莱州湾-龙口湾表层沉积物有机质特征及来源分析

	莱州湾-龙口湾表层沉积物有机质特征及来源分析
其他题名	Characteristics and sources of organic matter in surface sediments of Laizhou Bay and Longkou Bay
	吕双燕 ; 金秉福 ; 贺世杰 ; 李沅蔚 ; 王传远
发表期刊	环境化学
ISSN	0254-6108
	2017-01-25
卷号	36 期号:2 页码:63-67
关键词	莱州湾龙口湾总有机碳稳定碳氮同位素有机质来源
产权排序	(1)鲁东大学资源与环境工程学院;(2)中国科学院烟台海岸带研究所;(3)国家海洋局第一海洋研究所;
作者部门	中科院海岸带环境过程与生态修复重点实验室
英文摘要	通过对莱州湾-龙口湾表层沉积物样品中总有机碳(TOC)、总氮(TN)、有机碳与总氮的比值(C/N)、稳定碳氮同位素(δ13C、δ15N)生物地球化学指标的测定,分析了该区域沉积物中有机质的特征和来源.结果显示,莱州湾表层沉积物中TOC含量为0.47%±0.40%,龙口湾TOC含量为0.82%±0.37%,TN含量相差不大,因此龙口湾沉积物有机质相对含量高于莱州湾.港口的建设使龙口湾内水体流速减慢,加上龙口湾入海河流较少,使得龙口湾沉积物平均粒径(19.40μm)远低于莱州湾(43.89μm),比较容易吸附有机质.莱州湾沉积物中δ13C值为-24.96‰—21.46‰,平均值为-23.63‰;龙口湾表层沉积物中δ13C值为-23.02‰—22.39‰,平均值为-22.73‰.由此看来,莱州湾沉积物中有机质主要来源于陆生C3植物和藻类,而龙口湾有机质大部分来源于藻类,少数来自陆生C3植物.根据经典的二元模式计算,龙口湾陆源有机质的贡献比例范围为23.15%—33.67%,平均值为28.84%,莱州湾陆源贡献比例范围为7.65%—65.97%,平均值为43.75%.莱州湾沿岸有众多河流入海,尤其是含沙量最多的黄河,给湾内带来大量的陆上有机质,而龙口湾入海河流较少,沉积物中的陆上有机质较少.
中文摘要	Total organic carbon ( TOC) ，total nitrogen ( TN) ，C /N ratios，stable carbon andnitrogen isotope ( δ13 C，δ15 N) in Laizhou Bay and Longkou Bay surface sediments samples weremeasured to analyze the characteristics and sources of organic matter． The results showed that thecontent of TOC in surface sediments of Laizhou Bay was 0．47%±0．40%，and that of Longkou Baywas 0．82% ± 0． 37%． However，the TN content in the two regions was similar． Because the portconstruction slowed down the rate of the water flow in Longkou bay，and fewer rivers drained into thebay，the average particle size of sediments in Longkou Bay ( 19．40 μm) was much smaller than thatof Laizhou Bay ( 43．89 μm) ． Accordingly，there was more organic matter in Longkou Bay． The δ13C£23£®63¡ë) £® And that of Longkou Bay were within a range of £23£®02¡ë and £22£®39¡ë ( The averageof them was £ 22£® 73¡ë) £® Thus£¬the organic matter in Laizhou Bay surface sediments mainlyoriginated from the terrestrial C3 plants and algae£® However£¬the organic matter in Longkou Bay wasmainly from algae and less of it came from the terrestrial C3 plants£® Calculated by the classical binarymode£¬the proportion of terrestrial organic matter ranged from 23£®15% to 33£®67%£¬with an average of28£®84% for Longkou Bay£® It varied from 7£®65% to 65£®97%£¬with an average of 43£®75% for LaizhouBay£® As a result of many rivers along the coast of Laizhou Bay£¬including Yellow £Òiver with the mostsandiness£¬plenty of terrestrial organic matter was brought into Laizhou Bay£® Compared with LaizhouBay£¬fewer rivers along the coast of Longkou Bay brought less terrestrial organic matter into it.
资助机构	中国科学院科技服务网络计划(STS计划)项目(KFJ-EW-STS-127) ; 中国科学院重点部署项目(KZZD-EW-14)资助~~
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:5946178
引用统计
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/22080
专题	中国科学院海岸带环境过程与生态修复重点实验室
通讯作者	王传远
作者单位	1.鲁东大学资源与环境工程学院 2.中国科学院烟台海岸带研究所 3.国家海洋局第一海洋研究所
推荐引用方式 GB/T 7714	吕双燕,金秉福,贺世杰,等. 莱州湾-龙口湾表层沉积物有机质特征及来源分析[J]. 环境化学,2017,36(2):63-67.
APA	吕双燕,金秉福,贺世杰,李沅蔚,&王传远.(2017).莱州湾-龙口湾表层沉积物有机质特征及来源分析.环境化学,36(2),63-67.
MLA	吕双燕,et al."莱州湾-龙口湾表层沉积物有机质特征及来源分析".环境化学 36.2(2017):63-67.

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