|
|||||
|
|
| 珠江口沉积物柱状样的脂肪酸垂向变化特征 | |
| 引用本文： | 伏美燕,周怀阳,王虎,李季伟,尹希杰,杨伟芳.珠江口沉积物柱状样的脂肪酸垂向变化特征[J].海洋湖沼通报,2010(1). |
| 作者姓名： | 伏美燕 周怀阳 王虎 李季伟 尹希杰 杨伟芳 |
| 作者单位： | 1. 油气藏地质及开发工程国家重点实验室,四川,成都,610059;成都理工大学能源学院,四川,成都,610059 2. 同济大学,海洋地质国家重点实验室,上海,200092;中国科学院,广州地球化学研究所,广东,广州,510640 3. 中国科学院,广州地球化学研究所,广东,广州,510640 4. 国家海洋局第三海洋研究所,福建,厦门,361000 |
| 基金项目： | 国家自然科学基金40976045/D0604资助 |
| 摘 要： | 珠江口3个站位沉积柱的脂肪酸研究结果显示:沉积物中含量最高的脂肪酸是C16:0,其他脂肪酸包括不饱和脂肪酸、单甲基支链脂肪酸和长链脂肪酸。脂肪酸组成表明研究区有机质主要来源于藻类、细菌和陆源有机质。由于横琴岛附近的HQ1031站位靠近外海,初级生产力较高,因而含较多藻类脂肪酸。离淇澳岛较远的QA-B站位处于河口上缘,陆源物质丰富,初级生产力较低,因此该站位含较多陆源脂肪酸。横琴岛附近HQ1031站位的TOC值和总脂肪酸含量均大于QA-B站位,这两个站位的TOC值与总脂肪酸含量在垂向上的相关性差。横琴岛附近HQ1031站位和离淇澳岛较近的QA-A站位分别在20-22cm和16-18cm处藻类脂肪酸突然大量增加,可能与藻类输入突然增多有关。沉积物中所检测到的能指示厌氧微生物或革兰氏阳性菌的脂肪酸含量高于革兰氏阴性菌,表明珠江口沉积物微生物群落中以厌氧微生物为主。 |
| 关 键 词： | 脂肪酸 珠江口 沉积物 有机质 生物标志物 |
THE FATTY ACIDS PROFILE IN CORE SEDIMENT IN THE PEARL RIVER ESTUARY |
|
| FU Meiyan,ZHOU Huaiyang,WANG Hu,LI Jiwei,YIN Xijie,YANG Weifang.THE FATTY ACIDS PROFILE IN CORE SEDIMENT IN THE PEARL RIVER ESTUARY[J].Transaction of Oceanology and Limnology,2010(1). | |
| Authors: | FU Meiyan ZHOU Huaiyang WANG Hu LI Jiwei YIN Xijie YANG Weifang |
| Institution: | 1 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation;Chengdu 610059;China;2 College of Energy Resource;Chengdu university of technology;3 State Key Laboratory of Marine Geology;Tongji University;Shanghai 20009;4 Guangzhou Institute of Geochemistry;CAS;Guangzhou 510640;5 Third Institute of Oceanography;SOA;Xiamen 361000;China |
| Abstract: | The fatty acid compositions of three sediment cores are analyzed,two of which are collected in the northern of Qi'ao Island and the third one is collected around Hengqin Island in the Pearl River Estuary.The main fatty acids are C16:0 in sediments.The other detected fatty acids include iso and anteiso fatty acids,long-chain fatty acids and unsaturated fatty acids.The result indicates that the organic matters in this area mainly derive from algae,bacteria and terrestrial organic material.Because the primary ... |
| Keywords: | fatty acid Pearl River estuary sediment organic matter biomarker |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |