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在潮周期期间,从红树林土壤中冲洗甲和二氧化碳排放

Chiao-Wen Lin¹, Wei-Jen Lin², Chuan-Wen Ho²

¹Department of Marine Environment and Engineering, The Center for Water Resources Studies, National Sun Yat-sen University, Kaohsiung 80424, Taiwan.

The Science of the total environment

|February 10, 2024

概括

在红树林中测量温室气体 (GHG) 排放需要的不仅仅是低潮测量. 甲 (CH4) 和二氧化碳 (CO2) 的峰值排放发生在洪水潮开始时,而不仅仅是在低潮时期.

科学领域:

环境科学环境科学
海洋生物学海洋生物学
气候科学气候科学

背景情况:

红树林土壤是重要的碳汇,但也可以排放温室气体 (GHG).
潮周期会影响这些沿海生态系统的温室气体动态.
准确测量温室气体排放对于理解红树林在气候调节中的作用至关重要.

研究的目的:

测试假设,低潮测量单独可以代表红树林中的白天温室气体排放.
量化不同红树林物种在潮周期期间的甲 (CH4) 和二氧化碳 (CO2) 排放量.
在红树林生态系统中确定温室气体流量测量的最佳时间.

主要方法:

在潮周期期间使用超便携式气体分析仪量化CH4和CO2流量.
研究了Kandelia obovata (没有气) 和Avicennia marina (有气) 的红树林.
在夏季和秋季进行测量,以捕捉季节性变化.

主要成果:

温室气体排放量随着潮周期而显著变化,在洪水潮开始时达到顶峰.
CH4流量显示了K. obovata和A. marina之间明显的模式,可能是由于根结构.
两种物种的二氧化碳流量模式都相似,这表明表面土壤的影响.

结论:

低潮测量不足以代表红树林中的白天温室气体排放.
潮周期,特别是洪水的出现,是温室气体排放的关键驱动因素.
建议在洪水和潮开始时增加测量,以减少温室气体流量估计的不确定性.

关键词:

阿维塞尼亚码头是阿维塞尼亚的码头.二氧化碳是二氧化碳中的一种.坎德里亚·奥博瓦塔 (Kandelia obovata) 是一个的植物.红树林红树林是一种甲甲是一种潮周期是因为潮周期.

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