Sources and preservation of organic matter in recent sediment from the Changjiang (Yangtze River) Estuary, China


  • Lü Xiaoxia College of Marine Geo-science, Ocean University of China
  • Shikui Zhai College of Marine Geo-science, Ocean University of China
  • Lifeng Niu The Normal College, Qingdao University, Qingdao, Shandong Province.



bulk parameter, molecular characterization, sediment, hydrocarbon, the Changjiang Estuary


The vertical distributions of bulk and molecular biomarker compositions in the samples from four sediment cores of the Changjiang (Yangtze River) Estuary were determined. The changes in the bulk and molecular compositions with depth suggest that there have been recent changes in the marine autogenic and terrigenous supply. In the site at the boundary of the turbidity maximum (Site 8) and the most southern site (Site 26), the autogenic and allochthonous inputs make almost the same contribution to sedimentary organic matter. In the site close to the river mouth (Site 11), the organic matter mainly comes from the terrestrial input carried by the Changjiang water, whereas, in the most eastern site (Site 17), the organic matter consists of a mixture of recent and ancient Changjiang delta sedimentary residues. Significant downcore fluctuations were observed in the patterns of the bulk and molecular compositions, as well as in several biomarker ratios, which also indicates the different anoxic conditions at different depths of the core besides the source variation. In addition, the distributions of molecular compounds show that the organic matter is a mixture of immature and mature in the sediments of the four cores, which further indicates that the microbial activity is active in anoxic conditions, especially in the surface sediment. The vertical distributions of molecular compounds also show that the autogenic marine organic matter is more easily degraded, and that the molecular compounds evolve from unstable steric configurations to stable ones in the early diagenetic processes.


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Brassell, S.C. – 1993. Applications of biomarkers for delineating marine paleoclimatic fluctuations during the Pleistocene. In: M.H. Engel and S.A. Macko (eds.), Organic Geochemistry, pp. 699-738. Principles and Applications. Plenum, New York.

Canuel, E.A., K.H. Freeman and S.G. Wakeham. – 1997. Isotopic composition of lipid biomarker compounds in estuarine plants and surface sediments. Limnol. Oceanogr., 42: 1570-1583.

Chen, J.Y., H.T. Shen, and C.X.Yu. – 1988. Processes of Dynamics and Geomorphology of the Changjiang Estuary. Shanghai Scientific and Technological Publisher, Shanghai, pp. 454. (in Chinese with English abstract).

Chen, Q., S. Zhang, R. Huang and B. Chen. – 2002. Distribution of chemical substances in the low-salinity reach of Changjiang Estuary. Mar. Environ. Sci., 21: 29-33. (in Chinese with English abstract)

Cranwell, P.A., G. Eglinton and N. Robinson. – 1987. Lipids of aquatic organisms as potential contributors to lacustrine sediments-II. Org. Geochem., 11: 513-527. doi:10.1016/0146-6380(87)90007-6

Didyk, B.M., B.R.T. Simoneit, S.C. Brassell and G. Eglinton. – 1978. Organic geochemical indicators of paleoenvironmental conditions of sedimentation. Nature, 272: 216-222. doi:10.1038/272216a0

Duan, Y. – 2000. Organic geochemistry of recent marine sediments from the Nansha Sea, China. Org. Geochem., 31: 159-167. doi:10.1016/S0146-6380(99)00135-7

Duan, Y., B. Luo, Y. Xu and L.Ma. – 1996. Composition and geochemical significance of biomarkers in marine sediments from Nansha Islands waters, the South China Sea. Chin. J. Oceanol. Limnol., 27: 258-263. (in Chinese with English abstract)

Eisma, D. – 1998. Intertidal Deposits: River Mouths, Tidal Flats and Coastal Lagoons. CRC Press, Boca Raton, Florida.

