Articles | Volume 20, issue 15
https://doi.org/10.5194/bg-20-3151-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-20-3151-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
01 Aug 2023
Research article |
| 01 Aug 2023
| 01 Aug 2023
How well does ramped thermal oxidation quantify the age distribution of soil carbon? Assessing thermal stability of physically and chemically fractionated soil organic matter
Biogeochemical Processes Department, Max Planck Institute for
Biogeochemistry, 07745 Jena, Germany
Department of Environmental Systems Science, ETH Zürich,
8092 Zurich, Switzerland
Marion Schrumpf
Biogeochemical Processes Department, Max Planck Institute for
Biogeochemistry, 07745 Jena, Germany
Alison Hoyt
Earth System Science, Stanford University, Stanford, CA 94305, USA
Carlos A. Sierra
Biogeochemical Processes Department, Max Planck Institute for
Biogeochemistry, 07745 Jena, Germany
Department of Ecology, Swedish University of Agricultural Sciences,
Uppsala, 750 07, Sweden
Sebastian Doetterl
Department of Environmental Systems Science, ETH Zürich,
8092 Zurich, Switzerland
Valier Galy
Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA
Susan Trumbore
Biogeochemical Processes Department, Max Planck Institute for
Biogeochemistry, 07745 Jena, Germany
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Adriana Simonetti, Raquel Fernandes Araujo, Carlos Henrique Souza Celes, Flávia Ranara da Silva e Silva, Joaquim dos Santos, Niro Higuchi, Susan Trumbore, and Daniel Magnabosco Marra
Biogeosciences, 20, 3651–3666, https://doi.org/10.5194/bg-20-3651-2023, https://doi.org/10.5194/bg-20-3651-2023, 2023
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Agustín Sarquis and Carlos A. Sierra
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Song Wang, Carlos Sierra, Yiqi Luo, Jinsong Wang, Weinan Chen, Yahai Zhang, Aizhong Ye, and Shuli Niu
Biogeosciences Discuss., https://doi.org/10.5194/bg-2023-33, https://doi.org/10.5194/bg-2023-33, 2023
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Andrea Scheibe, Carlos A. Sierra, and Marie Spohn
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Lin Yu, Silvia Caldararu, Bernhard Ahrens, Thomas Wutzler, Marion Schrumpf, Julian Helfenstein, Chiara Pistocchi, and Sönke Zaehle
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Thomas Wutzler, Lin Yu, Marion Schrumpf, and Sönke Zaehle
Geosci. Model Dev., 15, 8377–8393, https://doi.org/10.5194/gmd-15-8377-2022, https://doi.org/10.5194/gmd-15-8377-2022, 2022
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Soil microbes process soil organic matter and affect carbon storage and plant nutrition at the ecosystem scale. We hypothesized that decadal dynamics is constrained by the ratios of elements in litter inputs, microbes, and matter and that microbial community optimizes growth. This allowed the SESAM model to descibe decadal-term carbon sequestration in soils and other biogeochemical processes explicitly accounting for microbial processes but without its problematic fine-scale parameterization.
Jeffrey Prescott Beem-Miller, Craig Rasmussen, Alison May Hoyt, Marion Schrumpf, Georg Guggenberger, and Susan Trumbore
EGUsphere, https://doi.org/10.5194/egusphere-2022-1083, https://doi.org/10.5194/egusphere-2022-1083, 2022
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We compared the age of persistent soil organic matter as well as active emissions of carbon dioxide from soils across a gradient of climate and geology. We found that clay minerals are more important than mean annual temperature for both persistent and actively cycling soil carbon, and that they may attenuate the sensitivity of soil organic matter decomposition to temperature. Accounting for geology and soil development could therefore improve estimates of soil carbon stocks and changes.
Rachael Akinyede, Martin Taubert, Marion Schrumpf, Susan Trumbore, and Kirsten Küsel
Biogeosciences, 19, 4011–4028, https://doi.org/10.5194/bg-19-4011-2022, https://doi.org/10.5194/bg-19-4011-2022, 2022
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Carlos A. Sierra, Verónika Ceballos-Núñez, Henrik Hartmann, David Herrera-Ramírez, and Holger Metzler
Biogeosciences, 19, 3727–3738, https://doi.org/10.5194/bg-19-3727-2022, https://doi.org/10.5194/bg-19-3727-2022, 2022
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Empirical work that estimates the age of respired CO2 from vegetation tissue shows that it may take from years to decades to respire previously produced photosynthates. However, many ecosystem models represent respiration processes in a form that cannot reproduce these observations. In this contribution, we attempt to provide compelling evidence, based on recent research, with the aim to promote a change in the predominant paradigm implemented in ecosystem models.
