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Characteristics of nitrogen forms in the surface sediments of southwestern Nansha Trough, South China Sea
Zheng Guoxia1,2; Song Jinming1; Sun Yunming1; Dai Jicui1,2; Zhang Peng1,2
2008-08-01
发表期刊CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN0254-4059
卷号26期号:3页码:280-288
文章类型Article
摘要The area of the southwestern Nansha Trough is one of the most productive areas of the southern South China Sea. It is a typical semi-deep sea area of transition from shoal to abyssal zone. To understand distributions and roles of nitrogen forms involved in biogeochemical cycling in this area, contents of nitrogen in four extractable forms: nitrogen in ion exchangeable form (IEF-N), nitrogen in weak acid extractable form (WAEF-N), nitrogen in strong alkali extractable form (SAEF-N) and nitrogen in strong oxidation extractable form (SOEF-N), as well as in total nitrogen content (TN) in surface sediments were determined from samples collected from the cruise in April-May 1999. The study area was divided into three regions (A, B and C) in terms of clay sediment (< 4 mu m) content at < 40%, 40%-60% and > 60%, respectively. Generally, region C was the richest in the nitrogen of all forms and region A the poorest, indicating that the finer the grain size is, the richer the contents of various nitrogen are. The burial efficiency of total nitrogen in surface sediments was 28.79%, indicating that more than 70% of nitrogen had been released and participated in biogeochemical recycling through sediment-water interface.; The area of the southwestern Nansha Trough is one of the most productive areas of the southern South China Sea. It is a typical semi-deep sea area of transition from shoal to abyssal zone. To understand distributions and roles of nitrogen forms involved in biogeochemical cycling in this area, contents of nitrogen in four extractable forms: nitrogen in ion exchangeable form (IEF-N), nitrogen in weak acid extractable form (WAEF-N), nitrogen in strong alkali extractable form (SAEF-N) and nitrogen in strong oxidation extractable form (SOEF-N), as well as in total nitrogen content (TN) in surface sediments were determined from samples collected from the cruise in April-May 1999. The study area was divided into three regions (A, B and C) in terms of clay sediment (< 4 mu m) content at < 40%, 40%-60% and > 60%, respectively. Generally, region C was the richest in the nitrogen of all forms and region A the poorest, indicating that the finer the grain size is, the richer the contents of various nitrogen are. The burial efficiency of total nitrogen in surface sediments was 28.79%, indicating that more than 70% of nitrogen had been released and participated in biogeochemical recycling through sediment-water interface.
关键词Nitrogen Form Surface Sediment Nansha Trough South China Sea
学科领域Limnology ; Oceanography
DOI10.1007/s00343-008-0280-4
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收录类别SCI
语种英语
WOS记录号WOS:000258601000009
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被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/5404
专题海洋生态与环境科学重点实验室
实验海洋生物学重点实验室
作者单位1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
2.Dalian Univ, Coll Environm & Chem Engn, Dalian 116622, Peoples R China
第一作者单位中国科学院海洋研究所
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GB/T 7714
Zheng Guoxia,Song Jinming,Sun Yunming,et al. Characteristics of nitrogen forms in the surface sediments of southwestern Nansha Trough, South China Sea[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2008,26(3):280-288.
APA Zheng Guoxia,Song Jinming,Sun Yunming,Dai Jicui,&Zhang Peng.(2008).Characteristics of nitrogen forms in the surface sediments of southwestern Nansha Trough, South China Sea.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,26(3),280-288.
MLA Zheng Guoxia,et al."Characteristics of nitrogen forms in the surface sediments of southwestern Nansha Trough, South China Sea".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 26.3(2008):280-288.
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