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Soil organic carbon sequestration over 50 years in resampled afforestation chronosequences on former cropland.

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Title: Soil organic carbon sequestration over 50 years in resampled afforestation chronosequences on former cropland.
Authors: Yu, Ming1 (AUTHOR) ming@ign.ku.dk, Kepfer-Rojas, Sebastian1 (AUTHOR) skro@ign.ku.dk, Rosas, Yamina Micaela1 (AUTHOR) ymro@ign.ku.dk, Bárcena, Teresa G.2 (AUTHOR) teresa.barcena@nibio.no, Kappel Schmidt, Inger1 (AUTHOR) iks@ign.ku.dk, Gundersen, Per1 (AUTHOR) pgu@ign.ku.dk, D'Imperio, Ludovica1,3 (AUTHOR) luddi@dtu.dk, Mueller, Carsten W.4 (AUTHOR) cm@boku.tu-berlin.de, Vesterdal, Lars1 (AUTHOR) lv@ign.ku.dk
Source: Journal of Environmental Management. Apr2026, Vol. 405, pN.PAG-N.PAG. 1p.
Subjects: Carbon sequestration, Carbon in soils, Norway spruce, Biomass, Afforestation, Time series analysis
Abstract: Afforestation of agricultural land is widely promoted as a nature-based solution to enhance carbon (C) sequestration and mitigate atmospheric CO 2 levels. However, the temporal dynamics of soil organic carbon (SOC) after afforestation, particularly in mineral soils, remain uncertain due to the complex interaction of biogeochemical processes and their spatial variability. We investigated changes in SOC sequestration over five decades of afforestation on former cropland by extending the chronosequence approach with three repeated soil inventories in oak (Quercus robur L.) and Norway spruce (Picea abies (L.) Karst.) stands. Aboveground biomass C stocks were also quantified to evaluate the contribution of SOC to post-agricultural ecosystem C stocks. Forest floor C stocks increased rapidly in the early years and stabilized after approximately three decades, with consistently higher accumulation under Norway spruce than oak. In contrast, mineral SOC stocks in 0-25 cm depth increased with forest age by 0.18 ± 0.06 Mg ha−1 yr−1 under oak and 0.44 ± 0.07 Mg ha−1 yr−1 under Norway spruce. These contrasting trends in forest floor and mineral soil indicated a shift in C source-sink strength over time and between species. After 50 years of afforestation, total ecosystem C stocks in afforested stands reached up to 75% of those in a 200-year-old forest, with most new C stored in biomass (84-86%), followed by mineral soil (10-11%) and forest floor (4-5%). Despite higher sequestration of new C in Norway spruce stands, the relative distribution across ecosystem compartments was similar between tree species. • Combined chronosequence and resampling captured 50 years of SOC change after afforestation. • C sink strength shifted from forest floors to mineral soil after three decades. • Afforestation-derived C accumulated mainly in biomass, then mineral soil and forest floor. • Norway spruce stored more carbon overall but allocation matched patterns in oak. • Ecosystem C in stands after 50 years reaching up to 75% of those in an old forest. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Environmental Management is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Soil organic carbon sequestration over 50 years in resampled afforestation chronosequences on former cropland.