Agustín Sarquis, Ignacio Andrés Siebenhart, Amy Theresa Austin, and Carlos A. Sierra
Earth Syst. Sci. Data, 14, 3471–3488, https://doi.org/10.5194/essd-14-3471-2022, https://doi.org/10.5194/essd-14-3471-2022, 2022
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Plant litter breakdown in aridlands is driven by processes different from those in more humid ecosystems. A better understanding of these processes will allow us to make better predictions of future carbon cycling. We have compiled aridec, a database of plant litter decomposition studies in aridlands and tested some modeling applications for potential users. Aridec is open for use and collaboration, and we hope it will help answer newer and more important questions as the database develops.
Katherine E. O. Todd-Brown, Rose Z. Abramoff, Jeffrey Beem-Miller, Hava K. Blair, Stevan Earl, Kristen J. Frederick, Daniel R. Fuka, Mario Guevara Santamaria, Jennifer W. Harden, Katherine Heckman, Lillian J. Heran, James R. Holmquist, Alison M. Hoyt, David H. Klinges, David S. LeBauer, Avni Malhotra, Shelby C. McClelland, Lucas E. Nave, Katherine S. Rocci, Sean M. Schaeffer, Shane Stoner, Natasja van Gestel, Sophie F. von Fromm, and Marisa L. Younger
Biogeosciences, 19, 3505–3522, https://doi.org/10.5194/bg-19-3505-2022, https://doi.org/10.5194/bg-19-3505-2022, 2022
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Moritz Mainka, Laura Summerauer, Daniel Wasner, Gina Garland, Marco Griepentrog, Asmeret Asefaw Berhe, and Sebastian Doetterl
Biogeosciences, 19, 1675–1689, https://doi.org/10.5194/bg-19-1675-2022, https://doi.org/10.5194/bg-19-1675-2022, 2022
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The largest share of terrestrial carbon is stored in soils, making them highly relevant as regards global change. Yet, the mechanisms governing soil carbon stabilization are not well understood. The present study contributes to a better understanding of these processes. We show that qualitative changes in soil organic matter (SOM) co-vary with alterations of the soil matrix following soil weathering. Hence, the type of SOM that is stabilized in soils might change as soils develop.
Pengzhi Zhao, Daniel Joseph Fallu, Sara Cucchiaro, Paolo Tarolli, Clive Waddington, David Cockcroft, Lisa Snape, Andreas Lang, Sebastian Doetterl, Antony G. Brown, and Kristof Van Oost
Biogeosciences, 18, 6301–6312, https://doi.org/10.5194/bg-18-6301-2021, https://doi.org/10.5194/bg-18-6301-2021, 2021
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We investigate the factors controlling the soil organic carbon (SOC) stability and temperature sensitivity of abandoned prehistoric agricultural terrace soils. Results suggest that the burial of former topsoil due to terracing provided an SOC stabilization mechanism. Both the soil C : N ratio and SOC mineral protection regulate soil SOC temperature sensitivity. However, which mechanism predominantly controls SOC temperature sensitivity depends on the age of the buried terrace soils.
Laura Summerauer, Philipp Baumann, Leonardo Ramirez-Lopez, Matti Barthel, Marijn Bauters, Benjamin Bukombe, Mario Reichenbach, Pascal Boeckx, Elizabeth Kearsley, Kristof Van Oost, Bernard Vanlauwe, Dieudonné Chiragaga, Aimé Bisimwa Heri-Kazi, Pieter Moonen, Andrew Sila, Keith Shepherd, Basile Bazirake Mujinya, Eric Van Ranst, Geert Baert, Sebastian Doetterl, and Johan Six
SOIL, 7, 693–715, https://doi.org/10.5194/soil-7-693-2021, https://doi.org/10.5194/soil-7-693-2021, 2021
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We present a soil mid-infrared library with over 1800 samples from central Africa in order to facilitate soil analyses of this highly understudied yet critical area. Together with an existing continental library, we demonstrate a regional analysis and geographical extrapolation to predict total carbon and nitrogen. Our results show accurate predictions and highlight the value that the data contribute to existing libraries. Our library is openly available for public use and for expansion.
Benjamin Bukombe, Peter Fiener, Alison M. Hoyt, Laurent K. Kidinda, and Sebastian Doetterl
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Through a laboratory incubation experiment, we investigated the spatial patterns of specific maximum heterotrophic respiration in tropical African mountain forest soils developed from contrasting parent material along slope gradients. We found distinct differences in soil respiration between soil depths and geochemical regions related to soil fertility and the chemistry of the soil solution. The topographic origin of our samples was not a major determinant of the observed rates of respiration.
Sebastian Doetterl, Rodrigue K. Asifiwe, Geert Baert, Fernando Bamba, Marijn Bauters, Pascal Boeckx, Benjamin Bukombe, Georg Cadisch, Matthew Cooper, Landry N. Cizungu, Alison Hoyt, Clovis Kabaseke, Karsten Kalbitz, Laurent Kidinda, Annina Maier, Moritz Mainka, Julia Mayrock, Daniel Muhindo, Basile B. Mujinya, Serge M. Mukotanyi, Leon Nabahungu, Mario Reichenbach, Boris Rewald, Johan Six, Anna Stegmann, Laura Summerauer, Robin Unseld, Bernard Vanlauwe, Kristof Van Oost, Kris Verheyen, Cordula Vogel, Florian Wilken, and Peter Fiener
Earth Syst. Sci. Data, 13, 4133–4153, https://doi.org/10.5194/essd-13-4133-2021, https://doi.org/10.5194/essd-13-4133-2021, 2021
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The African Tropics are hotspots of modern-day land use change and are of great relevance for the global carbon cycle. Here, we present data collected as part of the DFG-funded project TropSOC along topographic, land use, and geochemical gradients in the eastern Congo Basin and the Albertine Rift. Our database contains spatial and temporal data on soil, vegetation, environmental properties, and land management collected from 136 pristine tropical forest and cropland plots between 2017 and 2020.
Mario Reichenbach, Peter Fiener, Gina Garland, Marco Griepentrog, Johan Six, and Sebastian Doetterl
SOIL, 7, 453–475, https://doi.org/10.5194/soil-7-453-2021, https://doi.org/10.5194/soil-7-453-2021, 2021
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In deeply weathered tropical rainforest soils of Africa, we found that patterns of soil organic carbon stocks differ between soils developed from geochemically contrasting parent material due to differences in the abundance of organo-mineral complexes, the presence/absence of chemical stabilization mechanisms of carbon with minerals and the presence of fossil organic carbon from sedimentary rocks. Physical stabilization mechanisms by aggregation provide additional protection of soil carbon.
Joseph Tamale, Roman Hüppi, Marco Griepentrog, Laban Frank Turyagyenda, Matti Barthel, Sebastian Doetterl, Peter Fiener, and Oliver van Straaten
SOIL, 7, 433–451, https://doi.org/10.5194/soil-7-433-2021, https://doi.org/10.5194/soil-7-433-2021, 2021
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Soil greenhouse gas (GHG) fluxes were measured monthly from nitrogen (N), phosphorous (P), N and P, and control plots of the first nutrient manipulation experiment located in an African pristine tropical forest using static chambers. The results suggest (1) contrasting soil GHG responses to nutrient addition, hence highlighting the complexity of the tropical forests, and (2) that the feedback of tropical forests to the global soil GHG budget could be altered by changes in N and P availability.
Florian Wilken, Peter Fiener, Michael Ketterer, Katrin Meusburger, Daniel Iragi Muhindo, Kristof van Oost, and Sebastian Doetterl
SOIL, 7, 399–414, https://doi.org/10.5194/soil-7-399-2021, https://doi.org/10.5194/soil-7-399-2021, 2021
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This study demonstrates the usability of fallout radionuclides 239Pu and 240Pu as a tool to assess soil degradation processes in tropical Africa, which is particularly valuable in regions with limited infrastructure and challenging monitoring conditions for landscape-scale soil degradation monitoring. The study shows no indication of soil redistribution in forest sites but substantial soil redistribution in cropland (sedimentation >40 cm in 55 years) with high variability.
Sophie F. von Fromm, Alison M. Hoyt, Markus Lange, Gifty E. Acquah, Ermias Aynekulu, Asmeret Asefaw Berhe, Stephan M. Haefele, Steve P. McGrath, Keith D. Shepherd, Andrew M. Sila, Johan Six, Erick K. Towett, Susan E. Trumbore, Tor-G. Vågen, Elvis Weullow, Leigh A. Winowiecki, and Sebastian Doetterl
SOIL, 7, 305–332, https://doi.org/10.5194/soil-7-305-2021, https://doi.org/10.5194/soil-7-305-2021, 2021
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We investigated various soil and climate properties that influence soil organic carbon (SOC) concentrations in sub-Saharan Africa. Our findings indicate that climate and geochemistry are equally important for explaining SOC variations. The key SOC-controlling factors are broadly similar to those for temperate regions, despite differences in soil development history between the two regions.
