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海藻埋葬通过调节微生物活动来减轻有机碳和营养素的释放

Lili Xu¹, Qing Wang¹, Xiaoli Ou¹

¹Institute of Hydrobiology, Key Laboratory of Philosophy and Social Science in Guangdong Province, Jinan University/Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangzhou 510632, China.

Marine pollution bulletin

|September 19, 2024

概括

埋藏的海藻分解会减缓营养的释放,并增强海洋碳捕获. 这一过程涉及无氧微生物,并增加了沉积物和海水中的有机碳.

科学领域:

海洋生物学海洋生物学
生物地质化学生物地质化学
环境科学环境科学

背景情况:

在海洋沉积物中埋葬海藻碎片是常见的.
埋藏的海藻对环境的影响和分解机制尚不清楚.

研究的目的:

为了研究不同埋葬条件下的Gracilariopsis lemaneiformis的分解.
为了确定埋葬深度和重量对营养释放和微生物活动的影响.

主要方法:

在180天的时间里模拟了Gracilariopsis lemaneiformis的分解.
不同的埋葬深度 (0厘米和10厘米) 和重量 (10g和20g).
分析的营养释放 (N,P,DOC) 和微生物群体组成.

主要成果:

埋葬减缓了,和溶解有机碳 (DOC) 的释放.
与有机物分解相关的无氧微生物 (例如,Draconibacteribacterium,Desulfuromusa,Sediminispirochaeta) 的增强.
埋葬量增加导致沉积物有机碳 (OC) 增加了3.28%,并丰富了DOC化.

结论:

海藻埋葬显著改变了分解路径和营养循环.
埋葬会增强特定无氧微生物的活性,影响有机物分解.
海藻埋葬在海洋有机碳封存中起着至关重要的作用.

关键词:

碳封存是一种碳封存方式.环境影响环境影响微生物微生物海藻是一种海藻.沉积物埋葬的埋葬方式模拟实验的实验是模拟的.

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