Characteristics of nitrogen forms in the surface sediments of southwestern Nansha Trough, South China Sea

doi:10.1007/s00343-008-0280-4

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	Characteristics of nitrogen forms in the surface sediments of southwestern Nansha Trough, South China Sea
	Zheng Guoxia 1,2; Song Jinming1 ; Sun Yunming 1; Dai Jicui 1,2; Zhang Peng1,2
刊名	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
	2008-08-01
卷号	26 期号:3 页码:280-288
关键词	Nitrogen Form Surface Sediment Nansha Trough South China Sea
ISSN号	0254-4059
DOI	10.1007/s00343-008-0280-4
文献子类	Article
英文摘要	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.
学科主题	Limnology ; Oceanography
URL标识	查看原文
语种	英语
WOS记录号	WOS:000258601000009
公开日期	2010-12-24
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/5405]
专题	海洋研究所_海洋生态与环境科学重点实验室海洋研究所_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
推荐引用方式 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.