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  • García-Palacios, PabloRey Juan Carlos University,Universidad Rey Juan Carlos, Móstoles, Spain (author)

Crop traits drive soil carbon sequestration under organic farming

  • Article/chapterEnglish2018

Publisher, publication year, extent ...

  • 2018-02-15
  • Chichester :Wiley,2018

Numbers

  • LIBRIS-ID:oai:lup.lub.lu.se:3875065d-1b0c-4ec5-99ce-98047493f1fe
  • https://lup.lub.lu.se/record/3875065d-1b0c-4ec5-99ce-98047493f1feURI
  • https://doi.org/10.1111/1365-2664.13113DOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-51789URI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • Organic farming (OF) enhances top soil organic carbon (SOC) stocks in croplands compared with conventional farming (CF), which can contribute to sequester C. As farming system differences in the amount of C inputs to soil (e.g. fertilization and crop residues) are not enough to explain such increase, shifts in crop residue traits important for soil C losses such as litter decomposition may also play a role. To assess whether crop residue (leaf and root) traits determined SOC sequestration responses to OF, we coupled a global meta-analysis with field measurements across a European-wide network of sites. In the meta-analysis, we related crop species averages of leaf N, leaf-dry matter content, fine-root C and N, with SOC stocks and sequestration responses in OF vs. CF. Across six European sites, we measured the management-induced changes in SOC stocks and leaf litter traits after long-term ecological intensive (e.g. OF) vs. CF comparisons. Our global meta-analysis showed that the positive OF-effects on soil respiration, SOC stocks, and SOC sequestration rates were significant even in organic farms with low manure application rates. Although fertilization intensity was the main driver of OF-effects on SOC, leaf and root N concentrations also played a significant role. Across the six European sites, changes towards higher leaf litter N in CF also promoted lower SOC stocks. Our results highlight that crop species displaying traits indicative of resource-acquisitive strategies (e.g. high leaf and root N) increase the difference in SOC between OF and CF. Indeed, changes towards higher crop residue decomposability was related with decreased SOC stocks under CF across European sites. Synthesis and applications. Our study emphasizes that, with management, changes in crop residue traits contribute to the positive effects of organic farming (OF) on soil carbon sequestration. These results provide a clear message to land managers: the choice of crop species, and more importantly their functional traits (e.g. leave and root nitrogen), should be considered in addition to management practices and climate, when evaluating the potential of OF for climate change mitigation.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Gattinger, AndreasResearch Institute of Organic Agriculture (FiBL Switzerland) (author)
  • Bracht-Jørgensen, HeleneLund University,Lunds universitet,Biodiversitet,Biologiska institutionen,Naturvetenskapliga fakulteten,Molekylär ekologi och evolution,Forskargrupper vid Lunds universitet,Biodiversity,Department of Biology,Faculty of Science,Molecular Ecology and Evolution Lab,Lund University Research Groups(Swepub:lu)zooe-hj0 (author)
  • Brussaard, LijbertWageningen University (author)
  • Carvalho, FilipeUniversity of Coimbra (author)
  • Castro, HelenaUniversity of Coimbra (author)
  • Clément, Jean ChristopheUniversity Grenoble Alpes,University of Savoy Mont Blanc (author)
  • De Deyn, GerlindeWageningen University (author)
  • D'Hertefeldt, TinaLund University,Lunds universitet,Biodiversitet,Biologiska institutionen,Naturvetenskapliga fakulteten,Molekylär ekologi och evolution,Forskargrupper vid Lunds universitet,Biodiversity,Department of Biology,Faculty of Science,Molecular Ecology and Evolution Lab,Lund University Research Groups,Lund University, Lund, Sweden(Swepub:hh)tindhe (author)
  • Foulquier, ArnaudUniversity Grenoble Alpes (author)
  • Hedlund, KatarinaLund University,Lunds universitet,Biodiversitet,Biologiska institutionen,Naturvetenskapliga fakulteten,Markgruppen,Forskargrupper vid Lunds universitet,Biodiversity,Department of Biology,Faculty of Science,Soil Ecology,Lund University Research Groups(Swepub:lu)ekol-khe (author)
  • Lavorel, SandraUniversity Grenoble Alpes (author)
  • Legay, NicolasCentre d'Ecologie Fonctionnelle et Evolutive (CEFE),University Grenoble Alpes,L’école nationale supérieure de la nature et du paysage (ENSNP) (author)
  • Lori, MartinaResearch Institute of Organic Agriculture (FiBL Switzerland) (author)
  • Mäder, PaulResearch Institute of Organic Agriculture (FiBL Switzerland) (author)
  • Martínez-García, Laura B.Wageningen University (author)
  • Martins da Silva, PedroUniversity of Coimbra (author)
  • Muller, AdrianResearch Institute of Organic Agriculture (FiBL Switzerland),ETH Zürich (author)
  • Nascimento, EduardoUniversity of Coimbra (author)
  • Reis, FilipaUniversity of Coimbra (author)
  • Symanczik, SarahResearch Institute of Organic Agriculture (FiBL Switzerland) (author)
  • Paulo Sousa, JoséUniversity of Coimbra (author)
  • Milla, RubénRey Juan Carlos University (author)
  • Rey Juan Carlos UniversityUniversidad Rey Juan Carlos, Móstoles, Spain (creator_code:org_t)

Related titles

  • In:Journal of Applied EcologyChichester : Wiley55:5, s. 2496-25050021-89011365-2664

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