Cited by 23Soil Carbon and Nitrogen DynamicsBioenergy crop production and managementSoil erosion and sediment transport

Assessing the impacts of the establishment of Miscanthus on soil organic carbon on two contrasting land‐use types in Ireland

Zimmermann, J., Dondini, M., Jones, M. B.·2013·European Journal of Soil Science

Abstract

Summary: In recent years the use of biomass for energy production has become an increasingly important measure for mitigating global change. However, the scientific debate has been inconclusive with regard to the risks and benefits of bioenergy use. There is particular concern that land‐use change to bioenergy production can lead to increased CO 2 emissions. These emissions result from the loss of vegetation and the soil disturbance. The use of Miscanthus x giganteus as a bioenergy feedstock offers a possible solution, as it shows a large soil carbon (C) sequestration potential. The aim of the present study was to analyse the impacts of land‐use change to Miscanthus on soil fractions and associated soil organic carbon (SOC). Four young commercial Miscanthus sites, as well as adjacent sites representing the former land‐use, in SE Ireland were analysed for changes in SOC stocks and newly sequestered Miscanthus ‐derived C. The fraction with which the SOC is associated significantly influenced its decomposability and turnover time. Using the 13 C natural abundance method, we found that newly sequestered C was found mainly as particulate organic matter (79.7% of Miscanthus ‐derived C) and therefore in a labile state with short turnover times. No significant differences were found in the distribution of the different soil fractions and SOC between the Miscanthus and the control sites, and it was shown that the share of fractions on the bulk soil as well as the proportion of the SOC associated with these fractions in young Miscanthu s sites depends mainly on the previous land‐use.

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Crossref · 10.1111/ejss.12087

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37 of 37 references verified0 citation errors · 0 not checkable

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  • Carbon inputs originate from and feed into pools of different stability, and initially carbon is stored as particulate organic matter, which is a relatively slow soil organic carbon pool under switchgrass.

    “C inputs originate from and feed into pools of different stability [45, 141], and initially, C is stored as particulate organic matter (POM) [139], which is a relatively slow SOC pool under switchgrass [25, 47].”
  • Considering the enrichment in the labile fraction, it was suggested that at least 20 years was needed to evaluate the impact of Miscanthus in terms of sustainable soil organic carbon enrichment, which contradicted earlier estimates.

    “Considering the enrichment in the labile fraction [86, 135, 139], it was suggested that at least 20 years was needed to evaluate the impact of Miscanthus in terms of sustainable SOC enrichment, which contradicted earlier estimates [19, 45, 106, 135].”
  • Especially when planted into grassland soils, the initial residue input and turnover rates from perennial energy crops are too low to compensate for the loss.

    “Especially when planted into grassland soils [86, 139], the initial residue input and turnover rates from PEC are too low to compensate for the loss.”
  • The intra-aggregate fraction of particulate organic matter is small but could be a close approximation.

    “The intra-aggregate fraction of POM [45, 139] is small but could be a close approximation.”
  • So far, modelling SOC under biofuel crops has mainly relied on C inputs approximated from crop yields.

    “So far, modelling SOC under biofuel crops has mainly relied on C inputs approximated from crop yields [19, 45, 86, 139].”

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Authors
Zimmermann, J., Dondini, M., & Jones, M. B.
Affiliations
  • Trinity College Dublin (IE)
  • University of Aberdeen (GB)
Corresponding author
Zimmermann, J.
Venue
European Journal of Soil Science
Publisher
Wiley
Published
2013-10-08
Volume
64
Issue
6
Pages
747-756
ISSN
  • 1351-0754 (ISSN-L)
  • 1365-2389
OpenAlex
W1825017014
Cited by
23
References
37
Citations by year
2024: 2 · 2023: 2 · 2022: 2 · 2021: 1 · 2020: 4 · 2018: 6 · 2017: 1 · 2016: 2 · 2015: 2 · 2014: 1
FWCI
2.41
Type
journal article
Language
en
Open access
closed
Locations
European Journal of Soil Science (publishedVersion)
Funders
University of St Andrews
Topics
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Bioenergy crop production and management
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil erosion and sediment transport
Keywords
Miscanthus × giganteus, soil organic carbon, biomass feedstock, land use change, soil carbon sequestration, particulate organic matter, soil organic matter fractions, carbon turnover time, 13C natural abundance, biomass energy

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