南海北部神狐海域现代沉积物中硫酸盐还原菌和硫氧化菌的检出：脂肪酸生物标志物的指示

茅晟懿; 朱小畏; 孙永革; 管红香; 邬黛黛; 吴能友

doi:10.3724/SP.J.1140.2015.02139

南海北部神狐海域现代沉积物中硫酸盐还原菌和硫氧化菌的检出：脂肪酸生物标志物的指示

茅晟懿^1,2,
朱小畏^2,3, ,,
孙永革⁴,
管红香^1,2,
邬黛黛^1,2,
吴能友^1,2

1. 中国科学院广州能源研究所, 广州 510640;
2. 中国科学院广州天然气水合物研究中心, 广州 510640;
3. 中国科学院广州地球化学研究所, 广州 510640;
4. 浙江大学地球科学系, 杭州 310027

基金项目:

有机地球化学国家重点实验室开放基金项目(OGL-201209)

中国科学院广州能源研究所所长基金项目(y107r71001)

国家自然科学基金项目(41303067,41103043)

详细信息

作者简介:
茅晟懿(1983-),女,副研究员,主要从事有机地球化学研究,E-mail:maoshengyi@gmail.com

中图分类号: P744.4
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出版历程
- 收稿日期: 2014-07-10
- 修回日期: 2014-10-08

IDENTIFICATION OF SULFATE REDUCING BACTERIA AND SULFUR-OXIDIZING BACTERIA IN MARINE SEDIMENTS FROM SHENHU AREA, NORTHERN SOUTH CHINA SEA: IMPLICATION FROM FATTY ACIDS

1. Guangzhou Institute of Energy Conversion, CAS, Guangzhou 510640;
2. Guangzhou Center for Gas Hydrate Research, CAS, Guangzhou 510640;
3. Guangzhou Institute of Geochemistry, CAS, Guangzhou 510640;
4. Department of Geosciences, Zhejiang University, Hangzhou 310027

摘要

摘要: 对南海北部神狐海域Site 4B站位现代沉积物中脂肪酸组分进行了分离,主要讨论了支链脂肪酸和单不饱和脂肪酸的来源,认为i/a-C_15:0、i/a-C_17:0、16:1ω5和18:1ω9来自硫酸盐还原菌(SRB),而16:1ω7t/c和18:1ω7来自硫氧化菌(SOB)。沉积物中SRB和SOB分布形式可能和硫酸盐还原作用生成硫化物、硫化物又被氧化生成硫酸盐和元素硫、元素硫歧化作用生成硫化物和硫酸盐有关,并在整个硫循环系统中SRB起到主导作用;而在95~97 cm层位剧增的SRB和SOB生物量与站位附近底辟构造活跃带来深部大量的营养流体有关。
- 硫酸盐还原菌 /
- 硫氧化菌 /
- 脂肪酸 /
- 神狐海域
Abstract: The lipid biomarkers of fatty acids in Site4B sediments from Shenhu Area, Northern South China Sea are studied in this paper and the sources of branched fatty acids and monounsaturated fatty acids are discussed. The results reveal that i/a-C_15:0, i/a-C_17:0, 16:1ω5 and 18:1ω9 are derived from sulfate reducing bacteria (SRB), while 16:1ω7t/c and 18:1ω7 are originated from sulfur-oxidizing bacteria (SOB). The distribution of SRB and SOB may be related with the process that sulfate was reduced to sulfide, and then sulfide oxidized to sulfate and element of sulfur, and at last elemental sulfur was disproportionated to sulfide and sulfate. In this process, SRB dominated the sulfur cycle system in the sediments. The increasing biomass of SRB and SOB at depths of 95~97 cm is related with diapire structure around Site4B, which carries a great amount of nutrient fluid.
- sulfate reducing bacteria /
- sulfur-oxidizing bacteria /
- fatty acid /
- Shenhu Area

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