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刘泓妤,陈光程,朱小山,陈顺洋,欧丹云,陈家辉.广西北海西村港红树林沉积物温室气体通量及其影响因素[J].广西科学,2026,33(2):281-289. [点击复制]
- LIU Hongyu,CHEN Guangcheng,ZHU Xiaoshan,CHEN Shunyang,OU Danyun,CHEN Jiahui.Greenhouse Gas Fluxes and Their Influencing Factors in Mangrove Sediments of Xicun Bay in Beihai,Guangxi[J].Guangxi Sciences,2026,33(2):281-289. [点击复制]
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| 广西北海西村港红树林沉积物温室气体通量及其影响因素 |
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刘泓妤1,2, 陈光程2,3, 朱小山1, 陈顺洋2,3, 欧丹云2,3, 陈家辉2,3
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| (1.海南大学生态学院, 海南海口 570100;2.自然资源部第三海洋研究所, 福建厦门 361005;3.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: |
| 红树林沉积物作为温室气体二氧化碳(CO2)、甲烷(CH4)和氧化亚氮(N2O)的潜在排放源,其温室气体通量及其影响因素研究是揭示红树林气候调节效应的重要途径。本研究以广西北海西村港红树林为研究对象，对沉积物—大气界面温室气体通量的时空特征及其环境影响因素进行分析。结果显示，西村港红树林沉积物全年(两个季节平均)3种温室气体的增温潜势总和为161.13 mg CO2e·m-2·h-1,CO2的贡献占86.5%。总体上，温室气体通量表现出明显的季节性变化，夏季红树林沉积物是温室气体的源；冬季温室气体通量则低于夏季，表现出弱源或弱汇作用。沉积物温度与3种温室气体通量之间存在显著正相关性，是驱动温室气体通量季节变化的主要因素，CH4通量也与沉积物氧化还原电位呈显著负相关性。本研究结果为北部湾区域红树林沉积物温室气体排放特征积累了本底资料。 |
| 关键词: 红树林 沉积物 二氧化碳 甲烷 氧化亚氮 |
| DOI：10.13656/j.cnki.gxkx.20260603.007 |
| 投稿时间：2026-01-25修订日期：2026-03-22 |
| 基金项目: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)和海南省重点研发项目(ZDYF2023SHFZ172,ZDYF2024SHFZ146)资助。 |
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| Greenhouse Gas Fluxes and Their Influencing Factors in Mangrove Sediments of Xicun Bay in Beihai,Guangxi |
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LIU Hongyu1,2, CHEN Guangcheng2,3, ZHU Xiaoshan1, CHEN Shunyang2,3, OU Danyun2,3, CHEN Jiahui2,3
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| (1.School of Ecology, Hainan University, Haikou, Hainan, 570100, China;2.Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, Fujian, 361005, China;3.Observation and Research Station of Coastal Wetland Ecosystem in Beibu Gulf, Ministry of Natural Resources, Beihai, Guangxi, 536015, China) |
| Abstract: |
| Mangrove sediments are potential sources of greenhouse gases,including carbon dioxide (CO2),methane (CH4),and nitrous oxide (N2O).Investigating sediment greenhouse gas fluxes and their influencing factors helps to understand the role of mangroves in climate regulation.This study focused on the mangrove of Xicun Bay in Beihai,Guangxi to examine the spatiotemporal characteristics of sediment-atmosphere interface greenhouse gas fluxes and their environmental influencing factors.The results showed that the total global warming potential of the three greenhouse gases averaged 161.13 mg CO2e·m-2·h-1 in the Xicun Bay mangrove sediments (mean of two seasons),with CO2 contributing 86.5%.Overall,greenhouse gas fluxes exhibited clear seasonal variations,with mangrove sediments acting as a net source of greenhouse gases in summer,while fluxes in winter were lower,representing a weak source or weak sink.Sediment temperature showed a significantly positive correlation with the fluxes of all three greenhouse gases,being the dominant factor driving seasonal variations in gas fluxes.CH4 flux was significantly negatively correlated with sediment redox potential.These findings enrich the background data on the greenhouse gas emission characteristics of mangrove sediments in the Beibu Gulf region. |
| Key words: mangroves sediments carbon dioxide methane nitrous oxide |
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