Articles | Volume 17, issue 24
https://doi.org/10.5194/bg-17-6341-2020
https://doi.org/10.5194/bg-17-6341-2020
Research article
 | 
15 Dec 2020
Research article |  | 15 Dec 2020

Vertical partitioning of CO2 production in a forest soil

Patrick Wordell-Dietrich, Anja Wotte, Janet Rethemeyer, Jörg Bachmann, Mirjam Helfrich, Kristina Kirfel, Christoph Leuschner, and Axel Don

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Cited articles

Agnelli, A., Ascher, J., Corti, G., Ceccherini, M. T., Nannipieri, P., and Pietramellara, G.: Distribution of microbial communities in a forest soil profile investigated by microbial biomass, soil respiration and DGGE of total and extracellular DNA, Soil Biol. Biochem., 36, 859–868, https://doi.org/10.1016/j.soilbio.2004.02.004, 2004. a
Angst, G., John, S., Mueller, C. W., Kögel-Knabner, I., and Rethemeyer, J.: Tracing the sources and spatial distribution of organic carbon in subsoils using a multi-biomarker approach, Sci. Rep., 6, 29478, https://doi.org/10.1038/srep29478, 2016. a
Baldocchi, D., Tang, J., and Xu, L.: How switches and lags in biophysical regulators affect spatial-temporal variation of soil respiration in an oak-grass savanna, J. Geophys. Res.-Biogeo., 111, G2, https://doi.org/10.1029/2005JG000063, 2006. a
Batjes, N. H.: Total carbon and nitrogen in the soils of the world, Europ. J. Soil Sci., 65, 10–21, https://doi.org/10.1111/ejss.12114_2, 2014. a, b
Bond-Lamberty, B. and Thomson, A.: Temperature-associated increases in the global soil respiration record, Nature, 464, 579–582, https://doi.org/10.1038/nature08930, 2010. a
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Short summary
The release of CO2 from soils, known as soil respiration, plays a major role in the global carbon cycle. However, the contributions of different soil depths or the sources of soil CO2 have hardly been studied. We quantified the CO2 production for different soil layers (up to 1.5 m) in three soil profiles for 2 years. We found that 90 % of CO2 production occurs in the first 30 cm of the soil profile, and that the CO2 originated from young carbon sources, as revealed by radiocarbon measurements.
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