[1159] - Spatio-temporal drivers of soil and ecosystem carbon fluxes at field scale in an upland grassland in Germany

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Borchard, N., Schirrmann, M., von Hebel, C., Schmidt, M., Baatz, R., Firbank, L., Vereecken, H., Herbst, M., 2015. Spatio-temporal drivers of soil and ecosystem carbon fluxes at field scale in an upland grassland in Germany. Agriculture, Ecosystems and Environment, 211, 84 - 93. DOI: 10.1016/j.agee.2015.05.008.
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Title(s):Main Title: Spatio-temporal drivers of soil and ecosystem carbon fluxes at field scale in an upland grassland in Germany
Description(s):Abstract: Ecosystem carbon (C) fluxes in terrestrial ecosystems are affected by varying environmental conditions (e.g., soil heterogeneity and weather) and land management. However, the interactions between soil respiration (Rs) and net ecosystem exchange (NEE) and their spatio-temporal dependence on environmental conditions and land management at field scale is not well understood. We performed repeated C flux measurement at 21 sites during the 2013 growing season in a temperate upland grassland in Germany, which was fertilized and cut three times according to the agricultural practice typical of the region. Repeated measurements included determination of NEE, Rs, leaf area index (LAI), meteorological conditions as well as physical and chemical soil properties. Temporal variability of Rs was controlled by air temperature, while LAI influenced the temporal variability of NEE. The three grass cuts reduced LAI and affected NEE markedly. More than 50% of NEE variability was explained by defoliation at field scale. Additionally, soil heterogeneity affected NEE, but to a lower extent (>30%), while Rs remained unaffected. We conclude that grassland management (i.e., repeated defoliation) and soil heterogeneity affects the spatio-temporal variability of NEE at field scale.
Identifier(s):DOI: 10.1016/j.agee.2015.05.008
Responsible Party
Creator(s):Author: Nils Borchard
Author: Michael Schirrmann
Author: Christian von Hebel
Author: Marius Schmidt
Author: Roland Baatz
Author: Les Firbank
Author: Harry Vereecken
Author: Michael Herbst
TR32 Topic:Soil
Related Sub-project(s):B1
Subject(s):CRC/TR32 Keywords: Efflux, CO2, Carbon, NEE, Spatial Variability, Photosynthesis, Heterotrophic Respiration
File Details
File Name:2015_agee_Borchard.pdf
Data Type:Text
Size(s):9 Pages
File Size:2091 kB (2.042 MB)
Date(s):Date Accepted: 2015-05-15
Mime Type:application/pdf
Data Format:PDF
Download Permission:OnlyTR32
General Access and Use Conditions:For internal use only
Access Limitations:For internal use only
Licence:TR32DB Data policy agreement
North:-no map data
Measurement Region:Kall
Measurement Location:Rollesbroich
Specific Informations - Publication
Article Type:Journal
Source:Agriculture, Ecosystems and Environment
Number Of Pages:9
Page Range:84 - 93
Metadata Details
Metadata Creator:Michael Herbst
Metadata Created:2015-06-10
Metadata Last Updated:2015-06-10
Funding Phase:2
Metadata Language:English
Metadata Version:V41
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