Source and composition of sedimentary organic matter in the head of Three Gorges Reservoir: a multiproxy approach using δ13C, lignin phenols, and lipid biomarker analyses

被引：10

作者：

Ding H. ^{[1
]}

Zhu C. ^{[1
]}

Zhang K. ^{[1
]}

Xiao S. ^{[2
]}

Cui X. ^{[3
]}

Sun Y. ^{[1
]}

机构：

[1] Institute of Environment and Biogeochemistry (eBig), School of Earth Science, Zhejiang University, Hangzhou

[2] College of Hydraulic and Environmental Engineering, China Three Gorges University, Yichang

[3] Department of Earth, Atmospheric and Planetary Science, Massachusetts Institute of Technology, Cambridge, 02139, MA

来源：

Acta Geochimica | 2017年 / 36卷 / 03期

关键词：

Lignin phenols; Lipid biomarkers; Sedimentary organic matter; Three Gorges reservior; δ[!sup]13[!/sup]C;

D O I：

10.1007/s11631-017-0189-8

中图分类号：

学科分类号：

摘要：

A multiproxy approach including bulk organic carbon, δ13C, lignin phenols, and lipid biomarker analyses were applied to characterize the source and composition of sedimentary organic matter in the head part of Three Gorges Reservoir. OM consisted of both natural (autochthonous and allochthonous) and anthropogenic inputs. The natural OM included input from vascular plants, especially non-woody angiosperms. The allochthonous input included plankton and microbial production, likely due to localized eutrophication. Anthropogenic inputs likely derived from petroleum input and/or urban activities. Other anthropogenic inputs were untreated sewage waste. These influences were concluded to be regionally specific point sources of pollution based on relative distributions and on the fact that molecular characteristics of sedimentary OM were not distributed smoothly along a gradient. © 2017, Science Press, Institute of Geochemistry, CAS and Springer-Verlag GmbH Germany.

引用

页码：452 / 455

页数：3

共 14 条

[1]

Bull I.D., Lockheart M.J., Elhmmali M.M., Roberts D.J., Evershed R.P., The origin of faeces by means of biomarker detection, Environ Int, 27, pp. 647-654, (2002)

[2]

Cui X., Bianchi T.S., Savage C., Erosion of modern terrestrial organic matter as a major component of sediments in fjords, Geophys Res Lett, 44, pp. 1457-1465, (2017)

[3]

He D., Mead R.N., Belicka L., Pisani O., Jaffe R., Assessing source contributions to particulate organic matter in a subtropical estuary: a biomarker approach, Org Geochem, 75, pp. 129-139, (2014)

[4]

He D., Simoneit B.R., Jara B., Jaffe R., Compositions and isotopic differences of iso-and anteiso-alkanes in black mangroves (Avicennia germinans) across a salinity gradient in a subtropical estuary, Environ Chem, 13, pp. 623-630, (2015)

[5]

He D., Simoneit B.R., Jara B., Jaffe R., Occurrence and distribution of monomethylalkanes in the freshwater wetland ecosystem of the Florida Everglades, Chemosphere, 119, pp. 258-266, (2015)

[6]

He D., Simoneit B.R., Xu Y., Jaffe R., Occurrence of unsaturated C25 highly branched isoprenoids (HBIs) in a freshwater wetland, Org Geochem, 93, pp. 59-67, (2016)

[7]

Hernandez-Sanchez M.T., Homoky W.B., Pancost R.D., Occurrence of 1-O-monoalkyl glycerol ether lipids in ocean waters and sediments, Org Geochem, 66, pp. 1-13, (2014)

[8]

Medeiros P.M., Simoneit B.R., Multi-biomarker characterization of sedimentary organic carbon in small rivers draining the Northwestern United States, Org Geochem, 39, pp. 52-74, (2008)

[9]

Mendonca R., Kosten S., Sobek S., Cole J.J., Bastos A.C., Albuquerque A.L., Cardoso S.J., Roland F., Carbon sequestration in a large hydroelectric reservoir: an integrative seismic approach, Ecosystems, 17, pp. 430-441, (2014)

[10]

Pisani O., Oros D.R., Oyo-Ita O.E., Ekpo B.O., Jaffe R., Simoneit B.R., Biomarkers in surface sediments from the Cross River and estuary system, SE Nigeria: assessment of organic matter sources of natural and anthropogenic origins, Appl Geochem, 31, pp. 239-250, (2013)

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