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三种不同的红树林物种对沉积物甲排放的潮和季节性影响

Meili Xu¹, Jiaojiao Ma¹, Changjun Gao¹

¹Guangdong Provincial Key Laboratory of Silviculture, Protection and Utilization, Guangdong Academy of Forestry, Guangzhou 510520, China; Guangdong Haifeng Wetland Ecosystem National Observation and Research Station, Guangzhou 510520, China.

The Science of the total environment

|May 1, 2025

概括

红树林沉积物在夏季释放更多的甲 (CH4),潮退后的排放量更高. 有机碳和溶解甲等非生物因素推动了这些排放,而微生物多样性起到了监管作用.

科学领域:

环境科学环境科学
海洋生物学海洋生物学
地质化学地质化学

背景情况:

红树林沉积物创造了适合甲 (CH4) 生产的无氧条件.
了解这些环境中的CH4排放过程对于气候变化研究至关重要.

研究的目的:

为了研究潮和季节对三种红树林物种CH4排放的影响:Sonneratia apetala,Kandelia obovata和Avicennia marina.
确定控制红树林生态系统中CH4流量的关键无生物和生物因素.

主要方法:

在现场监测CH4排放.
实验室实验以评估环境因素的影响.
对沉积物有机碳,溶解的CH4和甲原体社区结构的分析.

主要成果:

夏季的甲排放量明显高于冬季,潮后的甲排放量是潮前的2.14倍.
阿维塞尼亚海 (Avicennia marina) 的CH4排放量最高 (16.77 mg m-2 h-1),其次是索内拉提亚 (Sonneratia apetala) 和坎德利亚 (Kandelia obovata).
沉积物有机碳和溶解的CH4度是CH4排放的主要驱动因素,而甲基生物的α-多样性则抑制了它们.

结论:

非生物因素,特别是沉积物有机碳和溶解甲,显著影响来自红树林沉积物的CH4排放.
潮周期和季节性变化在调节CH4流量方面发挥着至关重要的作用.
沉积物 - 孔水 - 大气通道是从这些重要的沿海生态系统中释放CH4的关键通道.

关键词:

阿维塞尼亚码头是阿维塞尼亚的码头.CH(4) 的流量流量.坎德里亚·奥博瓦塔 (Kandelia obovata) 是一个的植物.红树林湿地红树林湿地甲产物社区的甲产物社区索纳拉提亚的胃口是什么

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