Freudenthal, T., T. Wagner, F. Wenzhöfer, M. Zabel and G. Wefer. –2001. Early diagenesis of organic matter from sediments of the eastern subtropical Atlantic: Evidence from stable nitrogen and carbon isotopes. Geochim. Cosmochim. Acta, 65: 1795-1808. doi:10.1016/S0016-7037(01)00554-3

Gagosian, R.B., J.K. Volkman and G.E. Nigrelli. – 1983. The use of sediment traps to determine sterol sources in coastal sediments off Peru. In: M. Bjorøy et al. (eds.), Advances in Organic Geochemistry, pp. 369-379. Wiley, Chichester.

González-Vila, F.J., O. Polvillo, T. Boski, D. Moura and de J.R. Andrés. – 2003. Biomarker patterns in a time-resolved Holocene/terminal Pleistocene sedimentary sequence from the Guadiana river estuarine area (SW Portugal/Spain border). Org. Geochem., 34: 1601-1613. doi:10.1016/j.orggeochem.2003.08.006

Grimal, J. and J. Albaigés. – 1987. Sources and occurrence of C12- C22 n-alkane distributions with even carbon-number preference in sedimentary environments. Geochim. Cosmochim. Acta, 55: 1379-1384. doi:10.1016/0016-7037(87)90322-X

Harada, N., N. Handa, M. Fukuchi and R. Ishiwatari. – 1995. Source of hydrocarbons in marine sediments in Lützow-Holm Bay, Antarctica. Org. Geochem., 23: 229-237. doi:10.1016/0146-6380(94)00124-J

Haven, ten H.L., de J.W. Leeuw, J. Rullkötter and J.S. Sinninghe- Damsté. – 1987. Restricted utility of the pristine/phytane ratio as a paleoenvironmental indicator. Nature, 330: 641-643.

Hedges, J.I. and R.G. Keil. – 1995. Sedimentary organic matter preservation: an assessment and speculative synthesis. Mar, Chem., 49: 81-115. doi:10.1016/0304-4203(95)00008-F

Hedges, J.I. and R.G. Keil. – 1999. Organic geochemical perspectives on estuarine processes: sorption reaction and consequences. Mar. Chem., 65: 55-65. doi:10.1016/S0304-4203(99)00010-9

Jaffé, R., G.A. Wolff, A.C. Cabrera and H. Carvajal-Chitty. – 1995. The biogeochemistry of lipids in rivers from the Orinoco Basin. Geochim. Cosmochim. Acta, 59: 4507-4522. doi:10.1016/0016-7037(95)00246-V

Jin, X. – 1992. Marine Geology of the East China Sea. pp. 185-219. China Ocean Press, Beijing, China.

Lehmann, M.F., S.M. Bernasconi, A. Barbieri and J.A. McKenzie. 2002. Preservation of organic matter and alteration of its carbon and nitrogen isotope composition during simulated and in situ early sedimentary diagenesis. Geochim. Cosmochim. Acta, 66: 3573-3584. doi:10.1016/S0016-7037(02)00968-7

Li, M., S.R. Larter, P. Taylor, D.M. Jones, B. Bowler and M. Bjoroy. 1995. Biomarkers or not biomarkers? A new hypothesis for the origin of pristine involving derivation from methyltrimethyltridecylchromans (MTTCs) formed during diagenesis from chlorophyll and alkylphenols. Org. Geochem., 23: 159-167. doi:10.1016/0146-6380(94)00112-E

Logan, G.A. and G. Eglinton. – 1994. Biogeochemistry of the Miocene lacustrine deposit at Clarkia, northern Idaho, USA. Org. Geochem., 21: 857-870. doi:10.1016/0146-6380(94)90045-0

Lü, X, J. Song, X. Li, H. Yuan, T. Zhan, N. Li and X. Gao. – 2005. Geochemical characteristics of nitrogen in the southern Yellow Sea surface sediments, J. Mar. Syst., 56: 17-27. doi:10.1016/j.jmarsys.2004.06.009

Lü, X. and J. Song. – 2004. The effect of circumstance on the formation and release of transferable nitrogen in different grain size surface sediments of the southern Yellow Sea. Environ. Chem., 23: 314-320. (in Chinese with English abstract).

