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通过在湖泊沉积物中的无氧甲氧化脱,同时减轻甲和去除

Yanan Bai¹, Wangting Yang², Hanyu Li²

¹School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China; Key Laboratory of Ecosystem Carbon Source and Sink, China Meteorological Administration (ECSS-CMA), School of Ecology and Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China.

The Science of the total environment

|May 11, 2024

概括

湖泊中的无氧甲氧化 (DAMO) 脱化减轻甲排放并去除. 达摩工艺与沉积物中酸盐含量,考古遗迹丰富度,有机碳和水深有关.

科学领域:

环境微生物学环境微生物学
生物地质化学生物地质化学
临界技术临界技术

背景情况:

湖泊生态系统是甲 (CH4) 的重要来源,甲是一种强大的温室气体.
脱无氧甲氧化 (DAMO) 链接碳和循环,但其在湖泊中的作用尚不清楚.
在DAMO过程中,NC10细菌和ANME-2d古菌是介导者.

研究的目的:

研究酸盐和酸盐DAMO活动的空间变化以及湖泊沉积物中的相关微生物群落.
确定DAMO对淡水生态系统中甲减缓和去除的贡献.
为了确定影响浅湖DAMO过程的环境因素.

主要方法:

从中国的丹湖采集湖泊沉积物的样本.
量化NC10细菌和ANME-2d古生物的丰富性.
使用13C标记器测量潜在的酸盐和酸盐DAMO率.
对DAMO活动与环境参数相关性的统计分析.

主要成果:

ANME-2d古细菌的丰富度高于NC10细菌,但DAMO率没有显著差异.
酸盐和酸盐-DAMO消耗了6.46-7.05毫克CH4 m-2 d-1,去除了15.07-24.95毫克N m-2 d-1.
达摩活动与沉积物中酸盐含量和ANME-2d丰度有显著的相关性.
微生物群落的组成与沉积物有机碳和水深有关.

结论:

达摩工艺在减轻甲排放和消除湖泊沉积物中的气方面发挥着双重作用.
沉积物有机碳,无机含量和水深是影响DAMO的关键因素.
这项研究增强了对淡水生态系统中碳和循环的理解.

关键词:

丰富的丰富的丰富的活动活动活动.共同体的组成共同体的组成亚酸盐-DAMO 的使用.亚酸盐-DAMO是一种酸盐.

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