CO2 Fluxes from Different Vegetation Communities on a Peatland Ecosystem
- 453 Downloads
Although most studies find temperature, soil moisture and water table to be important environmental factors that affect peatland carbon dynamics, the role of vegetation communities has been investigated less. Therefore, this study investigates whether peatland ecosystems produce heterogeneous CO2 fluxes due to differences in vegetation community. In addition, the study also examines which major environmental factors influence this vegetation. To achieve the aims of this study, four sites with different vegetation communities were established in a semi-natural peatland ecosystem in Poland. CO2 flux measurements were carried out using a closed dynamic chamber system. Measurement campaigns were carried out from April until December 2008, every 2–3 weeks. Measured ecosystem respiration (Reco) and net ecosystem exchange (NEE) rates showed daily and seasonal variation at all investigated sites. Reco presented a strong dependence on soil temperature at the 5 cm depth, while NEE showed a strong dependence on solar radiation. The mean temperature sensitivity (Q10) for the four sites ranged between 3.17 and 8.3. The highest NEE and Reco values were obtained at the site represented by Caricetum elatae and the lowest NEE and Reco at the site represented by Calamagrostietum neglectae.
KeywordsChamber method Ecosystem respiration Net ecosystem exchange Q10 – temperature sensitivity, LAI – leaf area index
This work was supported by the EU FP6 Project “GREENFLUX”, MTKD-CT-2006-042445, the project of Polish Ministry of Science No. 752/N-COST/2010/0 and by the Ministry of Education, Youth and Sports of the Czech Republic within the National Sustainability Program I (NPU I), grant number LO1415. We would like to thank Mr. Ryan McGloin for the linguistic revision.
- Barber KE (1981) Peat stratigraphy and climatic change: a palaeoecological test of the theory of cyclic peat bog regeneration. Balkema, RotterdamGoogle Scholar
- Chojnicki B, Michalak M, Acosta M, Juszczak R, Augustin J, Drösler M, Olejnik J (2010) Measurements of carbon dioxide fluxes by chamber method at the Rzecin wetland ecosystem, Poland. Polish Journal of Environmental Studies 19(2):283–291Google Scholar
- Clymo RS (1983) Peat. In: Gore AJP (ed) Ecosystems of the world, 4A. Mires: swamp, bog, fen and moor, Generall studies. Elsevier, Amsterdam, pp 159–224Google Scholar
- Drösler M (2005) Trace gas exchange and climatic relevance of bog ecosystem, Southern Germany. PhD Dissertation, Lehrstuhl für Vegetationsokologie, Department für Ökologie, Technischen Universität MünchenGoogle Scholar
- IPCC (2007) Climate change 2007: the physical science basis. Contribution of working group I to the fourth assessment report of the intergovernmental panel on climate change. In: Solomon S, Qin D, Manning M, Chen Z, Marquis M, Averyt KB, Tingor M, Miller HL (eds) . Cambridge University Press, Cambridge 996 ppGoogle Scholar
- Juszczak R, Acosta M, Olejnik J (2012) Comparison of daytime and nighttime ecosystem respiration measured by the closed chamber technique on a temperate mire in Poland. Polish Journal of Environmental Studies 21(3):643–658Google Scholar
- Linder S, Troeng E (1981) The seasonal variation in stem and coarse root respiration of a 20-year-old scots pine (Pinus sylvestris L.). In: Tranquillini W, eds, Dickenwachstum der Bäume. Mitt Forstl Bundesversuchsanst Wien 142:125–140Google Scholar
- Matuszkiewicz W (2007) Przewodnik do oznaczania zbiorowisk roślinnych Polski. Warszawa: Wydawnictwo Naukowe PWN, ISBN 978-83-01-14439-5. (in Polish)Google Scholar
- Mitsch WJ, Gosselink JG (eds) (1993) Wetlands, 2nd edn. Van Nostrand Reinhold, New YorkGoogle Scholar
- Silvola J, Aaltonen H (1984) Water content and photosynthesis in the peat mosses Sphagnum fuscum and S. angustifolium. Annales Botanici Fennici 21:1–6Google Scholar