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Divergence of microbial carbon use efficiency and soil organic carbon along a tidal flooding gradient in a subtropical coastal wetland SCIE
期刊论文 | 2025 , 280 | WATER RESEARCH
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Abstract :

Microbial carbon use efficiency (CUE) typically promotes soil organic carbon (SOC) storage in terrestrial ecosystems. However, this relationship remains poorly understood in coastal wetlands, where tidal flooding creates unique environmental conditions, facilitates lateral transfer and SOC loss, and mediates organic matter exchange between terrestrial and marine systems. Here we examined the CUE-SOC relationship across a tidal flooding gradient (4-25 % frequency) in a subtropical coastal wetland. Along this gradient, SOC decreased by 65 % while microbial CUE increased from 0.24 to 0.32. This inverse relationship coincided with marked compositional shifts: plant debris declined from 57 % to 18 %, while microbial necromass increased from 21 % to 35 %. The enhanced CUE was accompanied by increased turnover times alongside decreased metabolic quotient (qCO2), C-acquiring enzyme activities, soil basal respiration, and microbial biomass carbon (MBC). This enhanced efficiency stemmed from substrate-microbe interactions rather than environmental stresses, as communities transitioned from oligotrophic taxa (alpha-proteobacteria, Basidiomycota) specializing in recalcitrant terrestrial substrates to copiotrophic microorganisms (gamma-proteobacteria, Bacteroidota, Ascomycota) efficiently metabolizing labile marine compounds. Contrary to terrestrial patterns, enhanced CUE did not promote SOC storage due to three key mechanisms: (i) enhanced CUE from marine substrates could not compensate for declining plant debris accumulation; (ii) reduced microbial biomass limited necromass formation despite higher CUE; and (iii) metabolic benefits from high CUE (reduced enzyme activities and respiration rates) could not offset the substantial decrease in SOC inputs. Our findings reveal distinct CUE-SOC relationships in coastal wetlands compared to terrestrial ecosystems, highlighting the importance of considering both terrestrial and marine processes in understanding carbon cycling in these transitional environments.

Keyword :

Carbon use efficiency Carbon use efficiency Coastal wetland Coastal wetland Microbial community composition Microbial community composition Soil organic carbon Soil organic carbon Substrate quality Substrate quality Tidal flooding gradient Tidal flooding gradient

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GB/T 7714 Tan, Ji , Huang, Jiafang , Quan, Wenhui et al. Divergence of microbial carbon use efficiency and soil organic carbon along a tidal flooding gradient in a subtropical coastal wetland [J]. | WATER RESEARCH , 2025 , 280 .
MLA Tan, Ji et al. "Divergence of microbial carbon use efficiency and soil organic carbon along a tidal flooding gradient in a subtropical coastal wetland" . | WATER RESEARCH 280 (2025) .
APA Tan, Ji , Huang, Jiafang , Quan, Wenhui , Su, Lifei , Liu, Yi , Cai, Yuanbin et al. Divergence of microbial carbon use efficiency and soil organic carbon along a tidal flooding gradient in a subtropical coastal wetland . | WATER RESEARCH , 2025 , 280 .
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Divergence of microbial carbon use efficiency and soil organic carbon along a tidal flooding gradient in a subtropical coastal wetland EI
期刊论文 | 2025 , 280 | Water Research
Divergence of microbial carbon use efficiency and soil organic carbon along a tidal flooding gradient in a subtropical coastal wetland Scopus
期刊论文 | 2025 , 280 | Water Research
Editorial: Microbial-driven carbon turnover from dry-wet cycling regions SCIE
期刊论文 | 2024 , 15 | FRONTIERS IN MICROBIOLOGY
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Keyword :

aquatic ecosystems aquatic ecosystems carbon cycle carbon cycle dry-wet cycling dry-wet cycling greenhouse gases (GHGs) greenhouse gases (GHGs) microbial metabolism microbial metabolism

