海洋低氧区 N2O 的源汇过程和微生物学机制
张晓黎 赵建民
发表期刊海岸科学
2020-05-19
卷号7期号:1页码:34-40
关键词海洋低氧区N2O源汇微生物环境调控
研究领域海岸带微生物多样性和氮的生物地球化学循环
英文摘要Nitrous oxide (N2O) is an important greenhouse gas, which is 300 times more effective per unit weight as a greenhouse gas than CO2 , affecting global climate changes. The ocean hypoxic zones are important sources of N2O, and their N2O output account for half of the net output of marine N2O. Under the background of the expansion of the ocean hypoxic zone induced by rising global temperature and seawater eutrophication, the N2O output may break a new record, accelerating the process of global warming. This article systematically summarized the source-sink processes and distributions of marine N2O and relative microbiology mechanism in various ocean hypoxic zones, including the open ocean minimum oxygen zone (OMZ), the hypoxic zone of continental shelf, estuary and coastal sea, as well as the anaerobic basin. The paper pointed out that the flux and dynamic data of N2O in coastal hypoxic zones induced by anthropogenic activities was more scarce compared with the open ocean hypoxic zones. Moreover, most studies only focused on N2O production process and neglect the consumption process, and were lack of understanding of the regulatory mechanism, which may lead to deviations in the estimation of ocean N2O revenue and expenditure contributions. The comprehensive approach of combining molecular ecology with geochemistry should be a powerful tool for exploring the source and sink, dynamic characteristic and regulation mechanism of N2O in the ocean hypoxic zone in the future.
中文摘要氧化亚氮(N2O)是重要的温室气体,其温室效应约为 CO2 的 300 倍,影响全球气候变化。 海洋低氧区是 N2O 重要的源,其释放量占海洋 N2O 净产出的一半。 在全球气温升高和海水富营养化导致海洋低氧区逐渐扩大的背 景下,海洋 N2O 的释放量可能出现新高,加速全球变暖的进程。 本文从海洋 N2O 的源汇途径、低氧区的类型及其 N2O 的分布特征、海洋 N2O 释放的微生物机理及其环境调控等方面,系统综述了海洋各种低氧区(开阔大洋最小含氧带、 陆架边缘海低氧区、河口近岸低氧区和厌氧海盆)N2O 的源汇过程和微生物学机制。 研究发现:相对于开阔海洋低氧 区,人类活动影响严重的近海低氧区 N2O 的释放通量和动态数据匮乏,而且多数研究只关注 N2O 的产生过程而忽视 了消耗过程,对海洋 N2O 源汇能力的调控机制也缺乏认识,可能导致估算海洋 N2O 收支贡献出现偏差。 分子生态学 结合地球化学的综合手段应该是今后探究海洋低氧区 N2O 溯源、动态特征和调控机制的有力工具。
语种中文
关键词[WOS]Ocean hypoxic zones; N2O; Source-sink; Microbiology; Environmental regulation
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/30234
专题《海岸科学》

作者单位中国科学院烟台海岸带研究所 海岸带生物学与生物资源利用重点实验室 牟平海岸带环境综合试验站

推荐引用方式
GB/T 7714张晓黎 赵建民. 海洋低氧区 N2O 的源汇过程和微生物学机制[J]. 海岸科学,2020,7(1):34-40.
APA张晓黎 赵建民.(2020).海洋低氧区 N2O 的源汇过程和微生物学机制.海岸科学,7(1),34-40.
MLA张晓黎 赵建民."海洋低氧区 N2O 的源汇过程和微生物学机制".海岸科学 7.1(2020):34-40.


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