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Landscape Change Affects Soil Organic Carbon Mineralization and Greenhouse Gas Production in Coastal Wetlands

Ping Yang Orcid Logo, Linhai Zhang, Derrick Y. F. Lai Orcid Logo, Hong Yang Orcid Logo, Lishan Tan Orcid Logo, Liangjuan Luo, Chuan Tong, Yan Hong, Wanyi Zhu, Kam Tang Orcid Logo

Global Biogeochemical Cycles, Volume: 36, Issue: 12

Swansea University Author: Kam Tang Orcid Logo

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DOI (Published version): 10.1029/2022gb007469

Abstract

Plant invasion and aquaculture activities have drastically modified the landscape of coastal wetlands in many countries, but their impacts on soil organic carbon (SOC) mineralization and greenhouse gas production remain poorly understood. We measured SOC mineralization rate and soil CO2 and CH4 prod...

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Published in: Global Biogeochemical Cycles
ISSN: 0886-6236 1944-9224
Published: American Geophysical Union (AGU) 2022
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URI: https://cronfa.swan.ac.uk/Record/cronfa62131
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We measured SOC mineralization rate and soil CO2 and CH4 production rates in three habitat types from 21 coastal sites across the tropical and subtropical zones in China: native mudflats (MFs), Spartina alterniflora marshes (SAs) and aquaculture ponds (APs). Landscape change from MFs to SAs or APs increased total and labile fraction of SOC, as well as carbon mineralization rate and greenhouse gas production, but there were no discernible differences in SOC source-sink dynamics between SAs and APs. SOC mineralization rate was highest in SAs (20.4 &#x3BC;g g-1 d-1), followed by APs (16.9 &#x3BC;g g-1 d-1) and MFs (11.9 &#x3BC;g g-1 d-1), with CO2 as the dominant by-product. Bioavailable SOC was less than 2% and was turned over within 60 days in all three habitat types. Proliferation of S. alterniflora marshes and expansion of aquaculture pond construction had resulted in a net increase in soil CO2-eq production of 0.4&#x2013;4.3 Tg yr-1 in the last three decades. 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spelling 2023-01-09T10:35:56.1254365 v2 62131 2022-12-06 Landscape Change Affects Soil Organic Carbon Mineralization and Greenhouse Gas Production in Coastal Wetlands 69af43a3b9da24aef65c5d3a44956fe3 0000-0001-9427-9564 Kam Tang Kam Tang true false 2022-12-06 SBI Plant invasion and aquaculture activities have drastically modified the landscape of coastal wetlands in many countries, but their impacts on soil organic carbon (SOC) mineralization and greenhouse gas production remain poorly understood. We measured SOC mineralization rate and soil CO2 and CH4 production rates in three habitat types from 21 coastal sites across the tropical and subtropical zones in China: native mudflats (MFs), Spartina alterniflora marshes (SAs) and aquaculture ponds (APs). Landscape change from MFs to SAs or APs increased total and labile fraction of SOC, as well as carbon mineralization rate and greenhouse gas production, but there were no discernible differences in SOC source-sink dynamics between SAs and APs. SOC mineralization rate was highest in SAs (20.4 μg g-1 d-1), followed by APs (16.9 μg g-1 d-1) and MFs (11.9 μg g-1 d-1), with CO2 as the dominant by-product. Bioavailable SOC was less than 2% and was turned over within 60 days in all three habitat types. Proliferation of S. alterniflora marshes and expansion of aquaculture pond construction had resulted in a net increase in soil CO2-eq production of 0.4–4.3 Tg yr-1 in the last three decades. Future studies will benefit from better census and monitoring of coastal habitats in China, complementary in situ measurements of greenhouse gas emissions, and more sampling in the southern provinces to improve spatial resolution. Journal Article Global Biogeochemical Cycles 36 12 American Geophysical Union (AGU) 0886-6236 1944-9224 soil organic carbon (SOC); anaerobic carbon mineralization; coastal wetland; Spartina alterniflora invasion; aquaculture reclamation; habitat modification 14 12 2022 2022-12-14 10.1029/2022gb007469 COLLEGE NANME Biosciences COLLEGE CODE SBI Swansea University Not Required National Natural Science Foundation of China. Grant Numbers: 41801070, 41671088 National Science Foundation of Fujian Province. Grant Numbers: 2020J01136, 2019J05067 Minjiang Scholar Programme 2023-01-09T10:35:56.1254365 2022-12-06T16:07:32.3036426 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Ping Yang 0000-0002-5212-6065 1 Linhai Zhang 2 Derrick Y. F. Lai 0000-0002-1225-9904 3 Hong Yang 0000-0001-9940-8273 4 Lishan Tan 0000-0002-9714-1728 5 Liangjuan Luo 6 Chuan Tong 7 Yan Hong 8 Wanyi Zhu 9 Kam Tang 0000-0001-9427-9564 10 62131__26023__62d41e2ba22e44c386fcf8aebec85052.pdf GBC accepted 05Dec2022.pdf 2022-12-06T16:10:20.8795967 Output 15488008 application/pdf Accepted Manuscript true true eng 157 true https://doi.org/10.17632/d4sp5hkmmm.1
title Landscape Change Affects Soil Organic Carbon Mineralization and Greenhouse Gas Production in Coastal Wetlands
spellingShingle Landscape Change Affects Soil Organic Carbon Mineralization and Greenhouse Gas Production in Coastal Wetlands
Kam Tang
title_short Landscape Change Affects Soil Organic Carbon Mineralization and Greenhouse Gas Production in Coastal Wetlands
title_full Landscape Change Affects Soil Organic Carbon Mineralization and Greenhouse Gas Production in Coastal Wetlands
title_fullStr Landscape Change Affects Soil Organic Carbon Mineralization and Greenhouse Gas Production in Coastal Wetlands
title_full_unstemmed Landscape Change Affects Soil Organic Carbon Mineralization and Greenhouse Gas Production in Coastal Wetlands
title_sort Landscape Change Affects Soil Organic Carbon Mineralization and Greenhouse Gas Production in Coastal Wetlands
author_id_str_mv 69af43a3b9da24aef65c5d3a44956fe3
author_id_fullname_str_mv 69af43a3b9da24aef65c5d3a44956fe3_***_Kam Tang
author Kam Tang
author2 Ping Yang
Linhai Zhang
Derrick Y. F. Lai
Hong Yang
Lishan Tan
Liangjuan Luo
Chuan Tong
Yan Hong
Wanyi Zhu
Kam Tang
format Journal article
container_title Global Biogeochemical Cycles
container_volume 36
container_issue 12
publishDate 2022
institution Swansea University
issn 0886-6236
1944-9224
doi_str_mv 10.1029/2022gb007469
publisher American Geophysical Union (AGU)
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 Plant invasion and aquaculture activities have drastically modified the landscape of coastal wetlands in many countries, but their impacts on soil organic carbon (SOC) mineralization and greenhouse gas production remain poorly understood. We measured SOC mineralization rate and soil CO2 and CH4 production rates in three habitat types from 21 coastal sites across the tropical and subtropical zones in China: native mudflats (MFs), Spartina alterniflora marshes (SAs) and aquaculture ponds (APs). Landscape change from MFs to SAs or APs increased total and labile fraction of SOC, as well as carbon mineralization rate and greenhouse gas production, but there were no discernible differences in SOC source-sink dynamics between SAs and APs. SOC mineralization rate was highest in SAs (20.4 μg g-1 d-1), followed by APs (16.9 μg g-1 d-1) and MFs (11.9 μg g-1 d-1), with CO2 as the dominant by-product. Bioavailable SOC was less than 2% and was turned over within 60 days in all three habitat types. Proliferation of S. alterniflora marshes and expansion of aquaculture pond construction had resulted in a net increase in soil CO2-eq production of 0.4–4.3 Tg yr-1 in the last three decades. Future studies will benefit from better census and monitoring of coastal habitats in China, complementary in situ measurements of greenhouse gas emissions, and more sampling in the southern provinces to improve spatial resolution.
published_date 2022-12-14T04:21:31Z
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score 11.037275

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