The role of earthquakes and storms in the fluvial export of terrestrial organic carbon along the eastern margin of the Tibetan plateau: A biomarker perspective
文献类型：期刊论文
| 作者 | Wang Jin1,3,5; Ma Tian1,2 ; Zhang Fei3; Hilton Robert G.4; Feng Xiaojuan1; Jin Zhangdong3
|
| 刊名 | Frontiers in Earth Science
 |
| 出版日期 | 2023-01 |
| 卷号 | 10页码:1090983 |
| 关键词 | particulate organic carbon, landslide, Wenchuan earthquake, debris flow, biomarker, organic carbon source |
| ISSN号 | 2296-6463 |
| DOI | particulate organic carbon; landslide; Wenchuan earthquake; debris flow; biomarker; organic carbon source |
| 文献子类 | Article |
| 英文摘要 | Driven by earthquakes and intense rainfall, steep tectonically active mountains are hotspots of terrestrial organic carbon mobilization from soils, rocks, and vegetation by landslides into rivers. Subsequent delivery and fluvial mobilization of organic carbon from different sources can impact atmospheric CO2 concentrations across a range of timescales. Extreme landslide triggering events can provide insight on processes and rates of carbon export. Here we used suspended sediment collected from 2005 to 2012 at the upper Min Jiang, a main tributary of the Yangtze River on the eastern margin of the Tibetan Plateau, to compare the erosion of terrestrial organic carbon before and after the 2008 Wenchuan earthquake and a storm-derived debris flow event in 2005. To constrain the source of riverine particulate organic carbon (POC), we quantified lignin phenols and n-alkanoic acids in the suspended sediments, catchment soils and landslide deposits. We found that riverine POC had higher inputs of less-degraded, discrete organic matter at high suspended sediment loads, while the source of POC seemed stochastic at low suspended sediment concentrations. The debris flow in 2005 mobilized a large amount of POC, resulting in an export of lignin within a single day equivalent to a normal year. In comparison, the 2008 Wenchuan earthquake increased the flux of POC and particulate lignin, albeit with limited impact on POC sources in comparison to seasonal variations. Our results highlight the important role of episodic events in the fluvial export of terrestrial carbon. |
| WOS关键词 | TRIGGERED LANDSLIDES ; LIGNIN DEGRADATION ; SEDIMENT ; RIVER ; MATTER ; EROSION ; DRIVEN ; FLUXES ; MOUNTAINS ; BIOSPHERE |
| 语种 | 英语 |
| WOS记录号 | WOS:000936620700001 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/40079]  |
| 专题 | 个人在本单位外知识产出 |
| 通讯作者 | Feng Xiaojuan; Jin Zhangdong |
| 作者单位 | 1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, China 2.State Key Laboratory of Grassland and Agro-ecosystems, and College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China 3.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, China 4.Department of Earth Sciences, University of Oxford, Oxford, United Kingdom 5.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, China |
| 推荐引用方式 GB/T 7714 | Wang Jin,Ma Tian,Zhang Fei,et al. The role of earthquakes and storms in the fluvial export of terrestrial organic carbon along the eastern margin of the Tibetan plateau: A biomarker perspective[J]. Frontiers in Earth Science,2023,10:1090983. |
| APA | Wang Jin,Ma Tian,Zhang Fei,Hilton Robert G.,Feng Xiaojuan,&Jin Zhangdong.(2023).The role of earthquakes and storms in the fluvial export of terrestrial organic carbon along the eastern margin of the Tibetan plateau: A biomarker perspective.Frontiers in Earth Science,10,1090983. |
| MLA | Wang Jin,et al."The role of earthquakes and storms in the fluvial export of terrestrial organic carbon along the eastern margin of the Tibetan plateau: A biomarker perspective".Frontiers in Earth Science 10(2023):1090983. |
入库方式： OAI收割
来源：烟台海岸带研究所
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