互花米草入侵对亚热带滨海湿地甲烷通量的影响

赵 君惠(温州大学生命与环境科学学院,中国)

DOI: http://dx.doi.org/10.12349/ees.v6i12.8839

Article ID: 8839

摘要


为探究互花米草入侵对亚热带滨海湿地甲烷(CH4)排放的影响,本研究对比分析了互花米草、本地盐沼及光滩3种生境的排放通量。结果显示,互花米草生境的CH4排放通量(1.74±0.22 mg·m-2·h-1)显著高于本地盐沼,光滩最低。其排放机制主要源于互花米草入侵通过增加土壤有机碳含量、甲基化合物等可利用底物以及重塑微生物群落,从而促进了CH4的生成与排放。相关性分析表明,不同生境的CH4排放受不同环境因子驱动。本研究揭示了互花米草入侵对滨海湿地CH4排放的增强效应,为评估其碳循环影响提供了依据。

关键词


甲烷;排放通量;滨海湿地;互花米草

参考


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