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GB/T 7714 Zhang, Peng , Luo, Min , Fu, Chuancheng et al. Editorial: Microbial-driven carbon turnover from dry-wet cycling regions [J]. | FRONTIERS IN MICROBIOLOGY , 2024 , 15 .
MLA Zhang, Peng et al. "Editorial: Microbial-driven carbon turnover from dry-wet cycling regions" . | FRONTIERS IN MICROBIOLOGY 15 (2024) .
APA Zhang, Peng , Luo, Min , Fu, Chuancheng , Xiao, Leilei . Editorial: Microbial-driven carbon turnover from dry-wet cycling regions . | FRONTIERS IN MICROBIOLOGY , 2024 , 15 .
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Editorial: Microbial-driven carbon turnover from dry-wet cycling regions Scopus
其他 | 2024 , 15 | Frontiers in Microbiology
海平面上升对河口感潮沼泽湿地CH_4和CO_2产生和排放的影响:机制与复杂性 CSCD PKU
期刊论文 | 2024 , 39 (05) , 441-453 | 地球科学进展
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Abstract :

海平面上升直接改变河口感潮沼泽的水文和盐度特征,是河口感潮沼泽面临的主要环境问题之一。总结了海平面上升对河口感潮沼泽碳动态影响的研究方法和实验平台,分别从海平面上升引发的盐水入侵和水淹增加2个方面综述海平面上升对河口感潮沼泽CH_4和CO_2排放通量、产生速率和土壤有机碳厌氧矿化途径等方面的影响及其机制。盐水入侵显著降低河口感潮淡水沼泽CH_4产生速率和排放通量,导致土壤有机碳厌氧矿化途径从CH_4产生为主向硫酸盐异化还原为主转变,然而盐水入侵对CO_2排放通量的影响具有不确定性。水淹增加对河口感潮沼泽CH_4和CO_2排放通量影响的报道相对较少,已有研究表明CO_2排放通量随着水淹高度增加而降低。最后提出海平面上升对河口感潮沼泽碳动态影响研究应加强的领域,以期为海平面上升对河口感潮沼泽含碳温室气体动态的影响研究提供参考。

Keyword :

水淹增加 水淹增加 河口感潮沼泽 河口感潮沼泽 海平面上升 海平面上升 盐水入侵 盐水入侵 碳动态 碳动态

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GB/T 7714 仝川 , 罗敏 , 胡敏杰 et al. 海平面上升对河口感潮沼泽湿地CH_4和CO_2产生和排放的影响:机制与复杂性 [J]. | 地球科学进展 , 2024 , 39 (05) : 441-453 .
MLA 仝川 et al. "海平面上升对河口感潮沼泽湿地CH_4和CO_2产生和排放的影响:机制与复杂性" . | 地球科学进展 39 . 05 (2024) : 441-453 .
APA 仝川 , 罗敏 , 胡敏杰 , 王纯 , 刘白贵 , 展鹏飞 . 海平面上升对河口感潮沼泽湿地CH_4和CO_2产生和排放的影响:机制与复杂性 . | 地球科学进展 , 2024 , 39 (05) , 441-453 .
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海平面上升对河口感潮沼泽湿地CH4和CO2产生和排放的影响:机制与复杂性 CSCD PKU
期刊论文 | 2024 , 39 (5) , 441-453 | 地球科学进展
Effects of Sea Level Rise on Production and Emission of CH4 and CO2 in Estuarine Tidal Marshes: Mechanism and Complexity; [海平面上升对河口感潮沼泽湿地 CH4和 CO2 产生和排放的影响:机制与复杂性] Scopus CSCD PKU
期刊论文 | 2024 , 39 (5) , 441-453 | Advances in Earth Science
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Sea-Level Rise (SLR) directly changes the hydrology and salinity of estuarine tidal wetlands and is one of the primary drivers of global change that significantly impacts ecosystem processes. Herein, various methodologies and experimental facilities (marsh organs, weirs, and flow-through mesocosms) for manipulating SLR are systematically reviewed. This study provides a comprehensive summary of the effects and mechanisms associated with SLR regarding the fluxes and production rates of CH4 and CO2, and the pathways and rates of soil organic carbon mineralization from the perspectives of SLR-saltwater intrusion and inundation increase. Saltwater intrusion due to SLR notably decreases CH4 production rates and fluxes. It induces a shift in the pathways of soil organic carbon mineralization, transitioning from CH4 production to microbial SO2-4 reduction in tidal freshwater marshes. The main mechanism reducing saltwater intrusion-induced CH4 flux is the increased presence of the electron acceptor SO2-4, which hinders soil CH4 production. The impact of SLR through saltwater intrusion on CO2 emissions in tidal freshwater marshes exhibits distinct uncertainty. Owing to the inherent challenges in experimentally manipulating SLR in situ, few reports concerning the effects of SLR-related inundation on CH4 and CO2 fluxes and production rates exist. However, some studies have suggested that an increase in inundation height leads to a reduction in CO2 emissions. Additionally, this study consolidates information surrounding electron acceptors and microbial mechanisms associated with SLR that influence the pathways and rates of soil organic carbon mineralization in coastal tidal wetlands. Finally, this study outlines the specific domains that warrant further exploration in future research on the impact of SLR on the production and emission of carbon greenhouse gases in estuarine tidal marshes. © 2024 Science China Press. All rights reserved.

