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Soil N(2)O and CH(4) emissions from fodder maize production with and without riparian buffer strips of differing vegetation

PURPOSE: Nitrous oxide (N(2)O) and methane (CH(4)) are some of the most important greenhouse gases in the atmosphere of the 21st century. Vegetated riparian buffers are primarily implemented for their water quality functions in agroecosystems. Their location in agricultural landscapes allows them to...

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Autores principales: Dlamini, Jerry C., Cardenas, L. M., Tesfamariam, E. H., Dunn, R. M., Evans, J., Hawkins, J. M. B., Blackwell, M. S. A., Collins, A. L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer International Publishing 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9474383/
https://www.ncbi.nlm.nih.gov/pubmed/36120385
http://dx.doi.org/10.1007/s11104-022-05426-0
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author Dlamini, Jerry C.
Cardenas, L. M.
Tesfamariam, E. H.
Dunn, R. M.
Evans, J.
Hawkins, J. M. B.
Blackwell, M. S. A.
Collins, A. L.
author_facet Dlamini, Jerry C.
Cardenas, L. M.
Tesfamariam, E. H.
Dunn, R. M.
Evans, J.
Hawkins, J. M. B.
Blackwell, M. S. A.
Collins, A. L.
author_sort Dlamini, Jerry C.
collection PubMed
description PURPOSE: Nitrous oxide (N(2)O) and methane (CH(4)) are some of the most important greenhouse gases in the atmosphere of the 21st century. Vegetated riparian buffers are primarily implemented for their water quality functions in agroecosystems. Their location in agricultural landscapes allows them to intercept and process pollutants from adjacent agricultural land. They recycle organic matter, which increases soil carbon (C), intercept nitrogen (N)-rich runoff from adjacent croplands, and are seasonally anoxic. Thus processes producing environmentally harmful gases including N(2)O and CH(4) are promoted. Against this context, the study quantified atmospheric losses between a cropland and vegetated riparian buffers that serve it. METHODS: Environmental variables and simultaneous N(2)O and CH(4) emissions were measured for a 6-month period in a replicated plot-scale facility comprising maize (Zea mays L.). A static chamber was used to measure gas emissions. The cropping was served by three vegetated riparian buffers, namely: (i) grass riparian buffer; (ii) willow riparian buffer and; (iii) woodland riparian buffer, which were compared with a no-buffer control. RESULTS: The no-buffer control generated the largest cumulative N(2)O emissions of 18.9 kg ha(− 1) (95% confidence interval: 0.5–63.6) whilst the maize crop upslope generated the largest cumulative CH(4) emissions (5.1 ± 0.88 kg ha(− 1)). Soil N(2)O and CH(4)-based global warming potential (GWP) were lower in the willow (1223.5 ± 362.0 and 134.7 ± 74.0 kg CO(2)-eq. ha(− 1) year(− 1), respectively) and woodland (1771.3 ± 800.5 and 3.4 ± 35.9 kg CO(2)-eq. ha(− 1) year(− 1), respectively) riparian buffers. CONCLUSIONS: Our results suggest that in maize production and where no riparian buffer vegetation is introduced for water quality purposes (no buffer control), atmospheric CH(4) and N(2)O concerns may result.
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spelling pubmed-94743832022-09-16 Soil N(2)O and CH(4) emissions from fodder maize production with and without riparian buffer strips of differing vegetation Dlamini, Jerry C. Cardenas, L. M. Tesfamariam, E. H. Dunn, R. M. Evans, J. Hawkins, J. M. B. Blackwell, M. S. A. Collins, A. L. Plant Soil Research Article PURPOSE: Nitrous oxide (N(2)O) and methane (CH(4)) are some of the most important greenhouse gases in the atmosphere of the 21st century. Vegetated riparian buffers are primarily implemented for their water quality functions in agroecosystems. Their location in agricultural landscapes allows them to intercept and process pollutants from adjacent agricultural land. They recycle organic matter, which increases soil carbon (C), intercept nitrogen (N)-rich runoff from adjacent croplands, and are seasonally anoxic. Thus processes producing environmentally harmful gases including N(2)O and CH(4) are promoted. Against this context, the study quantified atmospheric losses between a cropland and vegetated riparian buffers that serve it. METHODS: Environmental variables and simultaneous N(2)O and CH(4) emissions were measured for a 6-month period in a replicated plot-scale facility comprising maize (Zea mays L.). A static chamber was used to measure gas emissions. The cropping was served by three vegetated riparian buffers, namely: (i) grass riparian buffer; (ii) willow riparian buffer and; (iii) woodland riparian buffer, which were compared with a no-buffer control. RESULTS: The no-buffer control generated the largest cumulative N(2)O emissions of 18.9 kg ha(− 1) (95% confidence interval: 0.5–63.6) whilst the maize crop upslope generated the largest cumulative CH(4) emissions (5.1 ± 0.88 kg ha(− 1)). Soil N(2)O and CH(4)-based global warming potential (GWP) were lower in the willow (1223.5 ± 362.0 and 134.7 ± 74.0 kg CO(2)-eq. ha(− 1) year(− 1), respectively) and woodland (1771.3 ± 800.5 and 3.4 ± 35.9 kg CO(2)-eq. ha(− 1) year(− 1), respectively) riparian buffers. CONCLUSIONS: Our results suggest that in maize production and where no riparian buffer vegetation is introduced for water quality purposes (no buffer control), atmospheric CH(4) and N(2)O concerns may result. Springer International Publishing 2022-04-11 2022 /pmc/articles/PMC9474383/ /pubmed/36120385 http://dx.doi.org/10.1007/s11104-022-05426-0 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Research Article
Dlamini, Jerry C.
Cardenas, L. M.
Tesfamariam, E. H.
Dunn, R. M.
Evans, J.
Hawkins, J. M. B.
Blackwell, M. S. A.
Collins, A. L.
Soil N(2)O and CH(4) emissions from fodder maize production with and without riparian buffer strips of differing vegetation
title Soil N(2)O and CH(4) emissions from fodder maize production with and without riparian buffer strips of differing vegetation
title_full Soil N(2)O and CH(4) emissions from fodder maize production with and without riparian buffer strips of differing vegetation
title_fullStr Soil N(2)O and CH(4) emissions from fodder maize production with and without riparian buffer strips of differing vegetation
title_full_unstemmed Soil N(2)O and CH(4) emissions from fodder maize production with and without riparian buffer strips of differing vegetation
title_short Soil N(2)O and CH(4) emissions from fodder maize production with and without riparian buffer strips of differing vegetation
title_sort soil n(2)o and ch(4) emissions from fodder maize production with and without riparian buffer strips of differing vegetation
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9474383/
https://www.ncbi.nlm.nih.gov/pubmed/36120385
http://dx.doi.org/10.1007/s11104-022-05426-0
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