| 本文已被：浏览 719次 下载 1117次 |
码上扫一扫！ |
|
|
| 海洋沉积物中铁保护的有机碳埋藏研究进展 |
|
林德菊1,2,3, 王楠4,5, 李浩帅1,2, 张海洋1,2, 包锐1,2,3
|
|
1.中国海洋大学 海洋化学理论与工程技术教育部重点实验室与深海圈层与地球系统前沿科学中心, 山东 青岛 266100;2.青岛海洋科学与技术试点国家实验室 海洋生态与环境科学功能实验室, 山东 青岛 266237;3.南方海洋科学与工程广东省实验室(广州), 广东 广州 511458;4.中国海洋大学 海底科学与探测技术教育部重点实验室, 山东 青岛 266100;5.中国海洋大学 海洋地球科学学院, 山东 青岛 266100
|
|
| 摘要: |
| 研究表明,海洋沉积物中有超过20%的有机碳是通过与铁结合而被稳定地保存下来,阐明铁对有机碳的保护作用能深入理解碳封存机制。本文1)从与铁结合的有机碳的含量、碳同位素和二者的结合机制等方面梳理了铁在促进有机碳埋藏中所发挥的作用;2)阐述海洋环境(包括水动力和氧化还原条件)和有机碳来源等因素可能控制着铁与有机碳之间的相互耦合,并影响着与铁结合的有机碳的分布、组成和年龄特征;3)分析铁与有机碳之间吸附和共沉淀的结合机制,讨论了影响二者结合方式的因素;4)探讨铁循环与碳循环之间的密切生物地球化学联系在海洋碳封存中的作用。综合梳理了沉积物中“生锈的碳汇”(rusty sink)的研究进展,对当前应对碳中和-全球气候变化具有重要意义。 |
| 关键词: 海洋沉积物 有机碳 铁保护 碳埋藏 铁-碳相互作用 |
| DOI：10.11759/hykx20230927001 |
| 分类号:P734 |
| 基金项目:国家自然科学基金项目(92058207,42076037);南方海洋科学与工程广东省实验室(广州)人才团队引进重大专项(GML2019ZD0209) |
|
| Preservation of sedimentary organic carbon protected by iron: a review |
|
LIN De-ju1,2,3, WANG Nan4,5, LI Hao-shuai1,2, ZHANG Hai-yang1,2, BAO Rui1,2,3
|
|
1.Key Laboratory of Marine Chemistry Theory and Engineering Technology of Ministry of Education and Frontier Science Center for Deep Ocean Sphere and Earth System, Ocean University of China, Qingdao 266100, China;2.Laboratory for Marine Ecology and Enviromental Science, Pilot National Laboratory for Marine Science and Technology(Qingdao), Qingdao 266237, China;3.Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou), Guangzhou 511458, China;4.Key Laboratory of Submarine Geosciences and Prospecting Techniques, MOE, Ocean University of China, Qingdao 266100, China;5.College of Marine Geosciences, Ocean University of China, Qingdao 266100, China
|
| Abstract: |
| The stable burial of organic carbon (OC) in marine sediment has a long-time regulatory impact on global climate change. Recent research has demonstrated that binding with iron (Fe) oxides stabilizes the preservation of more than 20% of OC in surface marine sediments. Therefore, it is crucial to reasonably elaborate on the protection of Fe in the preservation of OC for a deeper understanding of carbon sequestration mechanisms. We reviewed 1) the crucial role of Fe in promoting the burial of OC in sediments from various aspects, such as the content, properties, and interactional mechanism nature of OC related to Fe (OC-Fe); 2) the marine environment (hydrodynamic and redox conditions) and OC sources not only control the coupling of OC-Fe, but also profoundly influence the distribution, composition, and age distribution of OC-Fe; 3) the influencing factors, protective effects, and mechanisms of Fe on OC in marine sediments; and 4) the role of close biogeochemical association between iron and carbon cycles in marine carbon sequestration. In conclusion, this study thoroughly summarizes the research progress of “rusty sink” in sediments, which is meaningful for the current response to carbon neutrality and global climate change. |
| Key words: marine sediment organic carbon iron protection carbon preservation iron-carbon interaction |