Spatio-temporal distribution of dissolved sulfide in China marginal seas
文献类型：CNKI期刊论文
| 作者 | Wu XD(吴晓丹); Wu B(吴斌); Song JM(宋金明) ; Li XG(李学刚)
|
| 发表日期 | 2014-09-15 |
| 出处 | Chinese Journal of Oceanology and Limnology
 |
| 关键词 | dissolved sulfi de geochemical behavior China marginal seas current resuspension nutrient |
| 英文摘要 | With sulfide increasingly recognized as an important parameter to assess the oxidation-reduction level in aqueous environment, research on its geochemical behavior is becoming important. Water samples collected in Bohai Sea(1–19 August, 2010), Yellow Sea(20–30 November, 2010) and East China Sea(3–17 June, 2010 and 1–10 November, 2010) were used to determine the occurrence and distribution of dissolved sulfide by methylene blue spectrophotometric method. Results show that:(1) horizontally, concentration of dissolved sulfide significantly varied from the coastal region to the open sea and profoundly influenced by physical processes. High values occurred in the river-sea boundary zone "marginal filter" due to rich riverine input, frequent upwelling and active exchange in shelf edge. Terrestrial input from adjacent rivers and the current cycling contributed to the high sulfide appeared in western Bohai Sea, eastern Shandong Peninsula, and northeast of Changjiang(Yangtze) River estuary. Especially, relative higher sulfide values occurred in Yellow Sea, which is consistent with the variation of salinity largely due to the hydrodynamic feature;(2) vertically, measurement of dissolved sulfide in bottom water was higher and more variable than that in surface water caused by the wind-induced resuspension and dissimilatory sulfate reduction. Moreover, nutrient-type profile clearly identified that oxidation plays a major role in the biogeochemistry cycle of sulfide in water;(3) seasonally, investigation for East China Sea in June and November reflected seasonal variation of Changjiang River Diluted Water, Kuroshio Current, and Taiwan Warm Current. Concentration in June was much higher than that sampled in November at most stations. Mean concentration of dissolved sulfide varied seasonally from 2.26 μg/L(June) to 1.16 μg/L(November) in surface and 3.00 μg/L(June) to 1.56 μg/L(November) in bottom. Progress in the field is slow and more effort is needed to ensure the accuracy and reliability of determination and estimate the natural or anthropogenic contribution of dissolved sulfide in ecosystems. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National Natural Science Foundation of China(Nos.41121064,41306055) ; the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDA05030402) ; the National Basic Research Program of China(973 Program)(No.2011CB403602) |
| 卷 | v.32期:05页:175-186 |
| 语种 | 英文; |
| 分类号 | P734.4 |
| ISSN号 | 0254-4059 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/190306]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.UniversityofChineseAcademyofSciences 2.InstituteofOceanology,ChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | Wu XD,Wu B,Song JM,et al. Spatio-temporal distribution of dissolved sulfide in China marginal seas. 2014. |
入库方式： OAI收割
来源：海洋研究所
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