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  Data: <searchLink fieldCode="AR" term="%22Yu%2C+Ming%22">Yu, Ming</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ming@ign.ku.dk</i><br /><searchLink fieldCode="AR" term="%22Kepfer-Rojas%2C+Sebastian%22">Kepfer-Rojas, Sebastian</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> skro@ign.ku.dk</i><br /><searchLink fieldCode="AR" term="%22Rosas%2C+Yamina+Micaela%22">Rosas, Yamina Micaela</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ymro@ign.ku.dk</i><br /><searchLink fieldCode="AR" term="%22Bárcena%2C+Teresa+G%2E%22">Bárcena, Teresa G.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> teresa.barcena@nibio.no</i><br /><searchLink fieldCode="AR" term="%22Kappel+Schmidt%2C+Inger%22">Kappel Schmidt, Inger</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> iks@ign.ku.dk</i><br /><searchLink fieldCode="AR" term="%22Gundersen%2C+Per%22">Gundersen, Per</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> pgu@ign.ku.dk</i><br /><searchLink fieldCode="AR" term="%22D'Imperio%2C+Ludovica%22">D'Imperio, Ludovica</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> luddi@dtu.dk</i><br /><searchLink fieldCode="AR" term="%22Mueller%2C+Carsten+W%2E%22">Mueller, Carsten W.</searchLink><relatesTo>4</relatesTo> (AUTHOR)<i> cm@boku.tu-berlin.de</i><br /><searchLink fieldCode="AR" term="%22Vesterdal%2C+Lars%22">Vesterdal, Lars</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> lv@ign.ku.dk</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Environmental+Management%22">Journal of Environmental Management</searchLink>. Apr2026, Vol. 405, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Carbon+sequestration%22">Carbon sequestration</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+in+soils%22">Carbon in soils</searchLink><br /><searchLink fieldCode="DE" term="%22Norway+spruce%22">Norway spruce</searchLink><br /><searchLink fieldCode="DE" term="%22Biomass%22">Biomass</searchLink><br /><searchLink fieldCode="DE" term="%22Afforestation%22">Afforestation</searchLink><br /><searchLink fieldCode="DE" term="%22Time+series+analysis%22">Time series analysis</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Afforestation of agricultural land is widely promoted as a nature-based solution to enhance carbon (C) sequestration and mitigate atmospheric CO 2 levels. However, the temporal dynamics of soil organic carbon (SOC) after afforestation, particularly in mineral soils, remain uncertain due to the complex interaction of biogeochemical processes and their spatial variability. We investigated changes in SOC sequestration over five decades of afforestation on former cropland by extending the chronosequence approach with three repeated soil inventories in oak (Quercus robur L.) and Norway spruce (Picea abies (L.) Karst.) stands. Aboveground biomass C stocks were also quantified to evaluate the contribution of SOC to post-agricultural ecosystem C stocks. Forest floor C stocks increased rapidly in the early years and stabilized after approximately three decades, with consistently higher accumulation under Norway spruce than oak. In contrast, mineral SOC stocks in 0-25 cm depth increased with forest age by 0.18 ± 0.06 Mg ha−1 yr−1 under oak and 0.44 ± 0.07 Mg ha−1 yr−1 under Norway spruce. These contrasting trends in forest floor and mineral soil indicated a shift in C source-sink strength over time and between species. After 50 years of afforestation, total ecosystem C stocks in afforested stands reached up to 75% of those in a 200-year-old forest, with most new C stored in biomass (84-86%), followed by mineral soil (10-11%) and forest floor (4-5%). Despite higher sequestration of new C in Norway spruce stands, the relative distribution across ecosystem compartments was similar between tree species. • Combined chronosequence and resampling captured 50 years of SOC change after afforestation. • C sink strength shifted from forest floors to mineral soil after three decades. • Afforestation-derived C accumulated mainly in biomass, then mineral soil and forest floor. • Norway spruce stored more carbon overall but allocation matched patterns in oak. • Ecosystem C in stands after 50 years reaching up to 75% of those in an old forest. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Journal of Environmental Management is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.jenvman.2026.129715
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Carbon sequestration
        Type: general
      – SubjectFull: Carbon in soils
        Type: general
      – SubjectFull: Norway spruce
        Type: general
      – SubjectFull: Biomass
        Type: general
      – SubjectFull: Afforestation
        Type: general
      – SubjectFull: Time series analysis
        Type: general
    Titles:
      – TitleFull: Soil organic carbon sequestration over 50 years in resampled afforestation chronosequences on former cropland.
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              Text: Apr2026
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              Y: 2026
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