Ecosystem productivity has a stronger influence than soil age on surface soil carbon storage across global biomes

TitleEcosystem productivity has a stronger influence than soil age on surface soil carbon storage across global biomes
Publication TypeJournal Article
Year of Publication2022
AuthorsPlaza C., Garcia-Palacios P., Berhe A.A, Barquero J., Bastida F., Png G.K, Rey A., Bardgett R.D, Delgado-Baquerizo M.
JournalCommunications Earth & EnvironmentCommunications Earth & Environment
Volume3
Pagination8
Date PublishedOct
Type of ArticleArticle
Accession NumberWOS:000865057100003
KeywordsAggregate, chronosequence, climate, dynamics, Environmental Sciences & Ecology, Geology, Meteorology & Atmospheric, organic-matter, rates, respiration, Sciences, temperature
Abstract

Interactions between soil organic matter and minerals largely govern the carbon sequestration capacity of soils. Yet, variations in the proportions of free light (unprotected) and mineral-associated (protected) carbon as soil develops in contrasting ecosystems are poorly constrained. Here, we studied 16 long-term chronosequences from six continents and found that the ecosystem type is more important than soil age (centuries to millennia) in explaining the proportion of unprotected and mineral-associated carbon fractions in surface soils across global biomes. Soil carbon pools in highly productive tropical and temperate forests were dominated by the unprotected carbon fraction and were highly vulnerable to reductions in ecosystem productivity and warming. Conversely, soil carbon in low productivity, drier and colder ecosystems was dominated by mineral-protected carbon, and was less responsive to warming. Our findings emphasize the importance of conserving ecosystem productivity to protect carbon stored in surface soils. Soil organic carbon pools in productive tropical and temperate forests are more labile than those in drier colder ecosystems where mineral-protected organic carbon dominates, according to analyses of 16 long-term chronosequences from six continents.

Short TitleCommun. Earth Environ.Commun. Earth Environ.
Alternate JournalCommun. Earth Environ.
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Times Cited: 0
Cited Reference Count: 81
Plaza, Cesar Garcia-Palacios, Pablo Berhe, Asmeret Asefaw Barquero, Jesus Bastida, Felipe Png, G. Kenny Rey, Ana Bardgett, Richard D. Delgado-Baquerizo, Manuel
Delgado-baquerizo, manuel/0000-0002-6499-576x
Ramon y Cajal grants from the Spanish Ministry of Science and Innovation [RYC2018-025483-I, RYC2018-024766-I]; European Union [702057]; Spanish State Plan for Scientific and Technical Research and Innovation (2013-2016) [AGL201675762-R]; Spanish Ministry of Science and Innovation - MCIN/AEI [PID2020-115813RA-I00]; Fondo Europeo de Desarrollo Regional (FEDER); Consejeria de Transformacion Economica, Industria, Conocimiento y Universidades of the Junta de Andalucia (FEDER Andalucia 2014-2020 Objetivo tematico "01-Refuerzo de la investigacion, el desarrollo tecnologico y la innovacion") [P20_00879]; EU [101000224]; CSIC i-LINK +2018 [LINKA20069]; Fundacion Seneca from Murcia Province [19896/GERM/15]; MCIN/AEI [PID2020-114942RB-I00]
M.D.-B. and P.G.-P. were supported by Ramon y Cajal grants from the Spanish Ministry of Science and Innovation (RYC2018-025483-I and RYC2018-024766-I). This project received funding from the European Union's Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement 702057 and the Spanish State Plan for Scientific and Technical Research and Innovation (2013-2016), award ref. AGL201675762-R (AEI/FEDER, UE). M.D.-B. acknowledges support from the Spanish Ministry of Science and Innovation for the I+D+i project PID2020-115813RA-I00 funded by MCIN/AEI/10.13039/501100011033. M.D.-B. is also supported by a project of the Fondo Europeo de Desarrollo Regional (FEDER) and the Consejeria de Transformacion Economica, Industria, Conocimiento y Universidades of the Junta de Andalucia (FEDER Andalucia 2014-2020 Objetivo tematico "01-Refuerzo de la investigacion, el desarrollo tecnologico y la innovacion") associated with the research project P20_00879 (ANDABIOMA). C.P. acknowledges support from the EU H2020 research and innovation programme under grant agreement No 101000224. F.B. acknowledges support from CSIC i-LINK + 2018 (LINKA20069), PID2020-114942RB-I00 funded by MCIN/AEI/10.13039/501100011033 and Fundacion Seneca from Murcia Province (19896/GERM/15). We thank the researchers involved in the CLIMIFUN project for collection of field data and soil samples. We would like to thank Fernando Maestre, Victoria Ochoa and Beatriz Gozalo for their help with lab analyses, Lynn Riedel, Julie Larson, Katy Waechter and Drs. David Buckner and Brian Anacker for their help with soil sampling in the chronosequence from Colorado, and to the City of Boulder Open Space and Mountain Parks for allowing us to conduct these collections. We also thank Melissa Martin for revising the English in this manuscript. We also thank Dr. Santiago Soliveres (University of Alicante, Spain) and Dr. Miguel Berdugo (Pompeu Fabra University, Spain) for helpful comments on an earlier version of the manuscript.

14
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Plaza, C (corresponding author), CSIC, Inst Ciencias Agr ICA, Serrano 115 Bis, Madrid 28006, Spain.; Delgado-Baquerizo, M (corresponding author), CSIC, Inst Recursos Nat & Agrobiol Sevilla IRNAS, Lab Biodiversidad & Funcionamiento Ecosistem, Av Reina Mercedes 10, E-41012 Seville, Spain.; Delgado-Baquerizo, M (corresponding author), Univ Pablo de Olavide, Unidad Asociada CSIC UPO BioFun, Seville 41013, Spain.
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