Marion Schrumpf, Klaus Kaiser, Allegra Mayer, Günter Hempel, and Susan Trumbore
Biogeosciences, 18, 1241–1257, https://doi.org/10.5194/bg-18-1241-2021, https://doi.org/10.5194/bg-18-1241-2021, 2021
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A large amount of organic carbon (OC) in soil is protected against decay by bonding to minerals. We studied the release of mineral-bonded OC by NaF–NaOH extraction and H2O2 oxidation. Unexpectedly, extraction and oxidation removed mineral-bonded OC at roughly constant portions and of similar age distributions, irrespective of mineral composition, land use, and soil depth. The results suggest uniform modes of interactions between OC and minerals across soils in quasi-steady state with inputs.
Carlos A. Sierra, Susan E. Crow, Martin Heimann, Holger Metzler, and Ernst-Detlef Schulze
Biogeosciences, 18, 1029–1048, https://doi.org/10.5194/bg-18-1029-2021, https://doi.org/10.5194/bg-18-1029-2021, 2021
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The climate benefit of carbon sequestration (CBS) is a metric developed to quantify avoided warming by two separate processes: the amount of carbon drawdown from the atmosphere and the time this carbon is stored in a reservoir. This metric can be useful for quantifying the role of forests and soils for climate change mitigation and to better quantify the benefits of carbon removals by sinks.
Simon Baumgartner, Matti Barthel, Travis William Drake, Marijn Bauters, Isaac Ahanamungu Makelele, John Kalume Mugula, Laura Summerauer, Nora Gallarotti, Landry Cizungu Ntaboba, Kristof Van Oost, Pascal Boeckx, Sebastian Doetterl, Roland Anton Werner, and Johan Six
Biogeosciences, 17, 6207–6218, https://doi.org/10.5194/bg-17-6207-2020, https://doi.org/10.5194/bg-17-6207-2020, 2020
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Soil respiration is an important carbon flux and key process determining the net ecosystem production of terrestrial ecosystems. The Congo Basin lacks studies quantifying carbon fluxes. We measured soil CO2 fluxes from different forest types in the Congo Basin and were able to show that, even though soil CO2 fluxes are similarly high in lowland and montane forests, the drivers were different: soil moisture in montane forests and C availability in the lowland forests.
Laurent K. Kidinda, Folasade K. Olagoke, Cordula Vogel, Karsten Kalbitz, and Sebastian Doetterl
SOIL Discuss., https://doi.org/10.5194/soil-2020-80, https://doi.org/10.5194/soil-2020-80, 2020
Preprint withdrawn
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In deeply weathered tropical rainforest soils of Africa, we found that patterns of microbial processes differ between soils developed from geochemically contrasting parent materials due to differences in resource availability. Across investigated geochemical regions and soil depths, soil microbes were P-limited rather than N-limited. Topsoil microbes were more C-limited than their subsoil counterparts but inversely P-limited.
Cited articles
Anderson, D. W. and Paul, E. A.: Organo-Mineral Complexes and Their Study by
Radiocarbon Dating, Soil Sci. Soc. Am. J., 48, 298–301,
https://doi.org/10.2136/sssaj1984.03615995004800020014x, 1984.
Angst, G., Mueller, K. E., Nierop, K. G. J., and Simpson, M. J.: Plant- or
microbial-derived? A review on the molecular composition of stabilized soil
organic matter, Soil Biol. Biochem., 156, 108189,
https://doi.org/10.1016/j.soilbio.2021.108189, 2021.
Baisden, W. T. and Canessa, S.: Using 50 years of soil radiocarbon data to
identify optimal approaches for estimating soil carbon residence times, Nucl.
Instrum. Method. Phys. Res. B, 294, 588–592,
https://doi.org/10.1016/j.nimb.2012.06.021, 2013.
Balesdent, J.: The turnover of soil organic fractions estimated by
radiocarbon dating, Sci. Total Environ., 62, 405–408,
https://doi.org/10.1016/0048-9697(87)90528-6, 1987.
Basile-Doelsch, I., Balesdent, J., and Pellerin, S.: Reviews and syntheses:
The mechanisms underlying carbon storage in soil, Biogeosciences, 17,
5223–5242, https://doi.org/10.5194/bg-17-5223-2020, 2020.
Bianchi, T. S., Galy, V., Rosenheim, B. E., Shields, M., Cui, X., and Van
Metre, P.: Paleoreconstruction of organic carbon inputs to an oxbow lake in
the Mississippi River watershed: Effects of dam construction and land use
change on regional inputs, Geophys. Res. Lett., 42, 7983–7991,
https://doi.org/10.1002/2015GL065595, 2015.
Bolin, B. and Rodhe, H.: A note on the concepts of age distribution and
transit time in natural reservoirs, Tellus, 25, 58–62,
https://doi.org/10.1111/j.2153-3490.1973.tb01594.x, 1973.
