| 南海北部冷泉区沉积物中微生物丰度与甲烷浓度变化关系的初步研究 |
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| 引用本文： | 苏新,陈芳,魏士平,张勇,程思海,陆红锋,黄永样.南海北部冷泉区沉积物中微生物丰度与甲烷浓度变化关系的初步研究[J].现代地质,2007,21(1):101-104. |
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| 作者姓名： | 苏新 陈芳 魏士平 张勇 程思海 陆红锋 黄永样 |
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| 作者单位： | 1. 中国地质大学,海洋学院,北京,100083
2. 广州海洋地质调查局,广东,广州,510760 |
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| 摘 要： | 对2006年“海洋四号”在南海北部陆坡和深水冷泉活动区获得的两个重力活塞岩心中微生物丰度变化和甲烷浓度变化的关系进行了初步研究。荧光显微镜观察和直接计数结果表明,研究区冷泉微生物细胞形态有多种类型,但常见和占优势的是杆状、球状和链状。微生物丰度随不同站位和深度变化于106-105细胞个体/g之间。甲烷浓度高异常站位的微生物丰度大于甲烷浓度低的站位。在同一岩心中,微生物的丰度变化也和甲烷浓度变化相吻合,甲烷浓度高,微生物丰度大,反之亦然。该结果表明了冷泉微生物对沉积物中甲烷浓度的增加或减少十分敏感。
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| 关 键 词： | 微生物丰度 甲烷浓度 沉积物 冷泉 中国南海 |
| 文章编号： | 1000-8527(2007)01-0101-04 |
| 收稿时间： | 12 10 2006 12:00AM |
| 修稿时间： | 01 20 2007 12:00AM |
Preliminary Study on the Correlation between Microbial Abundance and Methane Concentration in Sediments from Cold Seeps in the Northern South China Sea |
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| SU Xin,CHEN Fang,WEI Shi-ping,ZHANG Yong,CHENG Si-hai,LU Hong-feng,HUANG Yong-yang.Preliminary Study on the Correlation between Microbial Abundance and Methane Concentration in Sediments from Cold Seeps in the Northern South China Sea[J].Geoscience——Journal of Graduate School,China University of Geosciences,2007,21(1):101-104. |
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| Authors: | SU Xin CHEN Fang WEI Shi-ping ZHANG Yong CHENG Si-hai LU Hong-feng HUANG Yong-yang |
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| Institution: | 1. School of Marine Geosciences, China University of Geosciences, Bering 100083, China; 2. Guangzhou Marine Geological Survey, Guangzhou, Guangdong 510760, China |
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| Abstract: | A geomicrobiological study was carried out to investigate the relationship between variations of bacterial abundance and methane concentration.Bacterial samples from 2 gravity cores in cold seep areas on the continental slope of the Northern South China Sea,collected during 2006 "Haiyang 4" cruise,were analyzed by means of fluorescence microscopy.The result shows that bacterial abundance ranges from 106 cells/g to 105 cells/g sediment,and it is higher at the methane vent site than that of at the site far from a cold seep.Within the same sediment core from the methane vent site,bacterial abundance increases in the interval where methane concentration increased.This preliminary result suggests that variation in bacterial abundance seems to be sensitive to variations of methane concentration in cold seep sediments. |
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| Keywords: | bacterial abundance methane concentration sediment cold seep the South China Sea |
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