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Coastal reservoirs as a source of nitrous oxide: Spatio-temporal patterns and assessment strategy

Ping Yang, Miaohui Lu, Kam Tang Orcid Logo, Hong Yang, Derrick Y.F. Lai, Chuan Tong, Kwok Pan Chun, Linhai Zhang, Chen Tang

Science of The Total Environment, Volume: 790, Start page: 147878

Swansea University Author: Kam Tang Orcid Logo

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DOI (Published version): 10.1016/j.scitotenv.2021.147878

Abstract

Coastal reservoirs are widely used to solve the water scarcity problem in coastal cities. Because of anthropogenic wastes and alteration of hydroecological processes, these reservoirs may become hotspots for nitrous oxide (N2O) emissions. We measured the dissolved N2O concentrations and emissions at...

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Published in: Science of The Total Environment
ISSN: 0048-9697
Published: Elsevier BV 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa56942
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spelling 2021-06-18T15:51:22.9721272 v2 56942 2021-05-24 Coastal reservoirs as a source of nitrous oxide: Spatio-temporal patterns and assessment strategy 69af43a3b9da24aef65c5d3a44956fe3 0000-0001-9427-9564 Kam Tang Kam Tang true false 2021-05-24 SBI Coastal reservoirs are widely used to solve the water scarcity problem in coastal cities. Because of anthropogenic wastes and alteration of hydroecological processes, these reservoirs may become hotspots for nitrous oxide (N2O) emissions. We measured the dissolved N2O concentrations and emissions at a high spatial resolution in a subtropical coastal reservoir in southeastern China, which was influenced by river runoff, aquacultural discharge, industrial discharge and municipal sewage. Both N2O concentration and emission showed large spatio-temporal variations correlated with nitrogen loading from the river and wastewater discharge. The mean N2O concentration and mission were significantly higher in the summer than in spring and autumn. Redundancy analysis showed that NH4-N explained the greatest variance in N2O emission, implying that nitrification was the main microbial pathway for N2O production. The mean N2O emission across the whole reservoir was 107 µg/m/h , which was more than an order of magnitude higher than that from global lakes and reservoirs. Based on Monte Carlo simulations, a minimum of 15 sampling points per km2 would be needed to produce representative and reliable N2O estimates in such a spatially heterogeneousaquatic system. Journal Article Science of The Total Environment 790 147878 Elsevier BV 0048-9697 Greenhouse gases; Water management; Nitrous oxide; Spatial heterogeneity; Wastewater discharge; Coastal reservoir 10 10 2021 2021-10-10 10.1016/j.scitotenv.2021.147878 COLLEGE NANME Biosciences COLLEGE CODE SBI Swansea University Not Required 2021-06-18T15:51:22.9721272 2021-05-24T08:39:16.3422370 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Ping Yang 1 Miaohui Lu 2 Kam Tang 0000-0001-9427-9564 3 Hong Yang 4 Derrick Y.F. Lai 5 Chuan Tong 6 Kwok Pan Chun 7 Linhai Zhang 8 Chen Tang 9 56942__19968__889af5559a7245458f8b619de45f76fa.pdf STOTEN_accepted.pdf 2021-05-24T08:49:21.0373077 Output 6780457 application/pdf Accepted Manuscript true 2022-05-21T00:00:00.0000000 ©2021 All rights reserved. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND) true eng https://creativecommons.org/licenses/by-nc-nd/4.0/
title Coastal reservoirs as a source of nitrous oxide: Spatio-temporal patterns and assessment strategy
spellingShingle Coastal reservoirs as a source of nitrous oxide: Spatio-temporal patterns and assessment strategy
Kam Tang
title_short Coastal reservoirs as a source of nitrous oxide: Spatio-temporal patterns and assessment strategy
title_full Coastal reservoirs as a source of nitrous oxide: Spatio-temporal patterns and assessment strategy
title_fullStr Coastal reservoirs as a source of nitrous oxide: Spatio-temporal patterns and assessment strategy
title_full_unstemmed Coastal reservoirs as a source of nitrous oxide: Spatio-temporal patterns and assessment strategy
title_sort Coastal reservoirs as a source of nitrous oxide: Spatio-temporal patterns and assessment strategy
author_id_str_mv 69af43a3b9da24aef65c5d3a44956fe3
author_id_fullname_str_mv 69af43a3b9da24aef65c5d3a44956fe3_***_Kam Tang
author Kam Tang
author2 Ping Yang
Miaohui Lu
Kam Tang
Hong Yang
Derrick Y.F. Lai
Chuan Tong
Kwok Pan Chun
Linhai Zhang
Chen Tang
format Journal article
container_title Science of The Total Environment
container_volume 790
container_start_page 147878
publishDate 2021
institution Swansea University
issn 0048-9697
doi_str_mv 10.1016/j.scitotenv.2021.147878
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
document_store_str 1
active_str 0
description Coastal reservoirs are widely used to solve the water scarcity problem in coastal cities. Because of anthropogenic wastes and alteration of hydroecological processes, these reservoirs may become hotspots for nitrous oxide (N2O) emissions. We measured the dissolved N2O concentrations and emissions at a high spatial resolution in a subtropical coastal reservoir in southeastern China, which was influenced by river runoff, aquacultural discharge, industrial discharge and municipal sewage. Both N2O concentration and emission showed large spatio-temporal variations correlated with nitrogen loading from the river and wastewater discharge. The mean N2O concentration and mission were significantly higher in the summer than in spring and autumn. Redundancy analysis showed that NH4-N explained the greatest variance in N2O emission, implying that nitrification was the main microbial pathway for N2O production. The mean N2O emission across the whole reservoir was 107 µg/m/h , which was more than an order of magnitude higher than that from global lakes and reservoirs. Based on Monte Carlo simulations, a minimum of 15 sampling points per km2 would be needed to produce representative and reliable N2O estimates in such a spatially heterogeneousaquatic system.
published_date 2021-10-10T04:12:17Z
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score 11.012924

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