Soil carbon dioxide (CO2) fluxes in permanent upslope pasture and downslope riparian buffers with varying vegetation

dc.contributor.authorDlamini, Jerry Celumusa
dc.contributor.authorTesfamariam, Eyob Habte
dc.contributor.authorDunn, R.
dc.contributor.authorEvans, J.
dc.contributor.authorHawkins, Jane
dc.contributor.authorBlackwell, Martin
dc.contributor.authorCollins, Adrian
dc.contributor.authorCardenas, Laura
dc.date.accessioned2024-03-27T10:41:19Z
dc.date.available2024-03-27T10:41:19Z
dc.date.issued2023-08
dc.descriptionDATA AVAILABILITY STATEMENT : The data that support the findings of this study are available from the corresponding author upon reasonable request.en_US
dc.description.abstractBACKGROUND : Riparian buffers are primarily implemented for their water quality functions in agroecosystems. Their location in the agricultural landscape allows them to intercept and process pollutants from immediately adjacent agricultural land. Vegetated riparian buffers recycle soil organic matter, which elevates soil carbon (C), which upon processing, processes and releases carbon dioxide (CO2). The elevated soil C and seasonally anoxic environments associated with riparian buffers promote denitrification and fermentation, further increasing soil CO2 production. AIM : Against this context, a replicated plot-scale experiment was established at North Wyke, UK, to measure the extent of soil CO2 emissions in permanent pasture served by grass, willow, and woodland riparian buffers, as well as a no-buffer control. METHODS : Soil CO2 was measured using the static chamber technique in conjunction with soil and environmental variables between June 2018 and February 2019. RESULTS : Cumulative soil CO2 fluxes were in the descending order: woodland riparian buffer; 11,927.8 ± 1987.9 kg CO2 ha–1 > no-buffer control; 11,101.3 ± 3700.4 kg CO2 ha–1 >grass riparian buffer; 10,826.4±2551.8 kgCO2 ha–1 >upslope pasture; 10,554.6± 879.5 kg CO2 ha–1 > willow riparian buffer; 9294.9 ± 1549.2 5 kg CO2 ha–1. There was, however, no evidence of significant differences among all treatments of the current study. CONCLUSIONS : Despite the lack of significant differences, the results from our short-term study show that the woodland riparian buffer had relatively larger soil CO2 emissions than the remainder of the other riparian buffers and the upslope pasture it serves. Our short-term findings may be useful in developing soil CO2 mitigation strategies through careful selection of riparian buffer vegetation andmay be useful in calibrating mechanistic models for simulating such emissions from similar agro systems.en_US
dc.description.departmentPlant Production and Soil Scienceen_US
dc.description.librarianay2024en_US
dc.description.sdgSDG-15:Life on landen_US
dc.description.sponsorshipThe Department of Higher Education and Training (New Generation Gap of Academics Program) and National Research Foundation-Thuthuka.en_US
dc.description.urihttps://wileyonlinelibrary.com/journal/jplnen_US
dc.identifier.citationDlamini, J. C., Tesfamariam, E. H.,Dunn, R., Evans, J., Hawkins, J., Blackwell, M., Collins, A., & Cardenas, L. (2023). Soil carbon dioxide (CO2) fluxes in permanent upslope pasture and downslope riparian buffers with varying vegetation. Journal of Plant Nutrition and Soil Science, 186, 406–416. https://DOI.org/10.1002/jpln.202100292.en_US
dc.identifier.issn1436-8730 (print)
dc.identifier.issn1522-2624 (online)
dc.identifier.other10.1002/jpln.202100292
dc.identifier.urihttp://hdl.handle.net/2263/95380
dc.language.isoenen_US
dc.publisherWileyen_US
dc.rights© 2023 Wiley-VCH GmbH.en_US
dc.subjectNovel grassen_US
dc.subjectPermanent pastureen_US
dc.subjectRiparian buffersen_US
dc.subjectWillowen_US
dc.subjectWoodlanden_US
dc.subjectSDG-15: Life on landen_US
dc.titleSoil carbon dioxide (CO2) fluxes in permanent upslope pasture and downslope riparian buffers with varying vegetationen_US
dc.typeArticleen_US

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