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环渤海地区河流河口及海洋表层沉积物有机质特征和来源

文献类型：期刊论文

作者王润梅; 唐建辉; 黄国培; 陈颖军; 田崇国; 潘晓辉; 骆永明; 李军; 张干
刊名海洋与湖沼
出版日期2015-05-15
卷号46期号:3页码:497-507
关键词总有机碳(TOC) 总氮(TN) 有机碳同位素(δ13C) 氮同位素(δ15N) 环渤海地区
ISSN号0029-814X
其他题名PROVENANCE OF ORGANIC MATTER IN ESTUARINE AND MARINE SURFACE SEDIMENTS AROUND THE BOHAI SEA
产权排序中国科学院烟台海岸带研究所海岸带环境过程与生态修复重点实验室;中国科学院大学;中国科学院广州地球化学研究所有机地球化学国家重点实验室;
中文摘要2013年8月采集了环渤海地区35条主要河流河口表层沉积物样品,12月采集了渤海与北黄海24个表层沉积物样品,分析了其生物地球化学指标:总有机碳(TOC)、总氮(TN)、有机碳同位素(δ13C)和氮同位素(δ15N),探讨该区域表层沉积物有机质特征及组成。研究表明:河流河口表层沉积物有机碳同位素(δ13C)值在–26.4‰—–21.8‰,平均值为–24.5‰;渤海表层沉积物有机碳同位素(δ13C)值在–23.8‰—–21.7‰,平均值为–22.3‰。河口表层沉积物TOC含量在0.06%—3.87%,平均值为1.31%;渤海表层沉积物TOC含量在0.52%—2.09%,平均值为1.08%。河流δ...
英文摘要Thirty-five samples of estuarine surface sediments were collected in major feeding rivers of the Bohai Sea in August 2013, and 24 marine surface sediments were sampled in the Bohai Sea and the north Yellow Sea in December 2013. Total organic carbon(TOC), total nitrogen(TN), organic carbon isotope(δ13C) and nitrogen isotope(δ15N) were investigated to trace the organic matter sources. The results show that δ13C values in the estuarine surface sediments ranged from –26.4‰ to –21.8‰ in average of –24.5‰ and those in marine surface sediments were from –23.8‰ to –21.7‰ in average of –22.3‰. TOC in the estuarine surface sediments ranged 0.04%—3.70% in average of 1.24% and TOC in the marine surface sediments ranged from 0.49% to 2.01% in average of 1.03%. The values of δ13C in the estuarine surface sediments were smaller and originated mainly from continental shelf, while those in the marine surface sediments were greater and originated mainly from aquatic sources of organic matter. The range of δ13C varied largely among rivers with a 4.6‰ difference between the maximum and minimum. However, it varied very little among rivers which are geographically close. The δ15N values in the estuarine surface sediments ranged from 1.5‰ to 10.2‰ in average of 5.5‰ and those in marine surface sediments ranged from 4.4‰ to 5.6‰ in average of 5.0‰. Compared to marine surface sediments, the range of δ15N values in the estuarine surface sediments was wider, which may reflect complex origin of terrestrial organic matter. Values of δ15N in marine surface sediments were relatively uniform, indicating that the original δ15N source signature might have been lost or overprinted in biochemical alteration. The δ13C—δ15N relationship implies the mixing sources of terrestrial and aquatic organic matter. Using the classic binary mode, the proportion of terrestrial organic matter ranged from 10% to 90% in average of 60% for the 35 rivers, and from 10% to 50% in average of 20% for the Bohai Sea. Organic matters in the surface sediments of 35 rivers were originated mainly from terrestrial organic matter, while those in the surface sediments of the Bohai Sea came mainly from marine planktonic microalgae. Terrestrial input originated from rivers was also an important source. To be clear, stable organic carbon and nitrogen isotopes and elemental Corg/Ntotal ratios could provide limited information on the source because the original source signature may be lost or overprinted by biochemical alteration.
收录类别CSCD
语种中文
CSCD记录号CSCD:5458979
源URL[http://ir.yic.ac.cn/handle/133337/17361]  
专题烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
作者单位1.中国科学院烟台海岸带研究所海岸带环境过程与生态修复重点实验室
2.中国科学院大学
3.中国科学院广州地球化学研究所有机地球化学国家重点实验室
推荐引用方式
GB/T 7714		 王润梅,唐建辉,黄国培,等. 环渤海地区河流河口及海洋表层沉积物有机质特征和来源[J]. 海洋与湖沼,2015,46(3):497-507.
APA 王润梅.,唐建辉.,黄国培.,陈颖军.,田崇国.,...&张干.(2015).环渤海地区河流河口及海洋表层沉积物有机质特征和来源.海洋与湖沼,46(3),497-507.
MLA 王润梅,et al."环渤海地区河流河口及海洋表层沉积物有机质特征和来源".海洋与湖沼 46.3(2015):497-507.

入库方式： OAI收割

来源：烟台海岸带研究所

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