High-resolution record of temporal change in organic matter burial over the past similar to 8,600years on the northwestern continental slope of the South China Sea
文献类型：期刊论文
| 作者 | Tong, Gang2,3; Chen, Lilei1,6; Zhang, Guangxu4; Liu, Jian3; Chen, Bin3; Xu, Gang3; Liu, Ming5; An, Yuhui5; Chen, Duanxin4 |
| 刊名 | FRONTIERS IN EARTH SCIENCE
 |
| 出版日期 | 2023-08-17 |
| 卷号 | 11页码:15 |
| 关键词 | South China Sea continental slope sedimentary organic matter denitrification Asian monsoon changes human activity |
| DOI | 10.3389/feart.2023.1238920 |
| 通讯作者 | Chen, Lilei(llchen@qnlm.ac) ; Chen, Duanxin(chenduanxin07@qdio.ac.can) |
| 英文摘要 | Sedimentary organic matter (SOM) on continental slopes in marine regions can sensitively record climatic and environmental changes. In this study, total organic carbon content (TOC), total nitrogen content (TN), and their stable isotope compositions (delta C-13 and delta N-15) for sediments of core G02 were investigated (at similar to 24.2-year resolution) to reveal the temporal variations in organic matter sources and the main controls on the sources and distribution of buried organic matter on the northwestern continental slope of the South China Sea over the last similar to 8600 years. Results of a delta C-13 binary mixing model reveal that similar to 82.3 +/- 3% of SOM is derived from marine autochthonous sources. We suggest that the carbon and nitrogen contents and compositions of SOM are governed by distinct factors. The more positive delta N-15 values before the Pulleniatina Minimum Event occurrence are ascribed to stronger subsurface water intrusion by the Kuroshio Current, which led to enhanced subsurface denitrification and in turn counteracted the effect of mixing with surface water caused by the East Asian winter monsoon. Sedimentary delta C-13 values show a fluctuant decrease during ca. 8.6-3.0 cal kyr BP and a conspicuous increase during ca. 3.0-1.4 cal kyr BP. These changes are attributed to the decrease of marine productivity induced by the continuous weakening East Asian monsoon effect and the decrease of terrigenous organic carbon input induced by the weakened Indian summer monsoon precipitation, respectively. Since ca. 1.4 cal kyr BP, human activities have become the dominant factor in controlling the production and distribution of organic carbon. The results provide an important basis for understanding of source-sink processes of organic matter and the factors influencing these processes on continental slopes in low-latitude marginal seas. |
| WOS关键词 | ASIAN MONSOON ; SHELF SEDIMENTS ; INNER SHELF ; MILLENNIAL-SCALE ; NITROGEN-SOURCES ; WINTER MONSOON ; CLIMATE-CHANGE ; LATE HOLOCENE ; PEARL RIVER ; ARABIAN SEA |
| 资助项目 | This work was financially supported by the National Natural Science Foundation of China (Grant Nos 41906062, 41906066, 42076070, and 42176071), Natural Science Foundation of Shandong Province, China (Grant Nos ZR2020MD069 and ZR2020MD079) and Asia Cooperat[41906066] ; This work was financially supported by the National Natural Science Foundation of China (Grant Nos 41906062, 41906066, 42076070, and 42176071), Natural Science Foundation of Shandong Province, China (Grant Nos ZR2020MD069 and ZR2020MD079) and Asia Cooperat[42076070] ; This work was financially supported by the National Natural Science Foundation of China (Grant Nos 41906062, 41906066, 42076070, and 42176071), Natural Science Foundation of Shandong Province, China (Grant Nos ZR2020MD069 and ZR2020MD079) and Asia Cooperat[42176071] ; This work was financially supported by the National Natural Science Foundation of China (Grant Nos 41906062, 41906066, 42076070, and 42176071), Natural Science Foundation of Shandong Province, China (Grant Nos ZR2020MD069 and ZR2020MD079) and Asia Cooperat[ZR2020MD069] ; National Natural Science Foundation of China[ZR2020MD079] ; Natural Science Foundation of Shandong Province, China ; Asia Cooperation Fund (Comparative Study of Geoenvironment) ; [41906062] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | FRONTIERS MEDIA SA |
| WOS记录号 | WOS:001058927200001 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/182915]  |
| 专题 | 中国科学院海洋研究所 |
| 通讯作者 | Chen, Lilei; Chen, Duanxin |
| 作者单位 | 1.Deep sea Multidisciplinary Res Ctr, Laoshan Lab, Qingdao, Peoples R China 2.China Univ Geosci, Sch Ocean Sci, Beijing, Peoples R China 3.Qingdao Inst Marine Geol, CGS, Qingdao, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China 5.Ocean Univ China, Coll Marine Geosci, Qingdao, Peoples R China 6.Lab Marine Geol, Laoshan Lab, Qingdao, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tong, Gang,Chen, Lilei,Zhang, Guangxu,et al. High-resolution record of temporal change in organic matter burial over the past similar to 8,600years on the northwestern continental slope of the South China Sea[J]. FRONTIERS IN EARTH SCIENCE,2023,11:15. |
| APA | Tong, Gang.,Chen, Lilei.,Zhang, Guangxu.,Liu, Jian.,Chen, Bin.,...&Chen, Duanxin.(2023).High-resolution record of temporal change in organic matter burial over the past similar to 8,600years on the northwestern continental slope of the South China Sea.FRONTIERS IN EARTH SCIENCE,11,15. |
| MLA | Tong, Gang,et al."High-resolution record of temporal change in organic matter burial over the past similar to 8,600years on the northwestern continental slope of the South China Sea".FRONTIERS IN EARTH SCIENCE 11(2023):15. |
入库方式： OAI收割
来源：海洋研究所
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