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吴书沨,郑鹏翔,王静,陈顺洋,范敏,陈家辉,陈光程.廉州湾贝克喜盐草海草床夏季温室气体通量及其影响因素[J].广西科学,2026,33(2):315-323. [点击复制]
- WU Shufeng,ZHENG Pengxiang,WANG Jing,CHEN Shunyang,FAN Min,CHEN Jiahui,CHEN Guangcheng.Greenhouse Gases Fluxes in Summer and Their Influencing Factors at Halophila beccarii Seagrass Bed in Lianzhou Bay[J].Guangxi Sciences,2026,33(2):315-323. [点击复制]
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| 廉州湾贝克喜盐草海草床夏季温室气体通量及其影响因素 |
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吴书沨1,2, 郑鹏翔2, 王静3, 陈顺洋2,4, 范敏3, 陈家辉2,4, 陈光程2,4
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| (1.福建农林大学海洋学院, 福建福州 350002;2.自然资源部第三海洋研究所, 福建厦门 361005;3.北京市企业家环保基金会, 北京 100012;4.自然资源部北部湾滨海湿地生态系统野外科学观测研究站, 广西北海 536015) |
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| 摘要: |
| 为探究潮间带海草床对气候变暖的调节作用，本研究以广西廉州湾潮间带的贝克喜盐草(Halophila beccarii)海草床及其邻近光滩为研究对象，使用静态气密箱法分析夏季海草床/光滩湿地与大气界面二氧化碳(CO2)、甲烷(CH4)和氧化亚氮(N2O)3种温室气体通量及其与海草植被参数、土壤参数的相关性。结果表明，海草床和光滩之间的N2O和CH4通量基本无显著性差异。CO2通量受到光照条件的影响，在明箱和暗箱条件下海草床比光滩表现出更强的CO2汇/源的作用。海草茎枝密度、叶片密度和生物量对温室气体通量的影响强于土壤参数，这些海草植被参数与暗箱CO2通量均呈显著正相关性。海草床和光滩温室气体通量的增温潜势分别为-55.67、-17.30 mg CO2e·m-2·h-1。综上可知,海草植被是影响海草床与大气界面CO2通量的主要因素，并进一步影响海草床减缓大气增温效应的强度。 |
| 关键词: 潮间带 蓝碳 二氧化碳 甲烷 氧化亚氮 全球增温潜势 |
| DOI：10.13656/j.cnki.gxkx.20251229.002 |
| 投稿时间：2025-06-30修订日期：2025-07-30 |
| 基金项目:科技基础资源调查专项(2023FY100804)和自然资源部第三海洋研究所基本科研业务费资助项目(海三科2020017)资助。 |
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| Greenhouse Gases Fluxes in Summer and Their Influencing Factors at Halophila beccarii Seagrass Bed in Lianzhou Bay |
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WU Shufeng1,2, ZHENG Pengxiang2, WANG Jing3, CHEN Shunyang2,4, FAN Min3, CHEN Jiahui2,4, CHEN Guangcheng2,4
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| (1.College of Marine Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China;2.Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, Fujian, 361005, China;3.Society of Entrepreneurs & Ecology Foundation, Beijing, 100012, China;4.Observation and Research Station of Coastal Wetland Ecosystem in Beibu Gulf, Ministry of Natural Resources, Beihai, Guangxi, 536015, China) |
| Abstract: |
| To explore the regulatory effect of intertidal seagrass bed on climate change,this study employed the static chamber technique to measure the fluxes of three greenhouse gases (CO2,CH4,and N2O) within Halophila beccarii seagrass bed and an adjacent unvegetated intertidal bare flat,and tested their relationships with seagrass vegetation parameters and soil parameters.The results showed that both N2O and CH4 fluxes were comparable between the two sites.While the CO2 flux was related to the light condition,the seagrass bed showed a stronger CO2 sink or source under light or dark conditions than the bare flat.Seagrass shoot density,leaf density,and biomass showed stronger influences on greenhouse gas fluxes than soil parameters,and these seagrass vegetation parameters had significantly positive correlations with the dark flux of CO2.The global warming potential of the greenhouse gas fluxes was -55.67 and -17.30 mg CO2e·m-2·h-1 at the seagrass bed and bare flat,respectively.Overall,seagrass vegetation is the main factor affecting the CO2 flux at the seagrass bed and atmosphere interface,and further affects the intensity of seagrass beds in mitigating atmospheric warming effects. |
| Key words: intertidal zone blue carbon carbon dioxide methane nitrous oxide global warming potential |
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