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Assessing carbon greenhouse gas emissions from aquaculture in China based on aquaculture system types, species, environmental conditions and management practices

Yifei Zhang, Kam Tang Orcid Logo, Ping Yang, Hong Yang, Chuan Tong, Changchun Song, Lishan Tan, Guanghui Zhao, Xudong Zhou, Dongyao Sun

Agriculture, Ecosystems and Environment, Volume: 338, Start page: 108110

Swansea University Author: Kam Tang Orcid Logo

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DOI (Published version): 10.1016/j.agee.2022.108110

Abstract

Aquaculture is one of the fastest growing food production sectors in China, but many of the small-hold operations are poorly assessed for their climate impact. We analyzed the literature data on CO2 and CH4 fluxes from various aquaculture systems in China. The mean fluxes varied from -382.45 to 551....

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Published in: Agriculture, Ecosystems and Environment
ISSN: 0167-8809 0167-8809
Published: Elsevier BV 2022
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URI: https://cronfa.swan.ac.uk/Record/cronfa60559
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The mean fluxes varied from -382.45 to 551.88 g CO2-C m-2 yr-1 and -0.03 to 565.09 g CH4-C m-2 yr-1. Aquaculture system reclaimed from mudflat had the highest CH4 emission (54.92 ± 21.00 g C m-2 yr-1) but lowest CO2 emission. Shrimp aquaculture and semi-intensive farming tended to yield higher CH4 emission. Small and shallow systems had significantly higher CO2 and CH4 emissions, with chlorophyll a and dissolved oxygen concentrations among the main environmental drivers. Management practice such as drainage, exposure and desilting during the non-farming period significantly decreased CH4 emission. We estimated that aquaculture systems in China emitted 181.66 Tg CO2-eq yr-1, enough to offset ~7% of the national terrestrial carbon sink, with most of the emission concentrated in coastal provinces and along the major rivers in the southeastern quadrant. 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spelling v2 60559 2022-07-20 Assessing carbon greenhouse gas emissions from aquaculture in China based on aquaculture system types, species, environmental conditions and management practices 69af43a3b9da24aef65c5d3a44956fe3 0000-0001-9427-9564 Kam Tang Kam Tang true false 2022-07-20 BGPS Aquaculture is one of the fastest growing food production sectors in China, but many of the small-hold operations are poorly assessed for their climate impact. We analyzed the literature data on CO2 and CH4 fluxes from various aquaculture systems in China. The mean fluxes varied from -382.45 to 551.88 g CO2-C m-2 yr-1 and -0.03 to 565.09 g CH4-C m-2 yr-1. Aquaculture system reclaimed from mudflat had the highest CH4 emission (54.92 ± 21.00 g C m-2 yr-1) but lowest CO2 emission. Shrimp aquaculture and semi-intensive farming tended to yield higher CH4 emission. Small and shallow systems had significantly higher CO2 and CH4 emissions, with chlorophyll a and dissolved oxygen concentrations among the main environmental drivers. Management practice such as drainage, exposure and desilting during the non-farming period significantly decreased CH4 emission. We estimated that aquaculture systems in China emitted 181.66 Tg CO2-eq yr-1, enough to offset ~7% of the national terrestrial carbon sink, with most of the emission concentrated in coastal provinces and along the major rivers in the southeastern quadrant. This study highlights the need to account for carbon greenhouse gas emissions from aquaculture to improve the accuracy of the regional and national carbon budgets. Journal Article Agriculture, Ecosystems and Environment 338 108110 Elsevier BV 0167-8809 0167-8809 15 10 2022 2022-10-15 10.1016/j.agee.2022.108110 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University Not Required This research was financially supported by the National Natural Science Foundation of China (Grant No. 41801070, 41671088, and 41730643), the Natural Science Foundation of Fujian Province, China (Grant No. 2020J01136, and 2018J01737), and Minjiang Scholar Programme. 2024-07-12T16:12:06.5149624 2022-07-20T14:11:40.0748659 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Yifei Zhang 1 Kam Tang 0000-0001-9427-9564 2 Ping Yang 3 Hong Yang 4 Chuan Tong 5 Changchun Song 6 Lishan Tan 7 Guanghui Zhao 8 Xudong Zhou 9 Dongyao Sun 10 60559__24675__d1abd37cd926444c9d6e2fa7e0694eee.pdf AGEE_20July2022_authorsfinal.pdf 2022-07-20T14:14:39.1551177 Output 3181599 application/pdf Accepted Manuscript true 2023-07-25T00:00:00.0000000 ©2022 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 Assessing carbon greenhouse gas emissions from aquaculture in China based on aquaculture system types, species, environmental conditions and management practices
spellingShingle Assessing carbon greenhouse gas emissions from aquaculture in China based on aquaculture system types, species, environmental conditions and management practices
Kam Tang
title_short Assessing carbon greenhouse gas emissions from aquaculture in China based on aquaculture system types, species, environmental conditions and management practices
title_full Assessing carbon greenhouse gas emissions from aquaculture in China based on aquaculture system types, species, environmental conditions and management practices
title_fullStr Assessing carbon greenhouse gas emissions from aquaculture in China based on aquaculture system types, species, environmental conditions and management practices
title_full_unstemmed Assessing carbon greenhouse gas emissions from aquaculture in China based on aquaculture system types, species, environmental conditions and management practices
title_sort Assessing carbon greenhouse gas emissions from aquaculture in China based on aquaculture system types, species, environmental conditions and management practices
author_id_str_mv 69af43a3b9da24aef65c5d3a44956fe3
author_id_fullname_str_mv 69af43a3b9da24aef65c5d3a44956fe3_***_Kam Tang
author Kam Tang
author2 Yifei Zhang
Kam Tang
Ping Yang
Hong Yang
Chuan Tong
Changchun Song
Lishan Tan
Guanghui Zhao
Xudong Zhou
Dongyao Sun
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container_volume 338
container_start_page 108110
publishDate 2022
institution Swansea University
issn 0167-8809
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doi_str_mv 10.1016/j.agee.2022.108110
publisher Elsevier BV
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
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department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
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description Aquaculture is one of the fastest growing food production sectors in China, but many of the small-hold operations are poorly assessed for their climate impact. We analyzed the literature data on CO2 and CH4 fluxes from various aquaculture systems in China. The mean fluxes varied from -382.45 to 551.88 g CO2-C m-2 yr-1 and -0.03 to 565.09 g CH4-C m-2 yr-1. Aquaculture system reclaimed from mudflat had the highest CH4 emission (54.92 ± 21.00 g C m-2 yr-1) but lowest CO2 emission. Shrimp aquaculture and semi-intensive farming tended to yield higher CH4 emission. Small and shallow systems had significantly higher CO2 and CH4 emissions, with chlorophyll a and dissolved oxygen concentrations among the main environmental drivers. Management practice such as drainage, exposure and desilting during the non-farming period significantly decreased CH4 emission. We estimated that aquaculture systems in China emitted 181.66 Tg CO2-eq yr-1, enough to offset ~7% of the national terrestrial carbon sink, with most of the emission concentrated in coastal provinces and along the major rivers in the southeastern quadrant. This study highlights the need to account for carbon greenhouse gas emissions from aquaculture to improve the accuracy of the regional and national carbon budgets.
published_date 2022-10-15T16:12:05Z
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score 11.037581

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