甬江干流浮游植物的群落结构及其季节变化  

Seasonal Change in Structure of Phytoplankton Communities in the Yongjiang River

作　　者：宋贤英 张捷[2] 白春节[2] 周蓉蓉 刘伟 徐石林 谭大鹏 黄平沙[2] 

机构地区：[1]宁波市环境保护科学研究设计院,宁波315012 [2]浙江万里学院生物与环境学院,宁波315100

出　　处：《应用与环境生物学报》2013年第4期663-669,共7页Chinese Journal of Applied and Environmental Biology

基　　金：宁波市科技计划项目(2010A80002)资助~~

摘　　要：为了评价甬江水环境质量,应用物种丰富度指数D、Pielou均匀度指数J’以及Shannon-Wiener多样性指数H’、浮游植物群落的总耐污指数,对甬江干流13个断面浮游植物群落的基本结构特点与季节变化进行研究;并使用PREIMER 6.0软件对浮游植物群落数据进行Two-way ANOSIM相似性分析、Bray-Curtis相似性等级聚类分析以及MDS标序的计算.结果显示:甬江干流共有浮游植物114种(属),隶属于6门41科80属;其中以绿藻种类最多,硅藻次之.第一优势种为颤藻(Oscillatoria sp.),第二优势种为直链藻(Melosira sp.).浮游植物群落的丰度在5.2×103-2.8714×106ind./L内变动,其丰度的季节变化多呈单峰型,以春季高峰为主.对甬江干流浮游植物群落的相似性比较显示:各断面间和季节间都存在着显著差异,分别为R=0.379,P=0.1%和R=0.462,P=0.1%;季节间差异性大于断面间的差异性.浮游植物群落多样性指数以及藻类污染指数的计算结果显示甬江干流已受到一定程度的污染.In order to evaluate the water quality of the Yongjiang River, the structure characteristics and the seasonal changes of the phytoplankton community from 13 sections were studied by the Margalef＇s index （D）, Pielou evenness index （J＇）, Shannon-Wiener diversity index （H＇） and total tolerance index. The Two-way ANOSIM similarity analysis on phytoplankton community data, Bray-Curtis similarities on hierarchical clustering analysis and MDS standard sequence were calculated by using PREIMER 6.0 software. The results showed that there were 114 phytoplankton species, belonging to6 phyla, 41 families and 80 genera, dominated by green algae and diatoms. The dominant species were Oscillatoria sp. and Melosira sp. The abundances were from 5.2×10^3 to 2.8714×10^6 ind./L with an unimodal seansonal change pattern. In most cases the peak of the abundance was presented in spring. The similarity comparison of the phytoplankton communities showed significant difference among the sections （R = 0.379, P = 0.1%） and seasons （R = 0.462, P = 0.1%）. The community diversity index and algae pollution index showed that the water is polluted in the river. Fig 5, Tab 4, Ref41

关 键 词：浮游植物 群落结构 生物多样性 水质评价 甬江 

分 类 号：Q948.8[生物学—植物学]