2011年秋季和2012年春季大亚湾海域浮游植物的分布及主要影响因素

姜犁明; 赵明忠; 徐智焕; 杨季芳; 董良飞; 孙晓欣; 徐旭; 杨丹

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海洋学研究 ›› 2013, Vol. 31 ›› Issue (2) : 86-92.

研究报道

2011年秋季和2012年春季大亚湾海域浮游植物的分布及主要影响因素

姜犁明^1,2,3, 赵明忠^*2, 徐智焕^2,3, 杨季芳^2,3, 董良飞¹, 孙晓欣^1,2,3, 徐旭^2,3, 杨丹⁴

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The distributions of the phytoplankton and their impacting factors in the Daya Bay in autumn 2011 and in spring 2012

JIANG Li-ming^1,2,3, ZHAO Ming-zhong^*2, XU Zhi-huan^2,3, YANG Ji-fang^2,3, DONG liang-fei¹, SUN Xiao-xin^1,2,3, XU Xu^2,3, YANG Dan⁴

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摘要

在2011年10月(代表秋季)和2012年4月(代表春季)对大亚湾海域浮游植物的种类组成、优势种和丰度进行了观测,实测数据采用Surfer 8.0软件进行绘图和插图制作,用SPSS 17.0软件进行主成分因子分析(PCA),同时用多元逐步回归分析方法,以主成分得分为解释变量,研究环境因子对浮游植物丰度的影响,以筛选出影响该海区浮游植物丰度分布的重要环境因子,并讨论了浮游植物丰度分布特征与环境因子的相关性及影响浮游植物分布的主要因素。分析结果表明:2个航次观测获得的浮游植物有4门31属51种(包括变型与变种),其中硅藻门的占优势,甲藻门的次之,黄藻与着色鞭毛藻门的较少。秋季浮游植物优势种有赤潮异湾藻Heterosigma akashiwo、中肋骨条藻Skeletonema costatum、刚毛根管藻Rhizosolenia setigera、尖刺菱形藻Nitzschia pungens和菱形海线藻Thalassionema nitzschioides;春季浮游植物优势种有叉状角藻Ceratium furca、微小原甲藻Prorocentrum minimum、梭角藻Ceratium fusus和三角角藻Ceratium tripos。秋季浮游植物丰度为1.56×10⁴~8.03×10⁴个/dm³,平均值为3.95×10⁴个/dm³;春季浮游植物丰度为1.21×10⁴~4.70×10⁵个/dm³,平均值为7.84×10⁴个/dm³。水温、pH值、磷酸盐和总磷是影响大亚湾海域浮游植物分布的主要因素。

Abstract

This study was carried out in the Daya Bay in October 2011 and April 2012. Based on the data collected from 12 stations, phytoplankton taxonomic composition, abundance, dominance species and their impacting factors were examined. Surfer 8.0 software was used for drawing and illustrating, while SPSS 17.0 software was used for analyzing principal component factors (PCA). At the same time, it used multiple stepwise regression analysis method, and principal component scores as explanatory variables, aiming at studying the effect of environmental factor for phytoplankton abundance and picking out the main factors which influenced the distribution of phytoplankton in the Daya Bay. Furthermore, its distribution characteristics and the correlation with environmental factors were discussed. A total of 51 species (4 phyla, 31 genera) were identified. Among those species, Bacillariophyta is the dominant species, Pyrrophyta is subdominant species, and Xanthophyceae and Chromophyia are even rarely. The dominant species are Heterosigma akashiwo、Skeletonema costatum、Rhizosolenia setigera、Nitzschia pungens、Thalassionema nitzschioides in autumn, and Ceratium furca、Prorocentrum minimum、Ceratium fusus、Ceratium tripos in spring. The abundance of phytoplankton range from 1.56×10⁴ to 8.03×10⁴ cell/dm³ and the average value is 3.95×10⁴ cell/dm³ in autumn and range from 1.21×10⁴ to 4.70×10⁵ cell/dm³ and the average value is 7.84×10⁴ cell/dm³ in spring. Temperature、pH、PO^3-₄-P and TP are the main factors influencing the distribution of phytoplankton in the Daya Bay.

导出引用

姜犁明, 赵明忠, 徐智焕, 杨季芳, 董良飞, 孙晓欣, 徐旭, 杨丹. 2011年秋季和2012年春季大亚湾海域浮游植物的分布及主要影响因素[J]. 海洋学研究. 2013, 31(2): 86-92

JIANG Li-ming, ZHAO Ming-zhong, XU Zhi-huan, YANG Ji-fang, DONG liang-fei, SUN Xiao-xin, XU Xu, YANG Dan. The distributions of the phytoplankton and their impacting factors in the Daya Bay in autumn 2011 and in spring 2012[J]. Journal of Marine Sciences. 2013, 31(2): 86-92

中图分类号： Q178.53

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