| YANG Jian,YANG Guipeng,ZHANG Honghai,ZHANG Shenghui. 2016. Temporal variations of dimethylsulfide and dimethylsulfoniopropionate in the southern Yellow Sea in spring and autumn. Acta Oceanologica Sinica, 35(2):76－87 |
| Temporal variations of dimethylsulfide and dimethylsulfoniopropionate in the southern Yellow Sea in spring and autumn |
| 春秋季南黄海二甲基硫(DMS)与二甲巯基丙酸(DMSP)的浓度分布研究 |
| Received:July 30, 2014 Revised:February 26, 2015 |
| DOI：10.1007/s13131-015-0780-y |
| Key words:dimethylsulfide dimethylsulfoniopropionate chlorophyll a sea-to-air flux the southern Yellow Sea |
| 中文关键词: 二甲基硫 二甲巯基丙酸 叶绿素a 海-气通量 南黄海 |
| 基金项目: |
| Author Name | Affiliation | E-mail | | YANG Jian | Key Laboratory of Ministry of Education for Marine Chemistry Theory and Technology, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
Coastal Environment Engineering Technology Research Center of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China | | | YANG Guipeng | Key Laboratory of Ministry of Education for Marine Chemistry Theory and Technology, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China | gpyang@ouc.edu.cn | | ZHANG Honghai | Key Laboratory of Ministry of Education for Marine Chemistry Theory and Technology, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China | | | ZHANG Shenghui | Key Laboratory of Ministry of Education for Marine Chemistry Theory and Technology, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China | |
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| Abstract: |
| Temporal distributions of dimethylsul.de (DMS) and dimethylsulfoniopropionate (DMSP) were studied in the southern Yellow Sea (SYS) during April and September 2010. The mean concentrations (range) of DMS, dissolved and particulate DMSP (DMSPd and DMSPp) in the surface waters in spring are 1.69 (0.48-4.92), 3.18 (0.68-6.75) and 15.81 (2.82-52.33) nmol/L, respectively, and those in autumn are 2.80 (1.33-5.10), 5.45 (2.19-11.30) and 30.63 (6.24-137.87) nmol/L. On the whole, the distributions of DMS and DMSP in spring are completely different from those in autumn. In the central part of the SYS, the concentrations of DMS and DMSP in spring are obviously higher than those in autumn, but the opposite situation is found on the south of 34°N, which can be attributed to the differences in nutrients and phytoplankton biomass and composition between spring and autumn. Besides, the seasonal variations of water column stability and the Changjiang diluted water also have significant impact on the distributions of DMS and DMSP in spring and autumn on the south of 34°N. DMS and DMSPp concentrations coincide well with chlorophyll a (Chl a) levels in the spring cruise, suggesting that phytoplankton biomass may play an important role in controlling the distributions of DMS and DMSPp in the study area. Annual DMS emission rates range from 0.015 to 0.033 Tg/a (calculated by S), respectively, using the equations of Liss and Merlivat (1986) and Wanninkhof (1992). This result implies a signi.cant relative contribution of the SYS to the global oceanic DMS fluxes. |
| 中文摘要: |
| 2010年4月和9月对南黄海进行了大面调查,研究了春季和秋季南黄海二甲基硫(DMS)和二甲巯基丙酸内盐(DMSP)的浓度分布、DMS海-气通量及其影响因素。调查结果表明,4月DMS、溶解态DMSP(DMSPd)和颗粒态DMSP(DMSPp)的浓度分别为1.69(0.48—4.92), 3.18(0.68—6.75)和15.81(2.82—52.33)nmol/L;9月DMS、溶解态DMSP(DMSPd)和颗粒态DMSP(DMSPp)的浓度分别为2.80(1.33—5.10), 5.45(2.19—11.30)和 30.63(6.24—137.87)nmol/L。总体上,春季和秋季南黄海DMS和DMSP的浓度分布存在明显差异。在南黄海中央海域,春季DMS和DMSP的浓度明显高于秋季,但是在北纬34°以南,情况则正好相反。这主要是由于营养盐以及浮游植物的生物量和组成存在明显差异。此外,水体稳定性以及长江冲淡水的季节差异也对北纬34°以南海域的DMS和DMSP浓度分布存在明显影响。相关性分析表明,春季DMS和DMSPp均与叶绿素a(Chl-a)存在明显的相关性。这说明浮游植物生物量在控制南黄海DMS和DMSPp的浓度分布方面发挥重要的作用。初步估算南黄海DMS的年释放通量为0.015- 0.033 Tg·S/a。这一结果表明南黄海DMS的释放对全球海洋DMS通量有重要贡献。 |
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