南极普里兹湾沉积物中有机碳和总氮的含量与分布

刘瑞娟; 于培松; 扈传昱; 韩正兵; 潘建明

doi:10.3969/j.issn.0253-4193.2014.04.003

南极普里兹湾沉积物中有机碳和总氮的含量与分布

doi: 10.3969/j.issn.0253-4193.2014.04.003

Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China

基金项目: 国家自然基金项目（41006118，41076134）；南北极环境综合考察与评估专项（CHINARE2012-04-04）。

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出版历程
- 收稿日期: 2013-02-23
- 修回日期: 2013-06-25

Contents and distributions of organic carbon and total nitrogen in sediments of Prydz Bay, Antarctic

Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China

摘要

摘要: 利用中国多次南极科学考察获得的沉积物样品，对普里兹湾沉积物中有机碳（OC）、总氮（TN）的含量和分布以及OC/TN进行了分析。结果表明:普里兹湾表层沉积物中OC和TN的含量变化范围分别为0.14%~1.20%和0.02%~0.20%，平均值分别为0.63%和0.11%。OC/TN的变化范围为5.5~8.2，平均值为6.8。OC和TN含量呈现明显的正相关性，表明有机质来源相同，比值接近6.6，说明有机质主要为海洋生源沉积。两者平面分布趋势非常一致，且与沉积物中泥质含量呈显著正相关，湾内73°E以西区域OC和TN含量较低，而以东区域含量较高，这是上层水体生产过程和冰川携带陆源砂等因素共同作用的结果。垂直分布上，OC和TN含量总体上表层高于深层，OC含量随深度增加逐渐降低，达到一定深度后趋于稳定。较高的沉积速率加速OC的埋藏，5根柱样中OC的埋藏率为39%~91%，平均为66%，表明普里兹湾是重要的碳汇区。
- 碳氮比 /
- 碳埋藏 /
- 碳循环 /
- 生物地球化学
Abstract: The organic carbon (OC), total nitrogen (TN) and OC/TN were analyzed in sediments from Prydz Bay (Antarctic) during the CHINARE-18/21/24/25/27 cruises. The results show that the contents of OC and TN were 0.14% to 1.20% and 0.02% to 0.20%, respectively, with averages of 0.63% and 0.11%. OC/TN ranges from 5.5 to 8.2 and 6.8 on average. The obvious positive correlation between OC and TN indicates that organic matters come from same source. OC/TN, approaching to 6.6, reveals the organism is mainly from marine biogenic matter. OC and TN show same distribution tendency and positive correlation with content of mud in sediments, and which both lower in the west of 73°E, but higher in the east, even with the highest value in the southeast of Prydz Bay. This pattern was controlled by primary production in upper water and terrigenous sand carried by glacier. The contents of OC and TN in surface sediments are higher than those in deep layers, and the former decreases with depth of core to a constant value. Higher sedimentation rates can accelerate carbon burial rate. The burial efficiency of OC ranges from 39% to 91%, averagely 66%, indicating Prydz Bay is an important carbon sink area.
- OC/TN /
- carbon burial /
- carbon cycle /
- biogeochemistry

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参考文献(28)

IPCC,2007. 气候变化2007:综合报告 . 日内瓦:政府间气候变化专门委员会出版,2008.

高众勇,陈立奇,王伟强. 南大洋二氧化碳源汇分布及其海-气通量研究[J]. 极地研究,2001,13(3):175-186.

Metzl N,Poisson A,Louanchi F,et al. Spatio-temporal distributions of air-sea fluxes of CO₂ in the Indian and Antarctic oceans[J]. Tellus,1995,47(B):56-69.

Tans P P,Fung I Y,Takahashhi T. Observational constraints on the global atmospheric carbon dioxide budget[J]. Science,1990,247:1431-1438.

Philip A M. Organic geochemical proxies of paleoceanographic,paleolimnologic,and paleoclimatic process[J].Organic Geochemistry,1997,27(5/6):213-250.

于培松,张海生,扈传昱,等. 利用沉积生物标志物分析南极普里兹湾浮游植物群落结构变化[J]. 极地研究,2012,24(2): 143-150.

