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Assessing The Relationship Between Soil Carbon Fractions in 34 Swedish farms
Halmstad University.
2024 (English)Independent thesis Advanced level (degree of Master (One Year)), 15 credits / 22,5 HE creditsStudent thesis
Abstract [en]

 Understanding soil carbon dynamics is crucial for sustainable agriculture and effective climate change mitigation. Soil organic matter (SOM) and soil organic carbon (SOC) play pivotal roles in soil health and carbon sequestration. Together with analysis of permanganate oxidizable carbon, (POXC), we can start to interpret and understand soil health status and carbon dynamics. This study investigates the relationship between SOM, SOC, and POXC in 34 Swedish farms practicing carbon farming. Results reveal significant variability in SOC/SOM ratios, challenging the conventional fixed ratio of 58%. Farms with livestock have higher SOM and SOC levels, due to implementation of regenerative practices that improve the microbial community such as ley cultivation and use of organic manure instead of synthetic. The POXC analysis, which resulted in a negative correlation with SOC when presented in percent and positive when presented in mg/kg, shows that POXC results should be presented in mg/kg instead of percent, though interpretation complexities remain. Recommendations include revising SOC/SOM ratio standards, adopting ley cultivation in non-livestock farms, and presenting POXC in mg/kg for accurate assessment. This study is a snap shot of the current status of the carbon dynamics at the farms. Longer time series is needed to evaluate the effects of different management practices on soil carbon sequestration.

Place, publisher, year, edition, pages
2024. , p. 17
Keywords [en]
Soil carbon, carbon farming, regenerative agriculture, agroecology, soil health
National Category
Agricultural Science
Identifiers
URN: urn:nbn:se:hh:diva-54646OAI: oai:DiVA.org:hh-54646DiVA, id: diva2:1900370
External cooperation
Svensk Kolinlagring AB
Educational program
Master's Programme in Applied Environmental Science
Presentation
2024-05-23, 14:58 (English)
Supervisors
Examiners
Available from: 2025-01-27 Created: 2024-09-23 Last updated: 2025-10-01Bibliographically approved

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Citation style
  • apa
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  • de-DE
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  • nn-NB
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Output format
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  • asciidoc
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