Keyword :

Carbon dynamics Carbon dynamics Estuarine tidal marsh Estuarine tidal marsh Inundation increase Inundation increase Saltwater intrusion Saltwater intrusion Sea level rise Sea level rise

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GB/T 7714 Tong, C. , Luo, M. , Hu, M. et al. Effects of Sea Level Rise on Production and Emission of CH4 and CO2 in Estuarine Tidal Marshes: Mechanism and Complexity; [海平面上升对河口感潮沼泽湿地 CH4和 CO2 产生和排放的影响:机制与复杂性] [J]. | Advances in Earth Science , 2024 , 39 (5) : 441-453 .
MLA Tong, C. et al. "Effects of Sea Level Rise on Production and Emission of CH4 and CO2 in Estuarine Tidal Marshes: Mechanism and Complexity; [海平面上升对河口感潮沼泽湿地 CH4和 CO2 产生和排放的影响:机制与复杂性]" . | Advances in Earth Science 39 . 5 (2024) : 441-453 .
APA Tong, C. , Luo, M. , Hu, M. , Wang, C. , Liu, B. , Zhan, P. . Effects of Sea Level Rise on Production and Emission of CH4 and CO2 in Estuarine Tidal Marshes: Mechanism and Complexity; [海平面上升对河口感潮沼泽湿地 CH4和 CO2 产生和排放的影响:机制与复杂性] . | Advances in Earth Science , 2024 , 39 (5) , 441-453 .
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Inundation counteracts the promoting effect of nitrogen enrichment on soil organic carbon mineralization in a tidal marsh Scopus CSCD
期刊论文 | 2024 | Fundamental Research
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Increased nitrogen (N) loading and sea-level rise (SLR) are two dominant drivers of global change that threaten tidal marshes and the ecosystem services they provide, including the sequestration of organic carbon. Nevertheless, the mechanisms through which N loading enrichment, SLR inundation increase, and their combined effects impact the rates and pathways of soil organic carbon (SOC) mineralization in tidal marshes remain poorly understood. We utilized a factorial design in an oligohaline tidal marsh, utilizing in situ weirs to simulate SLR inundation increase by manipulating the duration of flooding with or without nitrogen enrichment as NaNO3 plus NH4Cl or with a combination of increased flood duration and nitrogen. After nearly 2 years, the addition of N increased total SOC mineralization (CMR), soil microbial Fe(III) reduction (FeRR), NO3– reduction (NRR), and SO42– reduction (SRR) but decreased methanogenesis (MGR). The abiotic factor Fe(III)/Fe(II) ratio and dissolved organic carbon (DOC), and the biotic factors, β-glucosidase (BG), and phenol oxidase (PHO) activity explained the increased SOC mineralization rates following N enrichment. Increased flood duration did not change CMR, but increased flooding offset the stimulatory effects of N addition on CMR, FeRR, SRR, NRR and MGR. The contributions of Fe(III) reduction and SO42– reduction pathways to SOC mineralization increased in all experimental treatments, FeRR, SRR, NRR, and MGR were significantly positively correlated with the abundance of Geobacter, dsrA, nrfA, and mcrA. SLR inundation increase did not increase soil carbon loss in this oligohaline marsh and may counteract the simulation of soil C loss due to N enrichment. © 2024

