河口近海N2O的分布特征及微生物代谢驱动机制

doi:10.11978/2024229

热带海洋学报 ›› 2025, Vol. 44 ›› Issue (4): 1-13.doi: 10.11978/2024229

• 综述 • 下一篇

河口近海N₂O的分布特征及微生物代谢驱动机制

洪义国¹(), 张宝善¹(), 吴佳鹏¹, 龙爱民²^,³

1.广州大学大湾区环境研究院, 珠三角水质安全与保护教育部重点实验室, 广东广州 510007
2.热带海洋环境国家重点实验室(中国科学院南海海洋研究所), 广东广州 510301
3.中国科学院大学, 北京 100049

收稿日期:2024-12-07 修回日期:2025-01-03 出版日期:2025-07-10 发布日期:2025-07-31
通讯作者: 洪义国
作者简介:
洪义国, 教授, 从事流域近海微生物氮循环过程研究, email: yghong@gzhu.edu.cn;
张宝善, 共同第一作者, 博士研究生, 从事流域近海微生物氮循环过程研究, email: 2642101135@qq.com
基金资助:
国家自然科学基金(42276130); 国家自然科学基金(42476141); 广东省粤穗联合基金重点项目(2023B1515120029); 广州市科技计划项目(2025A03J3103)

Distribution characteristics and microbial metabolic driving mechanisms of N₂O in estuarine and coastal waters

HONG Yiguo¹(), ZHANG Baoshan¹(), WU Jiapeng¹, LONG Aimin²^,³

1. Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay Area, Guangzhou University, Guangzhou 510007, China
2. State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
3. University of Chinese Academy of Sciences, Beijing 100049, China

Received:2024-12-07 Revised:2025-01-03 Online:2025-07-10 Published:2025-07-31
Contact: HONG Yiguo
Supported by:
National Natural Science Foundation of China(42276130); National Natural Science Foundation of China(42476141); Basic and Applied Basic Research Foundation of Guangdong Province(2023B1515120029); Science and Technology Planning Project of Guangzhou(2025A03J3103)

摘要/Abstract

摘要：

河口近海区域作为陆地与海洋生态系统的交汇点, 其在氧化亚氮(nitrous oxide, N₂O)的生物地球化学循环中扮演着至关重要的角色。N₂O作为一种强效温室气体, 它在河口近海的分布特征和微生物代谢驱动机制对全球气候变化具有显著影响。本文综述了河口近海区域N₂O的分布特征, N₂O释放的主要微生物代谢途径(硝化过程、硝化细菌反硝化过程、不完全反硝化过程、硝化作用耦合反硝化过程), N₂O产生与消耗过程的测定方法以及N₂O释放的环境影响因素。对河口近海N₂O生物地球化学循环的研究, 有助于我们制定有效的管理策略, 对减少N₂O排放、减缓全球变暖具有重要意义。

关键词: 微生物氮代谢, N₂O, 生物地球化学循环, 河口近海

Abstract:

Estuarine and coastal waters, serving as critical interfaces between terrestrial and marine ecosystems, play a pivotal role in the biogeochemical cycling of nitrous oxide (N₂O), a potent greenhouse gas with significant impacts on global climate change. This review synthesizes current knowledge on the distribution patterns of N₂O in estuarine and coastal regions, the key microbial metabolic pathways driving N₂O emissions—including nitrification, nitrifier denitrification, incomplete denitrification, and coupled nitrification-denitrification—as well as the methodologies for quantifying N₂O production and consumption. Additionally, we examine the environmental factors influencing N₂O emissions. A deeper understanding of N₂O biogeochemical cycling in these waters is crucial for developing effective strategies to mitigate N₂O emissions and their contribution to global warming.

Key words: microbial nitrogen metabolism, N₂O, biogeochemical cycle, estuarine and coastal waters

中图分类号:

洪义国, 张宝善, 吴佳鹏, 龙爱民. 河口近海N₂O的分布特征及微生物代谢驱动机制[J]. 热带海洋学报, 2025, 44(4): 1-13.

HONG Yiguo, ZHANG Baoshan, WU Jiapeng, LONG Aimin. Distribution characteristics and microbial metabolic driving mechanisms of N₂O in estuarine and coastal waters[J]. Journal of Tropical Oceanography, 2025, 44(4): 1-13.

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河口近海N₂O的分布特征及微生物代谢驱动机制

Distribution characteristics and microbial metabolic driving mechanisms of N₂O in estuarine and coastal waters

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