Response of CO2, N2O, and CH4 fluxes to contour tillage, diversion terrace, grassed waterway, and tile drainage implementation
In this study we evaluated CO2, N2O, and CH4 fluxes in two integrated best management practices (BMPIs) comprised of the following individual practices: diversion terraces (DT), grassed waterways (GW), and contour tillage (CT) [i.e., DTGW]; and DT, GW, CT, and tile drainage (TD) [i.e., DTGW+TD], rel...
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Frontiers Media S.A.
2025-04-01
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| Series: | Frontiers in Soil Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fsoil.2025.1453324/full |
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| author | Bryan A. Driscoll Maja Krzic Maja Krzic Louis-Pierre Comeau Bianca N. I. Eskelson Sheng Li |
| author_facet | Bryan A. Driscoll Maja Krzic Maja Krzic Louis-Pierre Comeau Bianca N. I. Eskelson Sheng Li |
| author_sort | Bryan A. Driscoll |
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| description | In this study we evaluated CO2, N2O, and CH4 fluxes in two integrated best management practices (BMPIs) comprised of the following individual practices: diversion terraces (DT), grassed waterways (GW), and contour tillage (CT) [i.e., DTGW]; and DT, GW, CT, and tile drainage (TD) [i.e., DTGW+TD], relative to CT that served as a control. It was anticipated that due to its effects on soil water redistribution and soil temperature, diversion terraces and grassed waterways would influence the pattern of greenhouse gas (GHG) emission. This is the first study in the world linking such erosion control structures with subsurface drainage. Cumulative CO2 emissions were greatest in DTGW in both 2020 and 2021. In 2019, DTGW+TD N2O emissions were significantly lower than CT and DTGW. N2O emissions were highest in DTGW in 2020 and 2021, though not statistically significant. There were no significant differences in CH4 in any year. Soil in all BMPIs acted as a weak CH4 sink during the study period. This study demonstrated that the addition of TD to DT and GW significantly reduced the loss of stored carbon (as CO2) relative to undrained DT and GW, while also not emitting significantly more carbon than CT, in the initial years after implementation. Results were similar with respect to the loss of nitrogen, as N2O, where undrained DT and GW generally emitted more N2O in the first years after implementation. |
| format | Article |
| id | doaj-art-e7d7db448fa747af8a81391c4280af1b |
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| issn | 2673-8619 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Soil Science |
| spelling | doaj-art-e7d7db448fa747af8a81391c4280af1b2025-08-20T02:09:24ZengFrontiers Media S.A.Frontiers in Soil Science2673-86192025-04-01510.3389/fsoil.2025.14533241453324Response of CO2, N2O, and CH4 fluxes to contour tillage, diversion terrace, grassed waterway, and tile drainage implementationBryan A. Driscoll0Maja Krzic1Maja Krzic2Louis-Pierre Comeau3Bianca N. I. Eskelson4Sheng Li5Faculty of Land and Food Systems, University of British Columbia, Vancouver, BC, CanadaFaculty of Land and Food Systems, University of British Columbia, Vancouver, BC, CanadaFaculty of Forestry, University of British Columbia, Vancouver, BC, CanadaFredericton Research and Development Centre, Agriculture and Agri-Food Canada, Fredericton, NB, CanadaFaculty of Forestry, University of British Columbia, Vancouver, BC, CanadaFredericton Research and Development Centre, Agriculture and Agri-Food Canada, Fredericton, NB, CanadaIn this study we evaluated CO2, N2O, and CH4 fluxes in two integrated best management practices (BMPIs) comprised of the following individual practices: diversion terraces (DT), grassed waterways (GW), and contour tillage (CT) [i.e., DTGW]; and DT, GW, CT, and tile drainage (TD) [i.e., DTGW+TD], relative to CT that served as a control. It was anticipated that due to its effects on soil water redistribution and soil temperature, diversion terraces and grassed waterways would influence the pattern of greenhouse gas (GHG) emission. This is the first study in the world linking such erosion control structures with subsurface drainage. Cumulative CO2 emissions were greatest in DTGW in both 2020 and 2021. In 2019, DTGW+TD N2O emissions were significantly lower than CT and DTGW. N2O emissions were highest in DTGW in 2020 and 2021, though not statistically significant. There were no significant differences in CH4 in any year. Soil in all BMPIs acted as a weak CH4 sink during the study period. This study demonstrated that the addition of TD to DT and GW significantly reduced the loss of stored carbon (as CO2) relative to undrained DT and GW, while also not emitting significantly more carbon than CT, in the initial years after implementation. Results were similar with respect to the loss of nitrogen, as N2O, where undrained DT and GW generally emitted more N2O in the first years after implementation.https://www.frontiersin.org/articles/10.3389/fsoil.2025.1453324/fullpotato productionbeneficial management practicesgreenhouse gasAtlantic Canadasoil carbonsoil health |
| spellingShingle | Bryan A. Driscoll Maja Krzic Maja Krzic Louis-Pierre Comeau Bianca N. I. Eskelson Sheng Li Response of CO2, N2O, and CH4 fluxes to contour tillage, diversion terrace, grassed waterway, and tile drainage implementation Frontiers in Soil Science potato production beneficial management practices greenhouse gas Atlantic Canada soil carbon soil health |
| title | Response of CO2, N2O, and CH4 fluxes to contour tillage, diversion terrace, grassed waterway, and tile drainage implementation |
| title_full | Response of CO2, N2O, and CH4 fluxes to contour tillage, diversion terrace, grassed waterway, and tile drainage implementation |
| title_fullStr | Response of CO2, N2O, and CH4 fluxes to contour tillage, diversion terrace, grassed waterway, and tile drainage implementation |
| title_full_unstemmed | Response of CO2, N2O, and CH4 fluxes to contour tillage, diversion terrace, grassed waterway, and tile drainage implementation |
| title_short | Response of CO2, N2O, and CH4 fluxes to contour tillage, diversion terrace, grassed waterway, and tile drainage implementation |
| title_sort | response of co2 n2o and ch4 fluxes to contour tillage diversion terrace grassed waterway and tile drainage implementation |
| topic | potato production beneficial management practices greenhouse gas Atlantic Canada soil carbon soil health |
| url | https://www.frontiersin.org/articles/10.3389/fsoil.2025.1453324/full |
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