渤海湾浮游植物与环境因子关系的多元分析  

Phytoplankton Assemblages and Their Relation to Environmental Factors by Multivariate Statistic Analysis in Bohai Bay

作　　者：周然[1] 彭士涛[1,2] 覃雪波[1,3] 石洪华[2] 丁德文[2] 

机构地区：[1]交通运输部天津水运工程科学研究所,天津300456 [2]国家海洋局第一海洋研究所,青岛266061 [3]南开大学环境科学与工程学院,天津300071

出　　处：《环境科学》2013年第3期864-873,共10页Environmental Science

基　　金：海洋公益性行业科研专项(200805080)

摘　　要：2007年春季和夏季对渤海湾的浮游植物和环境因子进行调查,运用多元分析技术分析浮游植物在渤海湾的分布特征及其与环境因子之间的关系.调查期间共发现浮游植物26种,其中春季17种,夏季23种.春季浮游植物平均数量为115×104cells.m-3,显著高于夏季(3.1×104cells.m-3).应用主成分分析(PCA)浮游植物分布特征,结果表明,春季浮游植物主要分布于渤海的中北部,是硝酸盐含量较高的水域;夏季浮游植物分布于各个水域,但优势种主要分布于河口附近.运用冗余分析(RDA)探讨浮游植物分布与环境因子之间的关系,结果表明,影响渤海湾浮游植物分布的关键环境因子,春季是硝酸盐、亚硝酸盐和溶解性活性磷酸盐,夏季是氨氮和水温.A detailed field survey of hydrological, chemical and biological resources was conducted in the Bohai Bay in spring and summer 2007. The distributions of phytoplankton and their relations to environmental factors were investigated with multivariate analysis techniques. Totally 17 and 23 taxa were identified in spring and summer, respectively. The abundance of phytoplankton in spring was 115 ×10^4cells.m^-3, which was significantly higher than that in summer （3.1 ×10^4cells.m^-3）. Characteristics of phytoplankton assemblages in the two seasons were identified using principal component analysis （PCA） , while redundancy analysis （RDA） was used to examine the environmental variables that may explain the patterns of variation of the phytoplankton community. Based on PCA results, in the spring, the phytoplankton was mainly distributed in the center and northern water zone, where the nitrate nitrogen concentration was higher. However, in summer, phytoplankton was found distributed in all zones of Bohai Bay, while the dominant species was mainly distributed in the estuary. RDA indicated that the key environmental factors that influenced phytoplankton assemblages in the spring were nitrate nitrogen （NO3- -N） , nitrite nitrogen （NO2 -N） and soluble reactive phosphorus （SRP） , while ammonium nitrogen （NH4 -N） and water temperature （WT） played key roles in summer.

关 键 词：浮游植物 环境因子 多元分析技术 春夏季 渤海湾 

分 类 号：X173[环境科学与工程—环境科学]