湖泊科学Issue(5)：902-910,9.DOI:10.18307/2015.0517
湖北金沙河水库浮游植物群落结构及其与水环境因子的关系∗
Community structures of phytoplankton and their relationships with environmental factors in the Jinshahe Reservoir, Hubei Province
摘要
Abstract
In order to evaluate the water quality of drinking water resource in the middle reaches of the Changjiang River, phyto-plankton community structures and their diversities were investigated seasonally from August, 2013 to April, 2014 in the Jinshahe Reservoir, Hubei Province. Meanwhile, multivariate statistics was used to analyze the relationships between phytoplankton assem-blages and environmental variables. The results showed that there were total of 216 species of phytoplankton belonging to 8 phyla and 94 genera. Chlorophyta which made up of 51. 39% of the total numbers of the species was the dominant group, followed by Bacillariophyta and Cyanophyta. Dominant species varied in different seasons. In summer, the ecological dominance of Synedra acus was the highest (0. 195), and in autumn, Phormidium tenus (0. 180) and Raphidiopsis sinensia (0. 171) had the highest ecological dominance. In winter, Cyclotella stelligera (0. 220) and Dinobryon cylindricum (0. 234) had the highest ecological dominance, and Achanthidum catenatum was the absolute dominant species with its ecological dominance of 0. 910. In general, Cyanophyta, Bacillariophyta and Chlorophyta were dominant groups in summer, and Cyanophyta, Bacillariophyta, Chlorophyta and Cryptophyta were dominant groups in autumn. Bacillariophyta and Chrysophyta were dominant groups in winter, and Bacillariophy-ta was the absolute dominant group in spring. Biodiversity indices showed that phytoplankton had higher values of the Shannon-Wiener diversity and the Pielou diversity in autumn, but the lowest values in spring because the absolute dominant species appeared in spring other than in autumn. In addition, the highest value of Margalef diversity occurred in autumn because of its larger number of species. Redundancy analysis was used to analyze the relationships between the dominant species in each season and the envi-ronmental factors filtered by Pearson correlation analysis. The results showed that phosphate, total phosphorus and water tempera-ture were the main environmental factors that have influenced phytoplankton assemblages. The reservoir had worse water quality in summer and autumn than in spring and winter which impacted on the variations of dominant groups of phytoplankton in different seasons, and had worse water quality in spring and summer than in autumn and winter which impacted on the cell abundance and biodiversity indices.关键词
金沙河水库/浮游植物/群落结构/环境因子/冗余分析Key words
Jinshahe Reservior/phytoplankton/community structures/environmental factors/redundancy analyses引用本文复制引用
张云,马徐发,郭飞飞,李建柱,熊邦喜..湖北金沙河水库浮游植物群落结构及其与水环境因子的关系∗[J].湖泊科学,2015,(5):902-910,9.基金项目
湖泊水库养殖容量及生态增养殖技术研究与示范项目(201303056)资助 （201303056）
