Cited by 70Soil Carbon and Nitrogen DynamicsBioenergy crop production and managementSoil erosion and sediment transport

Carbon sequestration under Miscanthus : a study of 13 C distribution in soil aggregates

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DONDINI, MARTA, VAN GROENIGEN, KEES‐JAN, DEL GALDO, ILARIA, JONES, MICHAEL B.·2009·GCB Bioenergy

Abstract

The growing of bioenergy crops has been widely suggested as a key strategy in mitigating anthropogenic CO 2 emissions. However, the full mitigation potential of these crops cannot be assessed without taking into account their effect on soil carbon (C) dynamics. Therefore, we analyzed the C dynamics through four soil depths under a 14‐year‐old Miscanthus plantation, established on former arable land. An adjacent arable field was used as a reference site. Combining soil organic matter (SOM) fractionation with 13 C natural abundance analyses, we were able to trace the fate of Miscanthus ‐derived C in various physically protected soil fractions. Integrated through the whole soil profile, the total amount of soil organic carbon (SOC) was higher under Miscanthus than under arable crop, this difference was largely due to the input of new C. The C stock of the macroaggregates (M) under Miscanthus was significantly higher than those in the arable land. Additionally, the C content of the micro‐within macroaggregates (mM) were higher in the Miscanthus soil as compared with the arable soil. Analysis of the intramicroaggregates particulate organic matter (POM) suggested that the increase C storage in mM under Miscanthus was caused by a decrease in disturbance of M. Thus, the difference in C content between the two land use systems is largely caused by soil C storage in physically protected SOM fractions. We conclude that when Miscanthus is planted on former arable land, the resulting increase in soil C storage contributes considerably to its CO 2 mitigation potential.

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Crossref · 10.1111/j.1757-1707.2009.01025.x

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  • Little information was available on parameters affecting soil organic carbon accumulation in slowly decomposable or recalcitrant forms.

    “Although some papers recorded specific fractions of SOC [11, 45, 46], little information was available on parameters affecting SOC accumulation in slowly decomposable or ‘recalcitrant’ forms [25, 35, 47].”
  • Data for carbon inputs from belowground biomass are difficult to interpret, especially for roots, because they are based on many single observations rather than time series.

    “Data for C inputs from BGB are difficult to interpret, especially for roots because they are based on many single observations [45, 61, 62, 64, 80] rather than time series [26, 32, 81–83].”
  • 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].”
  • 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].”
  • For belowground biomass, inputs from herbaceous crop roots and rhizomes needed to be separated, which was not always done.

    “For the BGB, inputs from HCG roots and rhizomes needed to be separated, which was not always done [45, 57, 86, 106].”

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  1. S O I L C A R B O N S E Q U E S T R A T I O N U N D E R M I S C A N T H U S 329 r 2009 Blackwell Publishing Ltd, GCB Bioenergy, 1, 321-330 17571707, 2009, 5, Downloaded from https://onlinelibrary.wiley.com/doi/10.1111/j.1757-1707.2009.01025.x by Readcube (Labtiva Inc.), Wiley Online Library on [12/07/2023]. See the Terms and Conditions (https://onlinelibrary.wiley.com/terms-and-conditions) on Wiley Online Library for rules of use; OA articles are governed by the applicable Creative Commons License · DOI

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Authors
DONDINI, M., VAN GROENIGEN, K., DEL GALDO, I., & JONES, M. B.
Affiliations
Trinity College Dublin (IE)
Corresponding author
DONDINI, MARTA
Venue
GCB Bioenergy
Publisher
Wiley
Published
2009-10
Volume
1
Issue
5
Pages
321-330
ISSN
  • 1757-1693 (ISSN-L)
  • 1757-1707
OpenAlex
W1920732500
Cited by
70
References
39
Citations by year
2025: 5 · 2024: 5 · 2023: 4 · 2021: 1 · 2020: 3 · 2019: 2 · 2018: 4 · 2017: 5 · 2016: 4 · 2015: 6 · 2014: 11 · 2013: 9 · 2012: 5
FWCI
6.14
Type
journal article
Language
en
Open access
Locations
GCB Bioenergy (publishedVersion)
Funders
Teagasc
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, soil organic carbon, carbon sequestration, energy crops, soil aggregates, macroaggregates, microaggregates, particulate organic matter, soil organic matter fractions, 13C natural abundance, land use change, arable land, carbon storage, CO2 emission reduction

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