Bosatta, E. and Ågren, G. I.: Theoretical analysis of decomposition of
heterogeneous substrates, Soil Biol. Biochem., 17, 601–610,
https://doi.org/10.1016/0038-0717(85)90035-5, 1985.
Castanha, C., Trumbore, S., and Amundson, R.: Methods of separating soil
carbon pools affect the chemistry and turnover time of isolated fractions,
Radiocarbon, 50, 83–97, https://doi.org/10.1017/S0033822200043381, 2008.
Chanca, I., Trumbore, S., Macario, K., and Sierra, C. A.: Probability
Distributions of Radiocarbon in Open Linear Compartmental Systems at
Steady-State, J. Geophys. Res.-Biogeo., 127, 1–23,
https://doi.org/10.1029/2021JG006673, 2022.
Cotrufo, M. F., Ranalli, M. G., Haddix, M. L., Six, J., and Lugato, E.: Soil
carbon storage informed by particulate and mineral-associated organic
matter, Nat. Geosci., 12, 989–994, https://doi.org/10.1038/s41561-019-0484-6,
2019.
Cusack, D. F., Chadwick, O. A., Hockaday, W. C., and Vitousek, P. M.:
Mineralogical controls on soil black carbon preservation, Global Biogeochem.
Cy., 26, 1–10, https://doi.org/10.1029/2011GB004109, 2012.
Dahiya, J. B. and Rana, S.: Thermal degradation and morphological studies on
cotton cellulose modified with various arylphosphorodichloridites, Polym.
Int., 53, 995–1002, https://doi.org/10.1002/pi.1500, 2004.
De Coninck, F.: Major mechanisms in formation of spodic horizons, Geoderma,
24, 101–128, 1980.
Feng, X. and Simpson, M. J.: Temperature responses of individual soil
organic matter components, J. Geophys. Res.-Biogeo., 113, 1–14,
https://doi.org/10.1029/2008JG000743, 2008.
González-Pérez, J. A., Chabbi, A., de la Rosa, J. M., Rumpel, C.,
and González-Vila, F. J.: Evolution of organic matter in
lignite-containing sediments revealed by analytical pyrolysis (Py-GC-MS),
Org. Geochem., 53, 119–130, https://doi.org/10.1016/j.orggeochem.2012.08.001,
2012.
Grandy, A. S., Strickland, M. S., Lauber, C. L., Bradford, M. A., and
Fierer, N.: The influence of microbial communities, management, and soil
texture on soil organic matter chemistry, Geoderma, 150, 278–286,
https://doi.org/10.1016/j.geoderma.2009.02.007, 2009.
Grant, K. E., Galy, V. V., Chadwick, O. A., and Derry, L. A.: Thermal
oxidation of carbon in organic matter rich volcanic soils: insights into SOC
age differentiation and mineral stabilization, Biogeochemistry, 144,
291–304, https://doi.org/10.1007/s10533-019-00586-1, 2019.
Grant, K. E., Hilton, R. G., and Galy, V.: Global patterns of radiocarbon
depletion in subsoil linked to rock-derived organic carbon, Geochem. Perspect.
Lett., 25, 36–40, 2023.
Gregorich, E. G., Beare, M. H., McKim, U. F., and Skjemstad, J. O.: Chemical
and Biological Characteristics of Physically Uncomplexed Organic Matter,
Soil Sci. Soc. Am. J., 70, 975–985,
https://doi.org/10.2136/sssaj2005.0116, 2006.
Heckman, K., Lawrence, C. R., and Harden, J. W.: A sequential selective
dissolution method to quantify storage and stability of organic carbon
associated with Al and Fe hydroxide phases, Geoderma, 312, 24–35,
https://doi.org/10.1016/j.geoderma.2017.09.043, 2018a.
Heckman, K., Throckmorton, H., Horwath, W., Swanston, C., and Rasmussen, C.:
Variation in the Molecular Structure and Radiocarbon Abundance of
Mineral-Associated Organic Matter across a Lithosequence of Forest Soils,
Soil Syst., 2, 36, https://doi.org/10.3390/soilsystems2020036, 2018b.
Heckman, K., Hicks Pries, C. E., Lawrence, C. R., Rasmussen, C., Crow, S.
E., Hoyt, A. M., von Fromm, S. F., Shi, Z., Stoner, S., McGrath, C.,
Beem-Miller, J., Berhe, A. A., Blankinship, J. C., Keiluweit, M.,
Marín-Spiotta, E., Monroe, J. G., Plante, A. F., Schimel, J., Sierra,
C. A., Thompson, A., and Wagai, R.: Beyond bulk: Density fractions explain
heterogeneity in global soil carbon abundance and persistence, Glob. Change
Biol., 28, 1178–1196, https://doi.org/10.1111/gcb.16023, 2022.