Keyword :

Carbon decomposition Carbon decomposition Functional microbes Functional microbes Inundation Inundation Nitrogen loading enrichment Nitrogen loading enrichment Oligohaline marsh Oligohaline marsh Sea-level rise Sea-level rise

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GB/T 7714 Tong, C. , Tan, J. , Luo, M. et al. Inundation counteracts the promoting effect of nitrogen enrichment on soil organic carbon mineralization in a tidal marsh [J]. | Fundamental Research , 2024 .
MLA Tong, C. et al. "Inundation counteracts the promoting effect of nitrogen enrichment on soil organic carbon mineralization in a tidal marsh" . | Fundamental Research (2024) .
APA Tong, C. , Tan, J. , Luo, M. , Huang, J. , Xiao, S. , Liu, B. et al. Inundation counteracts the promoting effect of nitrogen enrichment on soil organic carbon mineralization in a tidal marsh . | Fundamental Research , 2024 .
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湿地甲烷代谢对氮输入响应的复杂性及其机制分析 CSCD PKU
期刊论文 | 2024 , (04) | 生态学报
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氮素是影响湿地甲烷代谢过程的重要因素之一。氮输入是否影响湿地甲烷排放,增加全球气候变暖的风险,一直受到科学界的高度关注。目前关于氮输入对湿地甲烷排放影响的几篇meta-analysis文章的主要结论均为氮输入促进湿地甲烷排放,但是多篇研究性论文的结果为氮输入抑制或不影响湿地甲烷排放,由此可见氮输入对湿地甲烷排放的影响十分复杂。湿地甲烷代谢包括湿地甲烷产生、氧化和传输过程以及最终的甲烷排放,综述不同形态氮输入对水稻田、内陆湿地和滨海湿地甲烷排放通量影响的复杂性;分析湿地甲烷产生速率和途径、甲烷好氧氧化和硝酸盐/亚硝酸盐型厌氧甲烷氧化对不同形态氮输入的响应及机制。硝态氮输入对湿地甲烷产生具有抑制作用已成共识,然而其它形态氮输入对湿地土壤甲烷产生的影响具有较大的不确定性,氮输入影响湿地甲烷产生的机制主要包括电子受体-底物竞争机制、离子毒性机制、促进植物生长-碳底物供给增加机制以及pH调控机制等。氮输入对湿地好氧甲烷氧化影响的研究多集中在水稻田和泥炭湿地,影响的结果包括促进、抑制或影响不显著;氮输入促进湿地土壤硝酸盐/亚硝酸盐型厌氧甲烷氧化。本文着重分析氮输入对湿地甲烷代谢影响不确定性的成因,指出湿地甲烷代谢对氮输入的响应是一个生态系统层面的生物地球化学过程,并提出氮输入是最具争议效应的驱动因素之一,其对甲烷代谢的影响很难得出明确的模式,可能需要考虑湿地土壤特征(本底氮含量、有机碳含量、土壤C:N值等)以及植物群落类型和特征,最后提出今后在氮输入对湿地甲烷代谢影响方面应加强的研究领域。

Keyword :

