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
IDENTIFICATION OF SULFATE REDUCING BACTERIA AND SULFUROXIDIZING BACTERIA IN MARINE SEDIMENTS FROM SHENHU AREA, NORTHERN SOUTH CHINA SEA:IMPLICATION FROM FATTY ACIDS
查看参考文献59篇
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文摘
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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。 |
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其他语种文摘
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The lipid biomarkers of fatty acids in Site4 Bsediments 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∶1ω7 t/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 Site 4B,which carries a great amount of nutrient fluid. |
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来源
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海洋地质与第四纪地质
,2015,35(2):139-148 【核心库】
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DOI
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10.3724/SP.J.1140.2015.02139
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关键词
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硫酸盐还原菌
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硫氧化菌
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脂肪酸
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神狐海域
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地址
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1.
中国科学院广州能源研究所, 广州, 510640
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中国科学院广州天然气水合物研究中心, 广州, 510640
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浙江大学地球科学系, 杭州, 310027
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0256-1492 |
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学科
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海洋学 |
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基金
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国家自然科学基金
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中国科学院广州能源研究所所长基金项目
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中国科学院广州地球化学研究所有机地球化学国家重点实验室基金
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文献收藏号
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CSCD:5428396
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