Helfrich, M., Flessa, H., Mikutta, R., Dreves, A., and Ludwig, B.:
Comparison of chemical fractionation methods for isolating stable soil
organic carbon pools, Eur. J. Soil Sci., 58, 1316–1329,
https://doi.org/10.1111/j.1365-2389.2007.00926.x, 2007.
Hemingway, J. D.: rampedpyrox: Open-source tools for thermoanalytical data
analysis, https://github.com/FluvialSeds/rampedpyrox (last access: 20 June 2022), 2016.
Hemingway, J. D., Rothman, D. H., Rosengard, S. Z., and Galy, V. V.:
Technical note: An inverse method to relate organic carbon reactivity to
isotope composition from serial oxidation, Biogeosciences, 14, 5099–5114,
https://doi.org/10.5194/bg-14-5099-2017, 2017.
Hemingway, J. D., Rothman, D. H., Grant, K. E., Rosengard, S. Z., Eglinton,
T. I., Derry, L. A., and Galy, V. V.: Mineral protection regulates long-term
global preservation of natural organic carbon, Nature, 570, 228–231,
https://doi.org/10.1038/s41586-019-1280-6, 2019.
Huang, X., Jiang, H., Li, Y., Ma, Y., Tang, H., Ran, W., and Shen, Q.: The
role of poorly crystalline iron oxides in the stability of soil
aggregate-associated organic carbon in a rice-wheat cropping system,
Geoderma, 279, 1–10, https://doi.org/10.1016/j.geoderma.2016.05.011, 2016.
Jagadamma, S., Lal, R., Ussiri, D. A. N., Trumbore, S. E., and Mestelan, S.:
Evaluation of structural chemistry and isotopic signatures of refractory
soil organic carbon fraction isolated by wet oxidation methods,
Biogeochemistry, 98, 29–44, https://doi.org/10.1007/s10533-009-9374-0,
2010.
Kaiser, K., Mikutta, R., and Guggenberger, G.: Increased Stability of
Organic Matter Sorbed to Ferrihydrite and Goethite on Aging, Soil Sci.
Soc. Am. J., 71, 711–719,
https://doi.org/10.2136/sssaj2006.0189, 2007.
Khomo, L., Trumbore, S., Bern, C. R., and Chadwick, O. A.: Timescales of
carbon turnover in soils with mixed crystalline mineralogies, Soil, 3,
17–30, https://doi.org/10.5194/soil-3-17-2017, 2017.
Kleber, M., Bourg, I. C., Coward, E. K., Hansel, C. M., Myneni, S. C. B.,
and Nunan, N.: Dynamic interactions at the mineral–organic matter
interface, Nat. Rev. Earth Environ., 1, 0123456789,
https://doi.org/10.1038/s43017-021-00162-y, 2021.
Lavallee, J. M., Soong, J. L., and Cotrufo, M. F.: Conceptualizing soil
organic matter into particulate and mineral-associated forms to address
global change in the 21st century, Glob. Change Biol., 26, 261–273,
https://doi.org/10.1111/gcb.14859, 2020.
Lehmann, J. and Kleber, M.: The contentious nature of soil organic matter,
Nature, 528, 60–68, https://doi.org/10.1038/nature16069, 2015.
Leifeld, J. and von Lützow, M.: Chemical and microbial activation
energies of soil organic matter decomposition, Biol. Fertil. Soils, 50,
147–153, https://doi.org/10.1007/s00374-013-0822-6, 2014.
Metzler, H., Müller, M., and Sierra, C. A.: Transit-time and age
distributions for nonlinear time-dependent compartmental systems, P. Natl.
Acad. Sci. USA, 115, 1150–1155, https://doi.org/10.1073/pnas.1705296115,
2018.
Mikutta, R. and Kaiser, K.: Organic matter bound to mineral surfaces:
Resistance to chemical and biological oxidation, Soil Biol. Biochem., 43,
1738–1741, https://doi.org/10.1016/j.soilbio.2011.04.012, 2011.
Natali, C., Bianchini, G., and Carlino, P.: Thermal stability of soil carbon
pools: Inferences on soil nature and evolution, Thermochim. Ac., 683,
178478, https://doi.org/10.1016/j.tca.2019.178478, 2020.
Nkwain, F. N., Demyan, M. S., Rasche, F., Dignac, M. F., Schulz, E.,
Kätterer, T., Müller, T., and Cadisch, G.: Coupling pyrolysis with
mid-infrared spectroscopy (Py-MIRS) to fingerprint soil organic matter bulk
chemistry, J. Anal. Appl. Pyrolysis., 133, 176–184,
https://doi.org/10.1016/j.jaap.2018.04.004, 2018.
