Source to sink: Evolution of lignin composition in the Madre de Dios River system with connection to the Amazon basin and offshore

doi:10.1002/2016JG003323

	Source to sink: Evolution of lignin composition in the Madre de Dios River system with connection to the Amazon basin and offshore
	Feng, Xiaojuan; Feakins, Sarah J.; Liu, Zongguang ; Ponton, Camilo ; Wang, Renee Z.; Karkabi, Elias ; Galy, Valier 2; Berelson, William M.; Nottingham, Andrew T.; Meir, Patrick 3,5; West, A. Joshua
	2016
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
ISSN	2169-8953
卷号	121 期号:5 页码:1316-1338
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.
关键词	lignin phenols dissolved organic matter (DOM) particulate organic matter (POM) Andes Amazon depth profile
学科领域	Environmental Sciences ; Geosciences, Multidisciplinary
DOI	10.1002/2016JG003323
收录类别	SCI
语种	英语
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)
WOS记录号	WOS:000378703200008
出版者	AMER GEOPHYSICAL UNION
文献子类	Article
出版地	WASHINGTON
EISSN	2169-8961
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
作者邮箱	xfeng@ibcas.ac.cn ; feakins@usc.edu
作品OA属性	Green Accepted, Green Published, Bronze
引用统计	被引频次：46[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	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.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 2.Univ So Calif, Dept Earth Sci, Los Angeles, CA 90089 USA 3.Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA 4.Univ Edinburgh, Sch Geosci, Edinburgh, Midlothian, Scotland 5.Nottingham, Andrew T.] Smithsonian Trop Res Inst, Balboa, Panama 6.Australian Natl Univ, Res Sch Biol, Canberra, ACT, Australia
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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