蔡昱明,宁修仁,朱根海,等. 南极普里兹湾浮游植物现存量与初级生产力粒级结构和新生产力研究[J]. 海洋学报,2005,27(4):135-145.

扈传昱,姚梅,于培松,等. 南大洋普里兹湾沉积物中生物硅的含量与分布[J]. 海洋学报,2007,29(5):48-54.

于培松,扈传昱,朱小萤,等. 南极普里兹湾沉积物中的糖类分布及意义[J]. 海洋学报,2008,30(1):59-66.

董兆乾,内维尔·史密斯,诺尔斯·克里,等. 南极普里兹湾海域夏季的水团和环流[C]// 南极科学考察论文集.第二集. 北京:海洋出版社,1984:1-24.

严金辉,李锐祥,侍茂崇,等. 2011年1月普里兹湾埃默里冰架附近水文特征[J]. 极地研究,2012,24(2):102-109.

郑少军,史久新. 南极普里兹湾邻近海域海冰生消发展特征分析[J]. 中国海洋大学学报,2011,41(7/8):009-016.

Yoshikazu Sampei,Eiji Matsumoto. C/N ratios in a sediment core from Nakaumi Lagoon,southwest Japan-usefulness as an organic source indicator [J]. Geochemical Journal,2001,35:189-205.

高学鲁,陈绍勇,马福俊,等. 南沙群岛西部海域两柱状沉积物中碳和氮的分布和来源特征及埋藏通量估算[J]. 热带海洋学报,2008,27(3):38-44.

扈传昱,潘建明,张海生,等. 南极普里兹湾外海沉降颗粒物通量、组成变化及其与罗斯海对比研究[J]. 海洋学报,2006,28(5):49-55.

张海生,扈传昱,潘建明,等. 南极普里兹湾北部深海沉降颗粒物通量的季节性变化[J]. 地球化学,2003,32 (4):358-362.

Isla E,Masque P,Palanques A,et al. Sediment accumulation rates and carbon burial in the bottom sediment in a high-producitivity area: Gerlache Strait(Antarctica)[J]. Deep-Sea Research II,2002,49:3275-3287.

Pere Masque,Enrique Isla,Joan A,et al. Sediment accumulation rates and carbon fluxes to bottom sediments at the Western Bransfield Strait(Antarctica)[J].Deep-Sea Research II,2002,49:921-933.

David J D,Olivier R. Preservation efficiencies and accumulation rates for biogenic silica and organic C,N and P in high-latitude sediments: The Ross Sea[J]. Journal of Geophysical Research,1996,101:18501-18518.

Chen M T,Shian L J,Yu P S,et al. 500 000-year records of carbonate,organic carbon,and foraminiferal sea-surface temperature from the southeastern South China Sea(near Palawan Island)[J]. Palaeogeography,Palaeoclimatology,Palaeoecology,2003,197:113-131.

刘子琳,蔡昱明,陈中元,等. 1998-1999年南极普里兹湾及北部海区叶绿素a和初级生产力的分布特征[J].极地研究,2002,14(1):12-21.

刘子琳,宁修仁,蔡昱明,等. 1999-2000年夏季南极普里兹湾及湾口区叶绿素a和初级生产力[J]. 极地研究,2000,12(4):235-244.

邱雨生,黄奕普,刘广山,等. 南极普里兹湾及邻近海域初级生产力的时空变异[J]. 厦门大学学报(自然科学版),2004,43(5):676-681.

刘诚刚,宁修仁,孙军,等. 2002年夏季南极普里兹湾及其邻近海域浮游植物现存量、初级生产力粒级结构和新生产力研究[J]. 海洋学报,2004,26(6):107-117.

Treguer P. Silica and the cycle of carbon in the ocean[J]. Comptes Rendus Geoscience,2002,334:3-11.

扈传昱,韩正兵,薛斌,等. 2011年夏季南大洋普里兹湾颗粒态生物硅的分布与变化特征[J]. 极地研究,2012,24(3):247-253.

乐肯堂,史久新. 南极普里兹湾区环流与混合的研究[J]. 海洋科学集刊,1997,38:39-51.

于培松,扈传昱,刘小涯,等. 南极普里兹湾海域的近现代沉积速率[J]. 2009,27(6):1172-1177.

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