Paul, E. A., Follett, R. F., Leavitt, S. W., Halvorson, A., Peterson, G. A.,
and Lyon, D. J.: Radiocarbon Dating for Determination of Soil Organic Matter
Pool Sizes and Dynamics, Soil Sci. Soc. Am. J., 61,
1058–1067, https://doi.org/10.2136/sssaj1997.03615995006100040011x, 1997.
Plante, A. F., Fernández, J. M., and Leifeld, J.: Application of thermal
analysis techniques in soil science, Geoderma, 153, 1–10,
https://doi.org/10.1016/j.geoderma.2009.08.016, 2009.
Plante, A. F., Fernández, J. M., Haddix, M. L., Steinweg, J. M., and
Conant, R. T.: Biological, chemical and thermal indices of soil organic
matter stability in four grassland soils, Soil Biol. Biochem., 43, 1051–1058,
https://doi.org/10.1016/j.soilbio.2011.01.024, 2011.
Plante, A. F., Beaupré, S. R., Roberts, M. L., and Baisden, T.:
Distribution of Radiocarbon Ages in Soil Organic Matter by Thermal
Fractionation, Radiocarbon, 55, 1077–1083,
https://doi.org/10.1017/s0033822200058215, 2013.
Quénéa, K., Derenne, S., González-Vila, F. J.,
González-Pérez, J. A., Mariotti, A., and Largeau, C.: Double-shot
pyrolysis of the non-hydrolysable organic fraction isolated from a sandy
forest soil (Landes de Gascogne, South-West France): Comparison with
classical Curie point pyrolysis, J. Anal. Appl. Pyrolysis., 76, 271–279,
https://doi.org/10.1016/j.jaap.2005.12.007, 2006.
Rasmussen, C., Throckmorton, H., Liles, G., Heckman, K., Meding, S., and
Horwath, W. R.: Controls on soil organic carbon partitioning and
stabilization in the California Sierra Nevada, Soil Syst., 2, 1–18,
https://doi.org/10.3390/soilsystems2030041, 2018.
Rennert, T. and Herrmann, L.: Sea spray and land use effects on clay
minerals and organic matter of soils on machair (Harris, Scotland), Geoderma
Reg., 23, e00339, https://doi.org/10.1016/j.geodrs.2020.e00339, 2020.
Rennert, T. and Herrmann, L.: Thermal-gradient analysis of soil organic
matter using an elemental analyser – A tool for qualitative
characterization?, Geoderma, 425, 116085,
https://doi.org/10.1016/j.geoderma.2022.116085, 2022.
Rosenheim, B. E. and Galy, V.: Direct measurement of riverine particulate
organic carbon age structure, Geophys. Res. Lett., 39, 1–6,
https://doi.org/10.1029/2012GL052883, 2012.
Rosenheim, B. E., Day, M. B., Domack, E., Schrum, H., Benthien, A., and
Hayes, J. M.: Antarctic sediment chronology by programmed-temperature
pyrolysis: Methodology and data treatment, Geochem. Geophy.
Geosy., 9, 1–16, https://doi.org/10.1029/2007GC001816, 2008.
Sanderman, J. and Grandy, S. A.: Ramped thermal analysis for isolating
biologically meaningful soil organic matter fractions with distinct
residence times, Soil, 6, 131–144, https://doi.org/10.5194/soil-6-131-2020,
2020.
Sanderman, J., Baisden, W. T., and Fallon, S.: Redefining the inert organic
carbon pool, Soil Biol. Biochem., 92, 149–152,
https://doi.org/10.1016/j.soilbio.2015.10.005, 2016.
Schrumpf, M., Schulze, E. D., Kaiser, K., and Schumacher, J.: How accurately
can soil organic carbon stocks and stock changes be quantified by soil
inventories?, Biogeosciences, 8, 1193–1212,
https://doi.org/10.5194/bg-8-1193-2011, 2011.
Schrumpf, M., Kaiser, K., Guggenberger, G., Persson, T., Kögel-Knabner,
I., and Schulze, E. D.: Storage and stability of organic carbon in soils as
related to depth, occlusion within aggregates, and attachment to minerals,
Biogeosciences, 10, 1675–1691, https://doi.org/10.5194/bg-10-1675-2013,
2013.
Schrumpf, M., Kaiser, K., Mayer, A., Hempel, G., and Trumbore, S.: Age
distribution, extractability, and stability of mineral-bound organic carbon
in central European soils, Biogeosciences, 18, 1241–1257,
https://doi.org/10.5194/bg-18-1241-2021, 2021.
Schuur, E. A. G., Trumbore, S. E., and Druffel, E. R. M.: Radiocarbon and
Climate Change: Mechanisms, Appl. Laborat. Tech., 1, 1–315, https://doi.org/10.1007/978-3-319-25643-6, 2016.
