赤道东北太平洋沉积物间隙水中溶解有机碳的分布特征

倪建宇; MAGGIULLIMichael

赤道东北太平洋沉积物间隙水中溶解有机碳的分布特征

倪建宇¹,
MAGGIULLIMichael²

1.
国家海洋局, 第二海洋研究所, 国家海洋局海底科学重点实验室, 浙江, 杭州, 310012
2.
柏林工业大学, 环境工程研究所, 德国, 柏林, D-10623

基金项目: 国家自然科学青年基金项目(40206012);大洋矿产资源勘探开发专项基金项目(Dy105-02-01)资助

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出版历程
- 收稿日期: 2006-03-30
- 修回日期: 2006-12-18

Dissolved organic carbon in sediments from the equatorial northeastern Pacific

NI Jian-yu¹,
MAGGIULLI Michael²

1.
Key Laboratoryof Submarine Geosciences of State Oceanic Administration, Hangzhou 310012, China
2.
Institute of Environmental Technology, Technical University of Berlin, Berlin D-10623, Germany

摘要

摘要: 沉积物间隙水中的溶解有机碳(DOC)是沉积物有机质矿化过程中的中间产物^[1],沉积物中的有机质通过微生物水解和(厌氧)发酵等方式溶解成各类具有不同分子量的有机化合物,通常总称为溶解有机碳,并释放到沉积物间隙水中.而溶解有机碳又进一步被细菌等微生物所利用,最终被氧化为溶解无机碳,完成有机质的矿化过程.因此,沉积物间隙水中DOC的浓度是消耗和生成之间平衡的结果^[1].已有的研究表明,沉积物间隙水中DOC的含量显著高于底层水体中DOC的含量,导致其向底层水体的扩散;近期的研究也表明,来自海底沉积物的DOC通量是底层水体中DOC的重要来源,是海洋有机碳储库中的重要组成之一^[2~4].
- 溶解有机碳 /
- 间隙水 /
- 海底扩散通量 /
- 赤道东北太平洋
- DOC /
- porewater /
- diffusive benthic flux /
- equatorial northeastern pacific

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参考文献(14)

ALPERIN M J,ALBERT D B,MARTENS C S.Seasonal variations in production and consumption rates of dissolved organic carbon in an organic-rich coastal sediment[J].Geochim Cosmochim Acta,1994,58:4 909-4 930.

BURDIGE D J,ALPERIN M J,HOMSTEAD J,et al.The role of benthic fluxes of dissolved organic carbon in oceanic and sedimentary carbon cycling[J].Geophysical Research Letters,1992,19(18):1 851-1 854.

BURDIGE D J,BERELSON W M,COALE K H et al.Fluxes of dissolved organic carbon from California continental margin sediments[J].Geochimica Cosmochimica Acta,1999,63(10):1 507-1 515.

ALPERIN M J,MARTENS C S,ALBERT D B,et al.Benthic fluxes and porewater concentration profiles of dissolved organic carbon in sediments from the North Carolina continental slope[J].Geochimica Cosmochimica Acta,1999,63(3/4):427-448.

倪建宇,周怀阳,潘建明,等.中国多金属结核开辟区沉积物地球化学特征[J].海洋学报,2001,23(6):94-100.

OTTO S,BALZER W.Release of dissolved organic carbon(DOC)from sediments of the NW European Continental Margin(Goban Spur)and its significance for benthic carbon cycling[J].Prog Oceanogr,1998,42:127-144.

PAPADIMITRIOU S,KENNEDY H,BENTALEB I,et al.Dissolved organic carbon in sediments from the eastern North Atlantic[J].Marine Chemistry,2002,79:37-47.

BERNER R A.Early diagenesis:a theoretical approach[M].Princeton,NJ:Princeton University Press,1980.241.

MCMANUS J,BERELSON W M,HAMMOND D E,et al.Early diagenesis of biogenic opal:Dissolution rates,kinetics,and paleoceanographic implications[J].Deep-Sea Res(Ⅱ),1995,42(2-3):871-903.

BURDIGE D J,GARDNER K G.Molecular weight distribution of dissolved organic carbon in marine sediment pore waters[J].Marine Chemistry,1998,62:45-64.

SCHULZ H D.Quantification of early diagenesis:Dissolved constituents in marine pore water[A].SCHULZ H D,ZABEL M.Marine Geochemistry[M].Berlin:Springer-Verlag,2000.85-128.

倪建宇,MICHAEL M,刘小涯,等.赤道东北太平洋表层沉积物间隙水中营养盐的剖面分布及其海底扩散通量[J].地球化学,2005,34(6):587-594.

MIDDELBURG J J,SOETAERT K,HERMAN P M J.Empirical relationships for use in global diagenetic models[J].Deep-Sea Res(I),1997,44(2):327-344.

MARTIN W R,McCORKLE D C.Dissolved organic carbon concentrations in marine pore waters determined by high-temperature oxidation[J].Limnol &Oceanogr,1993,38:1 464-1 479.

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