Partitioning carbon fluxes in a permafrost landscape:
Gespeichert in:
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| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
Hamburg
2017
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| Schriftenreihe: | Hamburger bodenkundliche Arbeiten
Band 87 |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | 128 Seiten Illustrationen, Diagramme |
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Titel: Partitioning carbon fluxes in a permafrost landscape
Autor: Eckhardt, Tim
Jahr: 2017
Table of Contents
LIST OF FIGURES.5
LIST OF TABLES.7
LIST OF ABBREVIATIONS AND SYMBOLS.8
SUMMARY.11
ZUSAMMENFASSUNG.13
1. INTRODUCTION AND OBJECTIVES.15
2. STATE OF THE ART.19
2.1. Permafrost.19
2.2. Permafrost-carbon feedback.20
2.3. CO2 - fluxes and processes in arctic permafrost landscapes.23
2.3.1. Uptake and release processes.23
2.3.2. Partitioning ecosystem respiration.25
2.3.3. Fluxes in arctic permafrost regions.28
2.4. CHd - fluxes and processes in arctic permafrost landscapes.28
2.4.1. CH4 production, oxidation and transport mechanisms.28
2.4.2. Environmental controls on CFU fluxes.30
2.4.3. CH4 flux estimates from arctic permafrost landscapes.31
2.5. Chamber measurement technique.32
3. STUDY AREA.35
3.1. Lena River Delta.35
3.2. Samoylov Island.36
4. METHODS.41
4.1. Meteorological data.41
4.2. Soil, vegetation and porewater analysis.41
4.3. Chamber measurements.42
4.3.1. Light and dark chamber measurements.42
4.3.2. Root-trenching approach.45
4.4. Flux calculation.46
4.5. Modelling carbon fluxes.48
4.5.1. C02 model.48
4.5.2. CH4 model.52
3
4.6. C02 and CHU budgets.54
5. RESULTS.55
5.1. Environmental conditions.55
5.1.1. Meteorological conditions.55
5.1.2. Soil characteristics.61
5.1.3. Vegetation units.62
5.1.4. Porewater conditions.66
5.2. C02 fluxes.67
5.2.1. Chamber fluxes 2014.67
5.2.2. Chamber fluxes 2015.68
5.2.3. Model parametrization.74
5.2.4. Modeled C02 fluxes.76
5.2.5. Cumulative C02 fluxes.80
5.3. CHa fluxes.83
5.3.1. Chamber fluxes 2014.83
5.3.2. Chamber fluxes 2015.84
5.3.3. Correlation with environmental parameters.86
6. DISCUSSION.87
6.1. C02 fluxes.87
6.1.1. C02 fluxes in comparison with other studies.88
6.1.2. Environmental controls on C02 fluxes.89
6.1.3. Heterotrophic respiration fluxes in arctic tundra ecosystems.91
6.1.4. Spatial variability of heterotrophic respiration fluxes.93
6.2. CHa fluxes.95
6.2.1. Factors regulating CHa fluxes.95
6.2.2. CHa fluxes in comparison with other arctic tundra sites.97
6.2.3. CHa fluxes in comparison with earlier studies from Samoylov Island.99
6.2.4. CHa flux differences on the microscale.102
6.3. C02 and CHa budgets in the polygonal tundra.104
7. CONCLUSION AND OUTLOOK.107
REFERENCES.Ill
ACKNOWLEDGEMENTS.127
4 |
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| spelling | Eckhardt, Tim 1986- Verfasser (DE-588)1139651862 aut Partitioning carbon fluxes in a permafrost landscape vorgelegt von Tim Eckhardt aus Hamburg Hamburg 2017 128 Seiten Illustrationen, Diagramme txt rdacontent n rdamedia nc rdacarrier Hamburger bodenkundliche Arbeiten Band 87 Dissertation Universität Hamburg 2017 Text englisch, Zusammenfassung in deutscher und englischer Sprache Dauerfrostgebiet (DE-588)4148908-1 gnd rswk-swf Bodenatmung (DE-588)4389796-4 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Dauerfrostgebiet (DE-588)4148908-1 s Bodenatmung (DE-588)4389796-4 s DE-604 Hamburger bodenkundliche Arbeiten Band 87 (DE-604)BV000019547 87 HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=029891014&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Eckhardt, Tim 1986- Partitioning carbon fluxes in a permafrost landscape Hamburger bodenkundliche Arbeiten Dauerfrostgebiet (DE-588)4148908-1 gnd Bodenatmung (DE-588)4389796-4 gnd |
| subject_GND | (DE-588)4148908-1 (DE-588)4389796-4 (DE-588)4113937-9 |
| title | Partitioning carbon fluxes in a permafrost landscape |
| title_auth | Partitioning carbon fluxes in a permafrost landscape |
| title_exact_search | Partitioning carbon fluxes in a permafrost landscape |
| title_full | Partitioning carbon fluxes in a permafrost landscape vorgelegt von Tim Eckhardt aus Hamburg |
| title_fullStr | Partitioning carbon fluxes in a permafrost landscape vorgelegt von Tim Eckhardt aus Hamburg |
| title_full_unstemmed | Partitioning carbon fluxes in a permafrost landscape vorgelegt von Tim Eckhardt aus Hamburg |
| title_short | Partitioning carbon fluxes in a permafrost landscape |
| title_sort | partitioning carbon fluxes in a permafrost landscape |
| topic | Dauerfrostgebiet (DE-588)4148908-1 gnd Bodenatmung (DE-588)4389796-4 gnd |
| topic_facet | Dauerfrostgebiet Bodenatmung Hochschulschrift |
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