Lü, X and S. Zhai. – 2005. Sources and transport of hydrocarbons in sediments from the Changjiang River Estuary, China. Mar. Pollut. Bull., 50: 1738-1744. doi:10.1016/j.marpolbul.2005.09.043 PMid:16271730

Mackenzie, A.S., R.L. Patience, J.R. Maxwell, M. Vandenbroucke and B. Durand. – 1980. Molecular parameters of maturation in the Toacian shales, Paris Basin, France. I. Changes in the configurations of acyclic isoprenoid alkanes, steranes and triterpanes. Geochim. Cosmochim. Acta, 44: 1709-1721. doi:10.1016/0016-7037(80)90222-7

Mangelsdorf, K. and J. Rullkötter. – 2003. Natural supply of oilderived hydrocarbons into marine sediments along the California continental margin during the late Quaternary. Org. Geochem., 34: 1145-1159. doi:10.1016/S0146-6380(03)00059-7

Mannio, A. and H.R. Harvey. – 1999. Lipid composition in particulate and dissolved organic matter in the Delaware Estuary: Sources and diagenetic patterns. Geochim. Cosmochim. Acta, 63: 2219-2235. doi:10.1016/S0016-7037(99)00128-3

Medeiros P.M. and M.C. Bícego. – 2004. Investigation of natural and anthropogenic hydrocarbon inputs in sediments using geochemical markers. I. Santos, SP-Brazil. Mar. Poll. Bull., 49: 761-769. doi:10.1016/j.marpolbul.2004.06.001 PMid:15530519

Medeiros, P.M., M.C. Bícego, R.M. Castelao, C.D. Rosso, G. Fillmann and A.J. Zamboni. – 2005. Natural and anthropogenic hydrocarbon inputs to sediments of Patos Lagoon Estuary, Brazil. Environ. Int., 31: 77-87. doi:10.1016/j.envint.2004.07.001 PMid:15607781

Meyers, P.A. – 1994. Preservation of elemental and isotopic source identification of sedimentary organic matter. Chem. Geol., 144: 289-302. doi:10.1016/0009-2541(94)90059-0

Meyers, P.A. – 1997. Organic geochemical proxies of paleoceanographic, paleolimnologic and paleoclimatic processes. Org. Geochem., 27: 213-250. doi:10.1016/S0146-6380(97)00049-1

Meyers, P.A. and R. Ishiwatari. – 1993. Lacustrine organic geochemistry- an overview of indicateors of organic matter sources and diagenesis in lake sediments. Org. Geochem., 20: 867-900. doi:10.1016/0146-6380(93)90100-P

Müller, P.J. – 1977. C/N ratios in Pacific deep-sea sediments: Effect of inorganic ammonium and organic nitrogen compounds sorbed by clays. Geochim. Cosmochim. Acta, 41: 765-776. doi:10.1016/0016-7037(77)90047-3

Muri, G., S.G. Wakeham, T.K. Pease and J. Faganeli. – 2004. Evalution of lipid biomarkers as indicators of changes in organic matter delivery to sediments from Lake Planina, a remote mountain lake in NW Slovenia. Org. Geochem., 35: 1083-1093. doi:10.1016/j.orggeochem.2004.06.004

Nichols, P.D., A.C. Palmisano, M.S. Rayner, G.A. Smith and D.C. Vhite. – 1990. Occurrence of novel C30sterols in Antarctic seaice diatom communities during a spring bloom. Org. Geochem., 15: 503-508. doi:10.1016/0146-6380(90)90096-I

Nieuwenhuize, J., Y.E.M. Maas and J.J. Middelburg. – 1994. Rapid analysis of organic carbon and nitrogen in particulate materials. Mar. Chem., 45: 217-224. doi:10.1016/0304-4203(94)90005-1

Peters, K.E. and J.M. Moldowan. – 1993. The Biomarker Guide. Interpreting Molecular Fossils in Petroleum and Acient Sediments. pp. 363. Prentice Hall, Englewood Cliffs, NJ.

