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Variable responses of mineral-bound soil organic carbon to land cover change in southern China’s coastal wetlands

Ping Yang Orcid Logo, Guanpeng Chen, Linhai Zhang, Chuan Tong, Hong Yang, Wanyi Zhu, Dongyao Sun Orcid Logo, Lishan Tan Orcid Logo, Yan Hong, Kam Tang Orcid Logo

CATENA, Volume: 242, Start page: 108129

Swansea University Author: Kam Tang Orcid Logo

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DOI (Published version): 10.1016/j.catena.2024.108129

Abstract

The formation of mineral-bound organic carbon (OC) complexes is important for the long-term preservation of soil organic carbon (SOC) in wetlands. Many coastal wetlands globally have been threatened by plant invasion and land development, but information on the effects on mineral-bound OC is limited...

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Published in: CATENA
ISSN: 0341-8162
Published: Elsevier BV 2024
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URI: https://cronfa.swan.ac.uk/Record/cronfa66538
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We measured the soil contents of Ca-OC, Fe(Al)–OC and residual OC across 21 coastal wetlands in southern China that have gone through the same sequence of land cover change, from native mudflats (MFs) to Spartina alterniflora marshes (SAs) then to earthen aquaculture ponds (APs). Residual-OC was the main component of SOC (74.1–78.2 %), followed by Fe(Al)–OC (18.4–22.8 %) and Ca-OC (&amp;lt;3.5 %). All three components in the soil increased when MFs were converted to SAs, but decreased in subsequent conversion of SAs to APs. Land cover change affected Fe(Al)–OC the most, but SOC storage increased more strongly with increasing Ca-OC. Nitrogen supply in the form of NH4+-N and clay content both positively affected the changes in mineral-bound OC. 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spelling v2 66538 2024-05-30 Variable responses of mineral-bound soil organic carbon to land cover change in southern China’s coastal wetlands 69af43a3b9da24aef65c5d3a44956fe3 0000-0001-9427-9564 Kam Tang Kam Tang true false 2024-05-30 BGPS The formation of mineral-bound organic carbon (OC) complexes is important for the long-term preservation of soil organic carbon (SOC) in wetlands. Many coastal wetlands globally have been threatened by plant invasion and land development, but information on the effects on mineral-bound OC is limited. We measured the soil contents of Ca-OC, Fe(Al)–OC and residual OC across 21 coastal wetlands in southern China that have gone through the same sequence of land cover change, from native mudflats (MFs) to Spartina alterniflora marshes (SAs) then to earthen aquaculture ponds (APs). Residual-OC was the main component of SOC (74.1–78.2 %), followed by Fe(Al)–OC (18.4–22.8 %) and Ca-OC (&lt;3.5 %). All three components in the soil increased when MFs were converted to SAs, but decreased in subsequent conversion of SAs to APs. Land cover change affected Fe(Al)–OC the most, but SOC storage increased more strongly with increasing Ca-OC. Nitrogen supply in the form of NH4+-N and clay content both positively affected the changes in mineral-bound OC. Our results suggest that different land cover change scenarios had different effects on the amounts of mineral-bound OC and their liability to microbial turnover, resulting in different degrees of SOC preservation and carbon emissions. Journal Article CATENA 242 108129 Elsevier BV 0341-8162 Soil organic carbon stability, Mineral-bound OC, Chemical protection, Coastal wetland, Habitat change 1 7 2024 2024-07-01 10.1016/j.catena.2024.108129 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University Not Required The study was funded by the Natural Science Foundation of Fujian Province (No. 2021 J01178, 2022R1002006), the National Natural Science Foundation of China (No. 41801070, 41671088), and the Minjiang Scholar Programme. 2024-06-27T16:32:05.8826855 2024-05-30T07:45:25.7142642 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Ping Yang 0000-0002-5212-6065 1 Guanpeng Chen 2 Linhai Zhang 3 Chuan Tong 4 Hong Yang 5 Wanyi Zhu 6 Dongyao Sun 0000-0003-2023-8799 7 Lishan Tan 0000-0002-9714-1728 8 Yan Hong 9 Kam Tang 0000-0001-9427-9564 10 66538__30659__d924377ca851426b9511c6c81ffcff80.pdf CATENA_author final.pdf 2024-06-17T14:23:05.8847325 Output 2326092 application/pdf Accepted Manuscript true Author accepted manuscript document released under the terms of a Creative Commons CC-BY licence using the Swansea University Research Publications Policy (rights retention). true eng https://creativecommons.org/licenses/by/4.0/deed.en
title Variable responses of mineral-bound soil organic carbon to land cover change in southern China’s coastal wetlands
spellingShingle Variable responses of mineral-bound soil organic carbon to land cover change in southern China’s coastal wetlands
Kam Tang
title_short Variable responses of mineral-bound soil organic carbon to land cover change in southern China’s coastal wetlands
title_full Variable responses of mineral-bound soil organic carbon to land cover change in southern China’s coastal wetlands
title_fullStr Variable responses of mineral-bound soil organic carbon to land cover change in southern China’s coastal wetlands
title_full_unstemmed Variable responses of mineral-bound soil organic carbon to land cover change in southern China’s coastal wetlands
title_sort Variable responses of mineral-bound soil organic carbon to land cover change in southern China’s coastal wetlands
author_id_str_mv 69af43a3b9da24aef65c5d3a44956fe3
author_id_fullname_str_mv 69af43a3b9da24aef65c5d3a44956fe3_***_Kam Tang
author Kam Tang
author2 Ping Yang
Guanpeng Chen
Linhai Zhang
Chuan Tong
Hong Yang
Wanyi Zhu
Dongyao Sun
Lishan Tan
Yan Hong
Kam Tang
format Journal article
container_title CATENA
container_volume 242
container_start_page 108129
publishDate 2024
institution Swansea University
issn 0341-8162
doi_str_mv 10.1016/j.catena.2024.108129
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 The formation of mineral-bound organic carbon (OC) complexes is important for the long-term preservation of soil organic carbon (SOC) in wetlands. Many coastal wetlands globally have been threatened by plant invasion and land development, but information on the effects on mineral-bound OC is limited. We measured the soil contents of Ca-OC, Fe(Al)–OC and residual OC across 21 coastal wetlands in southern China that have gone through the same sequence of land cover change, from native mudflats (MFs) to Spartina alterniflora marshes (SAs) then to earthen aquaculture ponds (APs). Residual-OC was the main component of SOC (74.1–78.2 %), followed by Fe(Al)–OC (18.4–22.8 %) and Ca-OC (&lt;3.5 %). All three components in the soil increased when MFs were converted to SAs, but decreased in subsequent conversion of SAs to APs. Land cover change affected Fe(Al)–OC the most, but SOC storage increased more strongly with increasing Ca-OC. Nitrogen supply in the form of NH4+-N and clay content both positively affected the changes in mineral-bound OC. Our results suggest that different land cover change scenarios had different effects on the amounts of mineral-bound OC and their liability to microbial turnover, resulting in different degrees of SOC preservation and carbon emissions.
published_date 2024-07-01T16:32:05Z
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