不确定性 不确定性 氮输入 氮输入 湿地 湿地 生态系统特征 生态系统特征 甲烷产生和氧化 甲烷产生和氧化 甲烷通量 甲烷通量

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GB/T 7714 仝川 , 罗敏 , 谭季 . 湿地甲烷代谢对氮输入响应的复杂性及其机制分析 [J]. | 生态学报 , 2024 , (04) .
MLA 仝川 et al. "湿地甲烷代谢对氮输入响应的复杂性及其机制分析" . | 生态学报 04 (2024) .
APA 仝川 , 罗敏 , 谭季 . 湿地甲烷代谢对氮输入响应的复杂性及其机制分析 . | 生态学报 , 2024 , (04) .
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湿地甲烷代谢对氮输入响应的复杂性及其机制分析 CSCD PKU
期刊论文 | 2024 , 44 (4) , 1324-1335 | 生态学报
湿地甲烷代谢对氮输入响应的复杂性及其机制分析 CSCD PKU
期刊论文 | 2024 , 44 (04) , 1324-1335 | 生态学报
Complexity of effects of nitrogen input on methane metabolism in wetlands and mechanism analysis; [湿地甲烷代谢对氮输入响应的复杂性及其机制分析] Scopus CSCD PKU
期刊论文 | 2024 , 44 (4) , 1324-1335 | Shengtai Xuebao
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Nitrogen (N) is one of the key factors that profoundly impact the global methane (CH4) metabolism in wetlands. Whether nitrogen input would increase methane emission from wetlands and risk of global climate warming has been paid much attention. However, the magnitude and direction of methane emission rates in response to nitrogen input on a global scale are still unclear. The main study conclusion in the published meta⁃analysis papers was that nitrogen input increased methane emission from wetlands. But the conclusions also included nitrogen input decrease and did not affect methane emission from wetlands in lots of research papers. Nitrogen input is the driver with the most controversial effects, for which it is difficult to draw univocal patterns. Wetland methane metabolism includes methane production (methanogensis), methane oxidation, methane transport, and their final result of methane emission. This paper reviewed the complexity of; effects of nitrogen input on the methane emission from paddy field, inland wetlands, and coastal wetlands. We also analyzed the responses of the rate and pathway of methane production, aerobic methane oxidation, and nitrate/ nitrite⁃dependent anaerobic methane oxidation to nitrogen input, and their mechanism. NO⁃3⁃N input demonstrated inhibition on methane production, however the effects of input of other forms of nitrogen on methane production showed an uncertainty. The main controlling mechanisms of nitrogen input on methane production included ionic toxicity, promoting plant growth⁃increasing carbon substrate (such as plant litter, root exudates, sloughed⁃off cells, and roots etc.) supply, electron acceptors⁃carbon substrate competition, and pH regulation. The studies of nitrogen input on aerobic methane oxidation mostly focused on the rice fields and peatlands, and the effects included increase, decrease and no⁃effects on methane oxidations. Nitrogen input increased the nitrate/ nitrite⁃dependent anaerobic methane oxidation. We emphatically analyzed the reasons of different influences of nitrogen input on methane metabolism, and proposed that the response of methane metabolism to nitrogen input was a biogeochemistry process at ecosystem level. We also provided a conceptual model that included microbial processes and ecosystem traits factors to predict effects of nitrogen input on methane emissions from wetlands. Finally, we proposed some basic research domains that needed to strengthen in study of effects of nitrogen input on wetland methane metabolism. Overall, our review shed light on the complexity and mechanism of effects of nitrogen input on methane metabolism in wetlands and will help improve ecosystem models for predicting wetland methane flux caused by nitrogen input. © 2024 Science Press. All rights reserved.

Keyword :

CH4 flux CH4 flux CH4 production and oxidation CH4 production and oxidation ecosystem traits ecosystem traits nitrogen input nitrogen input uncertainty uncertainty wetlands wetlands

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GB/T 7714 Tong, C. , Luo, M. , Tan, J. . Complexity of effects of nitrogen input on methane metabolism in wetlands and mechanism analysis; [湿地甲烷代谢对氮输入响应的复杂性及其机制分析] [J]. | Shengtai Xuebao , 2024 , 44 (4) : 1324-1335 .
MLA Tong, C. et al. "Complexity of effects of nitrogen input on methane metabolism in wetlands and mechanism analysis; [湿地甲烷代谢对氮输入响应的复杂性及其机制分析]" . | Shengtai Xuebao 44 . 4 (2024) : 1324-1335 .
APA Tong, C. , Luo, M. , Tan, J. . Complexity of effects of nitrogen input on methane metabolism in wetlands and mechanism analysis; [湿地甲烷代谢对氮输入响应的复杂性及其机制分析] . | Shengtai Xuebao , 2024 , 44 (4) , 1324-1335 .
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“三创五育”背景下“双一流”高校本科人才培养的DIE模式初探及评价
期刊论文 | 2024 , 9 (02) , 53-61 | 高等理科教育
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针对新时代背景下“双一流”高校人才培养的发展需求,在“三创五育”理念指导下,解析基于产学研合作理论引入的DIE模式的内涵,系统阐述了DIE理念贯彻下的教学系统设计并付诸实践,旨在打破教学系、研究所、企业之间的壁垒,为学生学习、实践提供更多样化的渠道。问卷调查结果表明DIE模式在本科生团队协作、学术创造、自信心树立等方面有切实作用,为培养全面发展的高素质本科人才提供了参考。