Rieley, G., R.J. Collier, D.M. Jones and G. Eglinton. – 1991. The biogeochemistry of Ellesmere Lake, U.K.- I. Source correlation of leaf wax inputs to the sedimentary lipid record. Org. Geochem., 17: 901-912. doi:10.1016/0146-6380(91)90031-E

Rullkötter, J., P. Sundararaman, M. Radke and R.G. Sckaefer. – 2000. Maturity assement of Monterey crude oils using biological marker parameters. In: Isaacs C.M. and J. Rullkötter (eds.), The Monterey Formation-From Rocks to Molecules. pp. 329-347. Columbia University Press, USA.

Seifert, W.K. and J. Moldowan. – 1980. The effect of thermal stress on source rock quality as measured by hopane stereochemistry. In: Douglas A.G. and J.R. Maxwell (eds.), Advances in Organic Geochemistry 1979. pp. 229-237. Pergamon Press, Oxford.

Steinhauer, M.S., Boehm P.D. (1992) The composition and distribution of saturated and aromatic hydrocarbons in nearshore sediments, river sediments, and coastal peat of Alaskan Beaufort Sea: implications for detecting anthropogenic hydrocarbon inputs. Mar. Environ. Res., 33: 223-253. doi:10.1016/0141-1136(92)90140-H

The Specification for Marine Monitoring (HY003.1-91~HY/T 003.10-91) -1991. Pp. 397-399. Beijing, China Ocean Press (in Chinese).

Twichell, A.C., P.A. Meyers and L. Diester-Haass. – 2002. Significance of high C/N ratios in organic-carbon- rich Neogene sediments under the Benguela Current upwelling system. Org. Geochem., 33: 715-722. doi:10.1016/S0146-6380(02)00042-6

Verardo, D.J. and A. McIntyre. – 1994. Production and preservation: control of biogenous sedimentation in the tropical Atlantic 0-300000 years B.P. Paleoceanogr., 9: 63-86. doi:10.1029/93PA02901

Volkman, J.K. – 1986. A review of sterol markers for marine and terrigenous organic matter. Org. Geochem., 9: 83-99. doi:10.1016/0146-6380(86)90089-6

Volkman, J.K. and J.R. Maxwell. – 1986. Acyclic isoprenoids as biological markers. In: Johns, R.B. (ed.), Biological Markers in the Sedimentary Record. pp. 1-42. Elsevier, Amsterdam,

Volkman, J.K., P. Kearney and S.W. Jeffrey. – 1990. A new source of 4-methyl sterols and 5〈(H)-stanols in sediments: Prymnesiophyte microalgae of the genus Pavlova. Org. Geochem., 15: 489-497. doi:10.1016/0146-6380(90)90094-G

Volkman, J.K., S.M. Barret and S.I. Blackburn. – 1999. Eustigmatophyte microalgae are potential sources of C29 sterols, C22-C28 n-alcohols and C28-C32 n-alkyl diols in freshwater environments. Org. Geochem., 30: 307-318. doi:10.1016/S0146-6380(99)00009-1

Wang, B., R. Zhan and J. Zang. – 2002. Distributions and transportation of nutrients in Changjiang River Estuary and its adjacent sea area. Acta Oceanol. Sinica, 24: 53-58. (in Chinese with English abstract)

Zhao, B.G., Ren, D. Cao and Y. Yang. – 2001. Characteristics of the ecological environment in upwelling area adjacent to the Changjiang River Estuary. Chinese J. Oceanol. Limnol., 32: 327-333. (in Chinese with English abstract).




How to Cite

Xiaoxia L, Zhai S, Niu L. Sources and preservation of organic matter in recent sediment from the Changjiang (Yangtze River) Estuary, China. scimar [Internet]. 2006Mar.30 [cited 2023Jun.10];70(1):47-58. Available from:




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