极地研究2017，Vol.29Issue(3)：327-337,11.DOI:10.13679/j.jdyj.2017.3.327
南极普里兹湾营养盐分布特征及季节性消耗
DISTRIBUTION AND SEASONAL DEPLETION OF NUTRIENTS IN PRYDZ BAY, ANTARCTICA
摘要
Abstract
Nutrient data collected in Prydz Bay during the CHINARE 25/27/29 cruises were analyzed to study the distribution pattern of nutrient concentrations. The consumption, absorption ratio, and structure of nutrients (NNU, NPU, and NSiU) in summer were evaluated based on the existence of theTmin layer. The results showed that the spatial distributions of nutrient concentrations in the surface waters of Prydz Bay had obvi-ous regional characteristics. The highest, intermediate, and lowest concentrations of nutrients were observed in the open sea, continental shelf, and marginal ice shelf areas, respectively. Consumption of nutrients in inner areas of Prydz Bay was higher than outer areas partly because of the influence of the phytoplankton bloom in austral summer; a period in which nutrients are absorbed by phytoplankton for photosynthesis. The NSiU/NNU ratios showed distribution patterns similar to nutrient concentrations but opposite to Chla con-centration. It is speculated that this difference is mainly due to the higher supply of iron in the continental shelf region and inner Prydz Bay area comparted with the open sea. Investigation of the structure and changes of nutrient concentrations in Prydz Bay can help us better understand the biogenic element cycle processes in the Southern Ocean and provide a basis for predicting the evolution of phytoplankton structure in the Southern Ocean.关键词
营养盐/空间分布特征/季节性消耗/吸收比值/普里兹湾Key words
nutrients/spatial distributions/seasonal depletion/remove ratios/Prydz Bay引用本文复制引用
陈际雨,韩正兵,扈传昱,孙维萍,张海生..南极普里兹湾营养盐分布特征及季节性消耗[J].极地研究,2017,29(3):327-337,11.基金项目
国家自然科学基金(41406219,41306202,41376193)、基本科研业务费专项资金(JT1405,JG1404,JG1313)、南北极环境综合考察与评估专项(CHINARE2016-04-04,04-01,01-04)、中国极地科学战略研究基金(20150302)和海洋公益性行业科研专项(201405031-04)资助 （41406219,41306202,41376193）
