| 南大洋底栖生态环境研究I:Maxwell湾和Admiralty湾 |
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| 引用本文： | 程先豪,王永泓,夏卫平,张海生.南大洋底栖生态环境研究I:Maxwell湾和Admiralty湾[J].极地研究,1992,4(3):38-45. |
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| 作者姓名： | 程先豪 王永泓 夏卫平 张海生 |
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| 作者单位： | 国家海洋局第二海洋研究所 杭州310012
(程先豪，王永泓，夏卫平)，国家海洋局第二海洋研究所 杭州310012(张海生) |
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| 基金项目： | 国家南极考察委员会基金，国家自然科学基金资助项目 |
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| 摘 要： | 本文分析了中国首次南大洋考察 (1 984/1 985 )现场及后续工作资料 ,并与其它纬度有关海区进行了比较。结果表明 ,在研究海湾充氧的底层水及弱氧化性的表层沉积物环境 (锰氧化物为优势氧化剂 )中 ,底栖生物较为丰富 ;而在垂直深度 5 - 1 0 cm以下 ,硫酸盐还原反应遏制了底内多毛类动物等的向下繁衍。测区主要大型底栖动物的分布特点是在特定条件下演化的结果 ,南大洋气候寒冷 ,碳酸盐溶解度较高 ,但其沉积物上覆水和间隙水中钙离子却并不高于其它纬度海区 ,因此钙离子的不足可能限制了需要钙质碳酸盐形成外壳的甲壳类和软体动物的繁衍而造成其在研究区域壳薄且所占比例较少的分布特征。上覆水温与底栖多毛类的生长有一定的关系 ,这可能表明南大洋测区该类生物尚未完全适应极区的寒冷气候。沉积物中微生物的数量主要受活性有机质量的制约。
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| 关 键 词： | 南大洋 沉积物 生态 |
RESEARCH ON THE BENTHIC ECOLOGY ENVIRONMENT,ANT- ARCTIC OCEAN:I.MAXWELL BAY AND ADMIRALTY BAY |
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| Cheng Xianhao,Wang Yonghong,Xia Weiping and Chang Haishen.RESEARCH ON THE BENTHIC ECOLOGY ENVIRONMENT,ANT- ARCTIC OCEAN:I.MAXWELL BAY AND ADMIRALTY BAY[J].Chinese Journal of Polar Research,1992,4(3):38-45. |
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| Authors: | Cheng Xianhao Wang Yonghong Xia Weiping and Chang Haishen |
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| Abstract: | The information on benthic organisms and the geochemical environment obtained from the Chinese First Exploration on Antarctic Ocean and its succeeded analytic works.The results shows that in the circumstances of the studied area in which the bottom water is plentiful in dissolved oxygen and the surface sediments is in weak oxidation(manganese oxides as dominated oxident) ,benthic organisms grow well while the prosperity of the animals are limited below5-1 0 cm of the profiles in which the environment is controlled by sulfate reducing reaction. It is the result of evolution for the characteristics of the main benthic organisms under the special circumstance in studied area.On the condition of low temperature of the Antarctic Ocean,the solubility of carbonates is higher than that in otherocean's,but the concentration of calcium in overlying water and porewater is not higher than that in other ocean,which may results in the difficulty forthe crustacean and molluscs to obtain sufficient calcium to form their solid crust.Furthermore,there is a certain relation between the amount of sedentary polychaetes and the temperature in overlying waters. That might demonstrate that the animals had still not quite adjusted to the extremly cool of the Antarctic Ocean,however it should be left for furtherwork.Besides,the research proposed thatthe number of the microorganisms is controlled by the amountof active organic matters in the sediments. |
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| Keywords: | Antarctic Ocean sediment ecology |
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