Parameter Unit Description
Date_  Date, format: "YYYY-MM-DD"

Site

  Measurement site ("Awet", "Mwet", "Mmoist")

Reco_cum

CO2 flux g C m-2 d-1 Modelled daily Ecosystem Respiration (Reco)

GPP_cum

CO2 flux g C m-2 d-1 Modelled daily Gross Primary Productivity (GPP)

NEE_cum

CO2 flux g C m-2 d-1 Modelled daily Net Ecosystem Exchange (NEE)

Temp_air

Air temperature °C Average daily air temperature in 200 cm height

PAR

Photosynthetic active radiation (outside chamber) µmol m-2 s-1 ​​Mean daily photosynthetic active radiation (PAR) (400 nm - 700 nm; outside chamber)

 

Table 3: MEASURED_CH4

Column name Parameter Unit Description
Date_  Date, format: "YYYY-MM-DD"

CH4_Awet

CH4 flux g C m-2 d-1 Measured CH4 flux for Awet in g C m-2 d-1

CH4_Mmoist

CH4 flux g C m-2 d-1 Measured CH4 flux for Mmoist in g C m-2 d-1

CH4_Mwet

CH4 flux g C m-2 d-1 ​​Measured CH4 flux for Mwet in g C m-2 d-1

 

Table 4: MODELLED_CH4

Column name Parameter Unit Description
Date_  Date, format: "YYYY-MM-DD"

CH4_Awet

CH4 flux g C m-2 d-1 Modelled (linear interpolation between measured campaign values) CH4 flux for Awet in g C m-2 d-1

CH4_Mmoist

CH4 flux g C m-2 d-1 Modelled (linear interpolation between measured campaign values) CH4 flux for Mmoist in g C m-2 d-1

CH4_Mwet

CH4 flux g C m-2 d-1 Modelled (linear interpolation between measured campaign values) CH4 flux for Mwet in g C m-2 d-1

 

Table 5: MEASURED_N2O

Column name Parameter Unit Description
Date_  Date, format: "YYYY-MM-DD"

N2O_Awet

N2O flux g N m-2 d-1 Measured N2O flux for Awet in g N m-2 d-1

N2O_Mmoist

N2O flux g N m-2 d-1 Measured N2O flux for Mmoist in g N m-2 d-1

N2O_Mwet

N2O flux g N m-2 d-1 ​​Measured N2O flux for Mwet in g N m-2 d-1

 

Table 6: MODELLED_N2O

Column name Parameter Unit Description
Date_  Date, format: "YYYY-MM-DD"

N2O_Awet

N2O flux g N m-2 d-1 Modelled (linear interpolation between measured campaign values) N2O flux for Awet in g N m-2 d-1

N2O_Mmoist

N2O flux g N m-2 d-1 Modelled (linear interpolation between measured campaign values) N2O flux for Mmoist in g N m-2 d-1

N2O_Mwet

N2O flux g N m-2 d-1 Modelled (linear interpolation between measured campaign values) N2O flux for Mwet in g N m-2 d-1

 

Table 7: GWL

Column name Parameter Unit Description
Date_  Date, format: "YYYY-MM-DD"

GWL_Awet

Groundwater level meter above soil surface Measured groundwater level (6x a day) in close proximity to Awet

GWL_Mmoist

Groundwater level meter above soil surface Measured groundwater level (6x a day) in close proximity to Mmoist

GWL_Mwet

Groundwater level meter above soil surface Measured groundwater level (6x a day) in close proximity to Mwet

 

Table 8: SOIL_TEMP

Column name Parameter Unit Description
Date_  Date, format: "YYYY-MM-DD"

Awet_soil_temp_5cm

Soil temperature °C Measured half hourly soil temperature in 5 cm soil depth at a close proximity to Awet

Mmoist_soil_temp_5cm

Soil temperature °C Measured half hourly soil temperature in 5 cm soil depth at a close proximity to Mmoist

Mwet_soil_temp_5cm

Soil temperature °C Measured half hourly soil temperature in 5 cm soil depth at a close proximity to Mwet

 

Table 9: PRECIPITATION

Column name Parameter Unit Description
Date_   Date, format: "YYYY-MM-DD"

Precipitation

Precipitation mm m-2 Measured daily precipitation in mm m-2

 

Additional Information for Dataset
​Refer to the related publication for more details on methods.
View Sample Data
Table 1 (MEASURED_CO2)
Table 2 (MODELLED_CO2)
Table 3 (MEASURED_CH4)
Table 4 (MODELLED_CH4)
Table 5 (MEASURED_N2O)
Table 6 (MODELLED_N2O)
Table 4 (GWL)
Table 5 (SOIL_TEMP)
Table 6 (PRECIPITATION)
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This data by ZALF is licensed under the Creative Commons Attribution 4.0Creative Commons License