Keyword :

DIE模式 DIE模式 “三创五育” “三创五育” “双一流”高校 “双一流”高校 本科人才培养 本科人才培养

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GB/T 7714 许章华 , 张超飞 , 罗敏 et al. “三创五育”背景下“双一流”高校本科人才培养的DIE模式初探及评价 [J]. | 高等理科教育 , 2024 , 9 (02) : 53-61 .
MLA 许章华 et al. "“三创五育”背景下“双一流”高校本科人才培养的DIE模式初探及评价" . | 高等理科教育 9 . 02 (2024) : 53-61 .
APA 许章华 , 张超飞 , 罗敏 , 杨远垚 , 刘智才 . “三创五育”背景下“双一流”高校本科人才培养的DIE模式初探及评价 . | 高等理科教育 , 2024 , 9 (02) , 53-61 .
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"三创五育"背景下"双一流"高校本科人才培养的DIE模式初探及评价
期刊论文 | 2024 , (2) , 53-61 | 高等理科教育
Aquaculture drastically increases methane production by favoring acetoclastic rather than hydrogenotrophic methanogenesis in shrimp pond sediments SCIE
期刊论文 | 2023 , 563 | AQUACULTURE
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Emissions of methane (CH4), a major greenhouse gas, should be cut by at least 30% by 2030 according to the last Conference of the Parties, CoP26. Aquaculture pond is a major CH4 emitter, yet the microbial mechanisms ruling methanogenesis by degradation of organic matter in sediments remain unclear. In particular, the respective roles of hydrogenotrophic and acetoclastic methanogenesis, and the impact of aquaculture farming practices are unknown. We studied methanogenesis in the surface sediments from a freshwater and an oligohaline pond before, during, and after shrimp farming. Hydrogenotrophic and acetoclastic contributions were distinguished by acetoclastic inhibition with methylfluoride (CH3F), and by C-13-analysis of CO2 and CH4. We also monitored the methanogenic community structure, dissolved organic carbon (DOC) levels, carbon to nitrogen (C/N) ratios, and humification indices derived from Fourier transform infrared spectroscopy. The results reveal that aquaculture farming practices increased methanogenesis rates, and these increases were explained by higher levels of DOC and lower C/N ratios during farming. Of the total methane produced, 51%-78% was by hydrogenotrophic methanogenesis. However, the total methane contribution from acetoclastic methanogenesis increased from approximately 22% before farming to approximately 45% during and after farming, with a decreasing isotope fractionation factor alpha c and an increasing relative abundance of Methanosaeta acetoclastic methanogen. All hu-mification indices decreased during and after farming compared to before farming due to the input of polysaccharide-rich aquafeed. The close relationship between the humification indices and methanogenesis pathways indicates that the changes in sediment substrate quality drove the variation in the methanogenesis pathways. Increases in salinity decreased the methanogenesis rates but did not change the methanogenesis pathways. Overall, our findings reveal that aquaculture farming practices increase methanogenesis rates and favor acetoclastic over hydrogenotrophic methanogenesis, and that adjusting shrimp diets, increasing salinity, and removing residual aquafeed could reduce methanogenesis.

Keyword :

Acetoclastic methanogenesis Acetoclastic methanogenesis Coastal aquaculture pond Coastal aquaculture pond Hydrogenotrophic methanogenesis Hydrogenotrophic methanogenesis Isotopic fractionation factors Isotopic fractionation factors Methane Methane Methanogenic community structure Methanogenic community structure

