Conversion of earthen aquaculture ponds to integrated mangrove-aquaculture systems significantly reduced the emissions of CH4 and N2O

IF 5.9 1区地球科学 Q1 ENGINEERING, CIVIL

Journal of Hydrology Pub Date : 2025-01-13 DOI:10.1016/j.jhydrol.2025.132692

Zhinan Su, Guanglong Qiu, Ping Yang, Hong Yang, Wenjing Liu, Lishan Tan, Linhai Zhang, Dongyao Sun, Jiafang Huang, Kam W. Tang

{"title":"Conversion of earthen aquaculture ponds to integrated mangrove-aquaculture systems significantly reduced the emissions of CH4 and N2O","authors":"Zhinan Su, Guanglong Qiu, Ping Yang, Hong Yang, Wenjing Liu, Lishan Tan, Linhai Zhang, Dongyao Sun, Jiafang Huang, Kam W. Tang","doi":"10.1016/j.jhydrol.2025.132692","DOIUrl":null,"url":null,"abstract":"Mangrove ecosystem helps mitigate regional and global climate change, but increasing land reclamation for aquaculture has degraded many mangroves wetlands. Integrated mangrove wetland-aquaculture systems can be a promising way to support both mangrove restoration and aquaculture, but its impacts on greenhouse gas emissions remain largely unknown. In this study, we compared CH<ce:inf loc=\"post\">4</ce:inf> and N<ce:inf loc=\"post\">2</ce:inf>O fluxes between earthen aquaculture ponds (EAPs) and integrated mangrove-aquaculture systems (IMASs) in Beibu Gulf in southern China. Results showed that both EAPs and IMASs were CH<ce:inf loc=\"post\">4</ce:inf> and N<ce:inf loc=\"post\">2</ce:inf>O emission sources with strong temporal variabilities. CH<ce:inf loc=\"post\">4</ce:inf> fluxes were primarily affected by total organic carbon, dissolved oxygen and salinity. These fluxes were significantly larger in EAPs (976.3 ± 146.4µg m<ce:sup loc=\"post\">-2</ce:sup>h<ce:sup loc=\"post\">−1</ce:sup>) than in IMASs (60.3 ± 7.7µg m<ce:sup loc=\"post\">-2</ce:sup>h<ce:sup loc=\"post\">−1</ce:sup>). Ebullition was responsible for 52.9–93.4 % of the total CH<ce:inf loc=\"post\">4</ce:inf> emission. The average N<ce:inf loc=\"post\">2</ce:inf>O flux in EAPs (3.4 ± 0.5µg m<ce:sup loc=\"post\">-2</ce:sup>h<ce:sup loc=\"post\">−1</ce:sup>) was 5.7 times higher than IMASs during the farming period and was mainly driven by nitrogenous substrate availability. The results highlight that integrated mangrove wetland-aquaculture systems can not only promote mangrove restoration and support aquaculture, but also mitigate greenhouse gases emissions from coastal wetlands.","PeriodicalId":362,"journal":{"name":"Journal of Hydrology","volume":"9 1","pages":""},"PeriodicalIF":5.9000,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Hydrology","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1016/j.jhydrol.2025.132692","RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}

引用次数: 0

Abstract

Mangrove ecosystem helps mitigate regional and global climate change, but increasing land reclamation for aquaculture has degraded many mangroves wetlands. Integrated mangrove wetland-aquaculture systems can be a promising way to support both mangrove restoration and aquaculture, but its impacts on greenhouse gas emissions remain largely unknown. In this study, we compared CH4 and N2O fluxes between earthen aquaculture ponds (EAPs) and integrated mangrove-aquaculture systems (IMASs) in Beibu Gulf in southern China. Results showed that both EAPs and IMASs were CH4 and N2O emission sources with strong temporal variabilities. CH4 fluxes were primarily affected by total organic carbon, dissolved oxygen and salinity. These fluxes were significantly larger in EAPs (976.3 ± 146.4µg m-2h−1) than in IMASs (60.3 ± 7.7µg m-2h−1). Ebullition was responsible for 52.9–93.4 % of the total CH4 emission. The average N2O flux in EAPs (3.4 ± 0.5µg m-2h−1) was 5.7 times higher than IMASs during the farming period and was mainly driven by nitrogenous substrate availability. The results highlight that integrated mangrove wetland-aquaculture systems can not only promote mangrove restoration and support aquaculture, but also mitigate greenhouse gases emissions from coastal wetlands.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Hydrology 地学-地球科学综合

CiteScore

11.00

自引率

12.50%

发文量

1309

审稿时长

7.5 months

期刊介绍： The Journal of Hydrology publishes original research papers and comprehensive reviews in all the subfields of the hydrological sciences including water based management and policy issues that impact on economics and society. These comprise, but are not limited to the physical, chemical, biogeochemical, stochastic and systems aspects of surface and groundwater hydrology, hydrometeorology and hydrogeology. Relevant topics incorporating the insights and methodologies of disciplines such as climatology, water resource systems, hydraulics, agrohydrology, geomorphology, soil science, instrumentation and remote sensing, civil and environmental engineering are included. Social science perspectives on hydrological problems such as resource and ecological economics, environmental sociology, psychology and behavioural science, management and policy analysis are also invited. Multi-and interdisciplinary analyses of hydrological problems are within scope. The science published in the Journal of Hydrology is relevant to catchment scales rather than exclusively to a local scale or site.