2011夏季南极普里兹湾营养盐与浮游植物生物量的分布

doi:10.3724/SP.J.1084.2012.00178

极地研究 ›› 2012, Vol. 24 ›› Issue (2): 178-186.DOI: 10.3724/SP.J.1084.2012.00178

2011夏季南极普里兹湾营养盐与浮游植物生物量的分布

孙维萍¹,²,扈传昱²,韩正兵²,潘建明²,翁焕新¹

¹ 浙江大学
²国家海洋局第二海洋研究所

收稿日期:2011-12-05 修回日期:2012-02-21 出版日期:2012-06-30 发布日期:2012-06-30
通讯作者: 孙维萍
基金资助:
国家自然科学基金;浙江省自然科学基金;基本科研业务专项资金项目

Distribution of nutrients and Chla in Prydz Bay during the austral summer of 2011

Sun Weiping^1,2，Hu Chuanyu²，Han Zhengbing²，Pan Jianming²，Weng Huanxin¹

¹ Zhejiang University

² Second Institute of Oceanography, SOA

Received:2011-12-05 Revised:2012-02-21 Online:2012-06-30 Published:2012-06-30
Supported by:
the National Natural Science Foundations of China

摘要/Abstract

摘要： 利用2011南极夏季在普里兹湾获取的海水样，检测了Chla、磷酸盐、硅酸盐、硝酸盐和铵盐的含量。结果表明，普里兹湾表层海水中Chla的含量普遍具有冰架边缘>陆架区>陆坡及深海区的分布特征，海冰的消融及水体的稳定性是影响表层海水Chla分布的主要原因。Chla含量的垂直分布与光照条件相关，具有上层水体含量高，随着深度逐渐降低的分布特征。磷酸盐、硅酸盐和硝酸盐的水平及垂直分布特征都与Chla的分布格局相反。表层海水中铵盐的分布特征与磷酸盐等主要营养盐的分布格局相反，冰架边缘、陆架区铵盐的垂直分布特征与陆坡及深海区不同，在冰架边缘和陆架区有机质降解过程主导着水柱中铵盐的浓度，而浮游植物吸收作用与有机质降解过程之间的平衡控制着陆坡及深海区铵盐的垂直分布。根据Chla与营养盐的浓度及分布特征，结合温度、盐度、溶解氧等水文要素，分析探讨了Chla深层最大值现象（DCM）的成因及67.5°S以南表层海水中铵盐对硝酸盐吸收的抑制作用。

关键词: 磷酸盐, 硅酸盐, 硝酸盐, 铵盐, 叶绿素a深层最大值, 普里兹湾

Abstract: Water samples in Prydz Bay were collected during the Antarctic summer of 2011 and the contents of Chla and nutrients were analyzed. The results showed that the distribution of Chla in the surface water of Prydz Bay was: margin of ice shelf> continental shelf>continental slope and open sea, melting of ice and stability of water body were the main factors that had influence on the Chla distribution in the surface water. The vertical distribution of Chla was relate to the irradiation condition, mostly upper water had high content and decreased with the depth。Horizontal and vertical distribution of phosphate, silicate and nitrate was contrary to that of Chla. Distribution of ammonium in the surface water was contrary to that of main nutrients. The vertical distribution of ammonium at the margin of ice shelf and in the continental shelf was different with that in the continental slope and open sea. The degradation of organic matters mainly control the ammonium content in the water column at the margin of ice shelf and in the continental shelf, however the balance between uptake by phytoplankton and degradation of organic matters controlled that in the continental slope and open sea. According to the contents and distribution of Chla and nutrients, the cause of DCM and the inhibition of ammonium on nitrate uptake in the surface water south of 67.5°S were discussed.

Key words: phosphate, silicate, nitrate, ammonium, DCM, Prydz Bay

孙维萍扈传昱韩正兵潘建明翁焕新. 2011夏季南极普里兹湾营养盐与浮游植物生物量的分布[J]. 极地研究, 2012, 24(2): 178-186.

Sun Weiping，Hu Chuanyu，Han Zhengbing，Pan Jianming，Weng Huanxin. Distribution of nutrients and Chla in Prydz Bay during the austral summer of 2011[J]. ADVANCES IN POLAR SCIENCE, 2012, 24(2): 178-186.

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2011夏季南极普里兹湾营养盐与浮游植物生物量的分布

Distribution of nutrients and Chla in Prydz Bay during the austral summer of 2011

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