Seifert, A. G., Trumbore, S., Xu, X., Zhang, D., and Gleixner, G.: Variable
effects of plant colonization on black slate uptake into microbial PLFAs,
Geochim. Cosmochim. Ac., 106, 391–403,
https://doi.org/10.1016/j.gca.2012.12.011, 2013.
Sierra, C. A., Müller, M., and Trumbore, S. E.: Modeling radiocarbon
dynamics in soils: SoilR version 1.1, Geosci. Model. Dev., 7, 1919–1931,
https://doi.org/10.5194/gmd-7-1919-2014, 2014.
Sierra, C. A., Hoyt, A. M., He, Y., and Trumbore, S. E.: Soil Organic Matter
Persistence as a Stochastic Process: Age and Transit Time Distributions of
Carbon in Soils, Global Biogeochem. Cy., 32, 1574–1588,
https://doi.org/10.1029/2018GB005950, 2018.
Sollins, P., Kramer, M. G., Swanston, C., Lajtha, K., Filley, T.,
Aufdenkampe, A. K., Wagai, R., and Bowden, R. D.: Sequential density
fractionation across soils of contrasting mineralogy: Evidence for both
microbial- and mineral-controlled soil organic matter stabilization,
Biogeochemistry, 96, 209–231, https://doi.org/10.1007/s10533-009-9359-z,
2009.
Stoner, S.: ShaneStoner/BGS_ThermalFractionation: Publication, v1.0, Zenodo [data set and code],
https://doi.org/10.5281/zenodo.7998659, 2023.
Torn, M. S., Trumbore, S. E., Chadwick, O. A., Vitousek, P. M., and
Hendricks, D. M.: Mineral control of soil organic carbon and storage and
turnover, Nature, 389, 3601–3603, 1997.
Trumbore, S.: Age of soil organic matter and soil respiration: Radiocarbon
constraints on belowground C dynamics, Ecol. Appl., 10,
399–411, https://doi.org/10.1890/1051-0761(2000)010[0399:AOSOMA]2.0.CO;2,
2000.
Trumbore, S. E.: Comparisons of carbon dynamics in tropical and temperate
soils using radiocarbon measurements, Measurement, 7, 275–290, 1993.
Trumbore, S. E. and Zheng, S.: Comparison of fractionation methods for soil
organic matter 14C analysis, Radiocarbon, 38, 219–229, https://doi.org/10.1017/S0033822200017598, 1996.
Trumbore, S. E., Bonani, G., and Wolfli, W.: The rates of carbon cycling in
several soils from AMS14C measurements of fractionated soil organic matter, in: Soils and the greenhouse effect, Vol. 23, 407–414,
John Wiley and Sons Inc, New York, USA, 575 pp., ISBN 0-471-92358-8, 1990.
von Lützow, M., Kögel-Knabner, I., Ekschmitt, K., Flessa, H.,
Guggenberger, G., Matzner, E., and Marschner, B.: SOM fractionation methods:
Relevance to functional pools and to stabilization mechanisms, Soil Biol.
Biochem., 39, 2183–2207, https://doi.org/10.1016/j.soilbio.2007.03.007,
2007.
Wendeberg, M., Richter, J. M., Rothe, M., and Brand, W. A.: Jena Reference
Air Set (JRAS): A multi-point scale anchor for isotope measurements of CO2 in
air, Atmos. Meas. Tech., 6, 817–822, https://doi.org/10.5194/amt-6-817-2013,
2013.
Williams, E. K., Fogel, M. L., Berhe, A. A., and Plante, A. F.: Distinct
bioenergetic signatures in particulate versus mineral-associated soil
organic matter, Geoderma, 330, 107–116,
https://doi.org/10.1016/j.geoderma.2018.05.024, 2018.
Xu, X., Trumbore, S. E., Zheng, S., Southon, J. R., McDuffee, K. E.,
Luttgen, M., and Liu, J. C.: Modifying a sealed tube zinc reduction method
for preparation of AMS graphite targets: Reducing background and attaining
high precision, Nucl. Instrum. Method. Phys. Res. B, 259, 320–329,
https://doi.org/10.1016/j.nimb.2007.01.175, 2007.
Short summary
Soils store more carbon (C) than any other terrestrial C reservoir, but the processes that control how much C stays in soil, and for how long, are very complex. Here, we used a recent method that involves heating soil in the lab to measure the range of C ages in soil. We found that most C in soil is decades to centuries old, while some stays for much shorter times (days to months), and some is thousands of years old. Such detail helps us to estimate how soil C may react to changing climate.
Soils store more carbon (C) than any other terrestrial C reservoir, but the processes that...
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