Spatio-temporal drivers of soil and ecosystem carbon fluxes at field scale in an upland grassland in Germany
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| Title: | Main Title: Spatio-temporal drivers of soil and ecosystem carbon fluxes at field scale in an upland grassland in Germany |
| Description: | 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: | 10.1016/j.agee.2015.05.008 (DOI) |
Responsible Party
| Creators: | Nils Borchard (Author), Michael Schirrmann (Author), Christian von Hebel (Author), Marius Schmidt (Author), Roland Baatz (Author), Les Firbank (Author), Harry Vereecken (Author), Michael Herbst (Author) |
| Publisher: | Elsevier |
| Publication Year: | 2015 |
Topic
| TR32 Topic: | Soil |
| Related Subproject: | B1 |
| Subjects: | Keywords: Efflux, CO2, Carbon, NEE, Spatial Variability, Photosynthesis, Heterotrophic Respiration |
File Details
| Filename: | 2015_agee_Borchard.pdf |
| Data Type: | Text - Article |
| Size: | 9 Pages |
| File Size: | 2 MB |
| Date: | Accepted: 15.05.2015 |
| Mime Type: | application/pdf |
| Data Format: | |
| Language: | English |
| Status: | Completed |
Constraints
| Download Permission: | Only Project Members |
| General Access and Use Conditions: | For internal use only |
| Access Limitations: | For internal use only |
| Licence: | [TR32DB] Data policy agreement |
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Specific Information - Publication
| Publication Status: | Published |
| Review Status: | Peer reviewed |
| Publication Type: | Article |
| Article Type: | Journal |
| Source: | Agriculture, Ecosystems and Environment |
| Volume: | 211 |
| Number of Pages: | 10 (84 - 93) |
Metadata Details
| Metadata Creator: | Michael Herbst |
| Metadata Created: | 10.06.2015 |
| Metadata Last Updated: | 10.06.2015 |
| Subproject: | B1 |
| Funding Phase: | 2 |
| Metadata Language: | English |
| Metadata Version: | V50 |
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| Metadata Downloads: | 0 |
| Dataset Downloads: | 0 |
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