| 南海东沙海域HD319岩心富甲烷环境底栖有孔虫群落结构 |
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| 引用本文： | 周洋,陈芳,苏新,刘广虎,陈超云.南海东沙海域HD319岩心富甲烷环境底栖有孔虫群落结构[J].海洋地质与第四纪地质,2009(3). |
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| 作者姓名： | 周洋 陈芳 苏新 刘广虎 陈超云 |
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| 作者单位： | 广州海洋地质调查局;中国地质大学海洋学院; |
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| 基金项目： | 国家自然科学基金项目(40742007,40730844);;中国地质调查局“天然气水合物资源评价及勘探开发战略研究”基金项目(GZH200200203-02-01) |
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| 摘 要： | 对南海东北部东沙海域HD319岩心富甲烷环境和非富甲烷环境底栖有孔虫进行对比研究,旨在探讨富甲烷环境对底栖有孔虫群落结构的影响。结果表明,该岩心富甲烷环境和非富甲烷环境的底栖有孔虫组成有所差异:富甲烷缺氧环境底栖有孔虫群落中耐低氧类内生种群占绝对优势,Uvigerina(U.peregerina,U.hispido-costata,U.rugosa,U.probscidea,U.spp.),Bulimina(B.aculeata,B.mexicana),Bolivina(B.bradyi,B.quad-rilatera),Globocassidulina subglobosa,Brizalina superba,Hoglundina elegans等冷泉甲烷相关种大量出现;非富甲烷一般低氧环境下底栖有孔虫以内生种含量占优势,表生种和旋向种零星出现;富氧环境下底栖有孔虫以表生种和旋向种占优势,受有机碳含量变化控制明显。推测底栖有孔虫这种群落结构的差异是适应高甲烷含量的结果,底栖有孔虫对富甲烷环境的响应通过群落结构的差异表现出来。
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| 关 键 词： | 底栖有孔虫 群落结构 富甲烷环境 东沙海域 南海 |
BENTHIC FORAMINIFERA COMMUNITIES IN METHANE-RICH ENVIRONMENT SHOWED BY CORE HD319 IN DONGSHA SEA AREA OF THE SOUTH CHINA SEA |
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| ZHOU Yang,CHEN Fang,SU Xin,LIU Guanghu,CHEN Chaoyun.BENTHIC FORAMINIFERA COMMUNITIES IN METHANE-RICH ENVIRONMENT SHOWED BY CORE HD319 IN DONGSHA SEA AREA OF THE SOUTH CHINA SEA[J].Marine Geology & Quaternary Geology,2009(3). |
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| Authors: | ZHOU Yang CHEN Fang SU Xin LIU Guanghu CHEN Chaoyun |
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| Institution: | 1 Guangzhou Marine Geologic Survey;Guangzhou 510760;China;2 School of Marine Geosciences;China University of Geosciences;Beijing 100083;China |
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| Abstract: | Faunal communities of benthic foraminifera in core HD319 in Dongsha area of the South China Sea have been studied in order to investigate the effects of gas methane on benthic foraminiferal populations.Different benthic foraminiferal assemblages were identified between methane-rich environment and non-methane environment.In methane-rich and strongly dysoxic environment,only methane-relative(methane-tolerant) species Uvigerina(U.peregerina,U.hispido-costata,U.rugosa,U.probscidea,spp.),Bulimina(B.aculeata,B.m... |
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| Keywords: | benthic foraminifera methane-rich environment faunal communities Dongsha South China Sea |
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