极地研究2012，Vol.24Issue(2)：178-186,9.DOI:10.3724/SP.J.1084.2012.00178
2011年南极夏季普里兹湾营养盐与浮游植物生物量的分布
DISTRIBUTION OF NUTRIENTS AND CHL A IN PRYDZ BAY DURING THE AUSTRAL SUMMER OF 2011
摘要
Abstract
Water samples from Prydz Bay were collected during the Antarctic summer of 2011 and the contents of chlorophyll a ( Chl a) and other nutrients were analyzed. The results showed that the concentration of Chl a in the surface water of Prydz Bay was highest at the margin of the ice shelf, lower at the continental shelf and lower again at the continental slope and in the open sea. The melting of ice and the stability of the water body were the main factors influencing Chl a distribution in the surface water. The vertical distribution of Chl a was related to irradiation, the upper water had a high content and it decreased with depth. The horizontal and vertical distribution of phosphate, silicate and nitrate was opposite to that of Chl a. The distribution of ammonium in the surface water was opposite to that of the other main nutrients and the vertical distribution of ammonium at the margin of the ice shelf and at the continental shelf differed compared with the distribution at the continental slope and in the open sea. The degradation of organic matter primarily controlled the ammonium content in the water column at the margin of the ice shelf and at the continental shelf, however the balance between uptake by phytoplankton and the degradation of organic matter controlled the ammonium content at the continental slope and in the open sea. According to the content and distribution of Chl a and other nutrients, the characteristics of the deep chlorophyll maximum (DCM) and the impact of the inhibition of ammonium on nitrate uptake in the surface water south of 67. 5°S were discussed.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Key words
phosphate, silicate, nitrate, ammonium, DCM,Prydz Bay引用本文复制引用
孙维萍,扈传昱,韩正兵,潘建明,翁焕新..2011年南极夏季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):178-186,9.基金项目
国家自然科学基金(41076134)、基本科研业务专项资金项目(JT1009)和浙江省自然科学基金(Y5110166)资助 （41076134）