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GB/T 7714 Tan, Ji , Lichtfouse, Eric , Luo, Min et al. Aquaculture drastically increases methane production by favoring acetoclastic rather than hydrogenotrophic methanogenesis in shrimp pond sediments [J]. | AQUACULTURE , 2023 , 563 .
MLA Tan, Ji et al. "Aquaculture drastically increases methane production by favoring acetoclastic rather than hydrogenotrophic methanogenesis in shrimp pond sediments" . | AQUACULTURE 563 (2023) .
APA Tan, Ji , Lichtfouse, Eric , Luo, Min , Liu, Yuxiu , Tan, Fengfeng , Zhang, Changwei et al. Aquaculture drastically increases methane production by favoring acetoclastic rather than hydrogenotrophic methanogenesis in shrimp pond sediments . | AQUACULTURE , 2023 , 563 .
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Aquaculture drastically increases methane production by favoring acetoclastic rather than hydrogenotrophic methanogenesis in shrimp pond sediments Scopus
期刊论文 | 2023 , 563 | Aquaculture
河口沼泽湿地转化为养虾塘对土壤胞外酶活性及CO_2和CH_4产生潜力的影响 CSCD PKU
期刊论文 | 2023 , 43 (06) , 460-470 | 环境科学学报
Abstract&Keyword Cite Version(2)

Abstract :

揭示河口沼泽湿地围垦为水产养殖塘对土壤胞外酶活性和含碳温室气体产生的影响,可为评估土地利用/覆盖变化对滨海蓝碳湿地生态系统碳循环的影响提供科学依据.以闽江河口为研究区,对芦苇(Phragmites australis)湿地、短叶茳芏(Cyperus malaccensis)湿地和互花米草(Spartina alterniflora)湿地土壤(0~30 cm)和由其围垦成的养虾塘沉积物(0~30 cm)进行配对采集.通过室内厌氧培养实验,测定沼泽湿地土壤及由其围垦成的养虾塘沉积物的土壤胞外酶活性和CO_2、CH_4产生潜力.与河口沼泽湿地0~30 cm深度土壤相比,养虾塘0~30 cm深度沉积物4种土壤胞外酶活性均值降低27.3%.河口沼泽湿地转化为养虾塘后含碳温室气体产生潜力发生显著变化,芦苇沼泽、短叶茳芏沼泽、互花米草沼泽围垦成养虾塘后CO_2产生潜力分别增加5.1%、38.5%、38.8%,CH_4产生潜力分别降低24.9%、11.1%、21.1%,有机碳厌氧矿化速率分别增加4.9%、38.6%、38.4%.土壤有机碳(SOC)含量是影响土壤/沉积物胞外酶活性的关键因素,土壤胞外酶活性和沉积物电导率分别是河口沼泽湿地土壤和围垦养虾塘沉积物有机碳厌氧矿化速率的主要控制因素.研究表明:河口沼泽湿地围垦成的养虾塘沉积物有机碳厌氧矿化速率较围垦前的沼泽湿地土壤显著增加,可能导致河口沼泽湿地土壤有机碳的损失,不利于“双碳”目标的实现及全球气候变暖的缓解.

Keyword :

二氧化碳产生潜力 二氧化碳产生潜力 养虾塘 养虾塘 沼泽湿地 沼泽湿地 甲烷产生潜力 甲烷产生潜力 胞外酶 胞外酶 闽江河口 闽江河口

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GB/T 7714 胡芳 , 曹琼 , 黄佳芳 et al. 河口沼泽湿地转化为养虾塘对土壤胞外酶活性及CO_2和CH_4产生潜力的影响 [J]. | 环境科学学报 , 2023 , 43 (06) : 460-470 .
MLA 胡芳 et al. "河口沼泽湿地转化为养虾塘对土壤胞外酶活性及CO_2和CH_4产生潜力的影响" . | 环境科学学报 43 . 06 (2023) : 460-470 .
APA 胡芳 , 曹琼 , 黄佳芳 , 罗敏 , 郭萍萍 , 仝川 . 河口沼泽湿地转化为养虾塘对土壤胞外酶活性及CO_2和CH_4产生潜力的影响 . | 环境科学学报 , 2023 , 43 (06) , 460-470 .
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河口沼泽湿地转化为养虾塘对土壤胞外酶活性及CO2和CH4产生潜力的影响 CSCD PKU
期刊论文 | 2023 , 43 (6) , 460-470 | 环境科学学报
河口沼泽湿地转化为养虾塘对土壤胞外酶活性及CO_2和CH_4产生潜力的影响 CSCD PKU
期刊论文 | 2023 , 43 (06) , 460-470 | 环境科学学报
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