Source to sink: Evolution of lignin composition in the Madre de Dios River system with connection to the Amazon basin and offshore
文献类型：期刊论文
| 作者 | Feng, Xiaojuan; Feakins, Sarah J.; Liu, Zongguang; Ponton, Camilo; Wang, Renee Z.; Karkabi, Elias; Galy, Valier6; Berelson, William M.; Nottingham, Andrew T.; Meir, Patrick1,4 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
 |
| 出版日期 | 2016 |
| 卷号 | 121期号:5页码:1316-1338 |
| ISSN号 | 2169-8953 |
| 关键词 | lignin phenols dissolved organic matter (DOM) particulate organic matter (POM) Andes Amazon depth profile |
| DOI | 10.1002/2016JG003323 |
| 文献子类 | Article |
| 英文摘要 | While lignin geochemistry has been extensively investigated in the Amazon River, little is known about lignin distribution and dynamics within deep, stratified river channels or its transformations within soils prior to delivery to rivers. We characterized lignin phenols in soils, river particulate organic matter (POM), and dissolved organic matter (DOM) across a 4 km elevation gradient in the Madre de Dios River system, Peru, as well as in marine sediments to investigate the source-to-sink evolution of lignin. In soils, we found more oxidized lignin in organic horizons relative to mineral horizons. The oxidized lignin signature was maintained during transfer into rivers, and lignin was a relatively constant fraction of bulk organic carbon in soils and riverine POM. Lignin in DOM became increasingly oxidized downstream, indicating active transformation of dissolved lignin during transport, especially in the dry season. In contrast, POM accumulated undegraded lignin downstream during the wet season, suggesting that terrestrial input exceeded in-river degradation. We discovered high concentrations of relatively undegraded lignin in POM at depth in the lower Madre de Dios River in both seasons, revealing a woody undercurrent for its transfer within these deep rivers. Our study of lignin evolution in the soil-river-ocean continuum highlights important seasonal and depth variations of river carbon components and their connection to soil carbon pools, providing new insights into fluvial carbon dynamics associated with the transfer of lignin biomarkers from source to sink. |
| 学科主题 | Environmental Sciences ; Geosciences, Multidisciplinary |
| 电子版国际标准刊号 | 2169-8961 |
| 出版地 | WASHINGTON |
| WOS关键词 | TERRESTRIAL ORGANIC-MATTER ; CONTINENTAL-SHELF SEDIMENTS ; CUO REACTION-PRODUCTS ; LEAF WAX BIOMARKERS ; FAGUS-SYLVATICA L. ; ELEVATION GRADIENT ; PERUVIAN ANDES ; TEMPERATURE SENSITIVITY ; CHEMICAL-COMPOSITION ; OXIDATION-PRODUCTS |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| 出版者 | AMER GEOPHYSICAL UNION |
| WOS记录号 | WOS:000378703200008 |
| 资助机构 | U.S. National Science FoundationNational Science Foundation (NSF) [1227192] ; National Program on Key Basic Research ProjectNational Basic Research Program of China [2015CB954201] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41422304] ; USC ; Natural Environment Research CouncilUK Research & Innovation (UKRI)Natural Environment Research Council (NERC) [NE/F002149/1] ; ARCAustralian Research Council [FT110100457] ; European Union Marie Curie FellowshipEuropean Commission [FP7-2012-329360] ; NSFNational Science Foundation (NSF) [OCE-0934073] ; NERCUK Research & Innovation (UKRI)Natural Environment Research Council (NERC) [NE/F002149/1, NE/H006753/1, NE/G018278/1, NE/J023531/1] Funding Source: UKRI ; Natural Environment Research CouncilUK Research & Innovation (UKRI)Natural Environment Research Council (NERC) [NE/H006753/1, NE/J023531/1, NE/G018278/1] Funding Source: researchfish |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/25118]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 3.Australian Natl Univ, Res Sch Biol, Canberra, ACT, Australia 4.Nottingham, Andrew T.] Smithsonian Trop Res Inst, Balboa, Panama 5.Univ Edinburgh, Sch Geosci, Edinburgh, Midlothian, Scotland 6.Univ So Calif, Dept Earth Sci, Los Angeles, CA 90089 USA |
| 推荐引用方式 GB/T 7714 | Feng, Xiaojuan,Feakins, Sarah J.,Liu, Zongguang,et al. Source to sink: Evolution of lignin composition in the Madre de Dios River system with connection to the Amazon basin and offshore[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2016,121(5):1316-1338. |
| APA | Feng, Xiaojuan.,Feakins, Sarah J..,Liu, Zongguang.,Ponton, Camilo.,Wang, Renee Z..,...&West, A. Joshua.(2016).Source to sink: Evolution of lignin composition in the Madre de Dios River system with connection to the Amazon basin and offshore.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,121(5),1316-1338. |
| MLA | Feng, Xiaojuan,et al."Source to sink: Evolution of lignin composition in the Madre de Dios River system with connection to the Amazon basin and offshore".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 121.5(2016):1316-1338. |
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来源：植物研究所
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