生态环境学报Issue(11)：1814-1820,7.
太湖浮游植物群落结构及其与水质指标间的关系
Structure of Phytoplankton Community and Relationship between Phytoplankton Community and Water Quality in Taihu Lake
摘要
Abstract
To research the structure of phytoplankton community and relationship between phytoplankton community and water quality in Taihu Lake, phytoplankton community structure and water quality indicators (temperature, transparency, pH value, dissolved oxygen, conductivity, total nitrogen, total phosphorus, ammonia, high manganese on permanganate index, chemical oxygen demand, fluoride, biological oxygen demand, nitrate, nitrite, phosphate solubility and chlorophyll a) were monthly investigated at seven sites in Taihu Lake between January and December of 2013 in our study. Meanwhile, Pearson’s correlations between phytoplankton communities and environmental variables were used to find the factors that influenced the distribution of phytoplankton community. The results found that there were 124 species of phytoplankton, including 30 taxa Cyanophyta, 47 kinds of Bacillariophyta, 34 species Chlorophyta, 3 Cryptophyta, 6 Euglenophyta, 4 Dinoflagellate; as an absolute dominant species, dominance of Microcystis spp. was 80.8 %. From space, phytoplankton density in Gonghu was highest among the seven sites. Diversity of phytoplankton community was lower than other sites. Meanwhile, density percentage of Microcystis spp. in Gonghu was 90.1%, far higher than other sites. From the time point of view, December was when the density of phytoplankton community in Taihu Lake was highest, followed by June. The principal pollutant was total nitrogen, secondly total phosphorus, thirdly chemical oxygen demand. Concentration of pollutants in West Taihu was highest in our study. Through correlation analysis of phytoplankton community and water quality, it showed that water temperature, transparency, total nitrogen, chemical oxygen demand and chlorophyll a were main factors that influenced phytoplankton community structure in Taihu Lake. Controlling water pollutant emissions and restoring ecological function should be an effective method to manage cyanobacteria bloom in Taihu Lake. Meanwhile, enhancing times of algae monitoring in winter will be to prevent outbreak of algae in Taihu Lake.关键词
太湖/浮游植物群落/物种多样性/影响因子Key words
Taihu Lake/phytoplankton community/species diversity/factor分类
资源环境引用本文复制引用
李娣,李旭文,牛志春,王霞,师伟,于红霞..太湖浮游植物群落结构及其与水质指标间的关系[J].生态环境学报,2014,(11):1814-1820,7.基金项目
国家水体污染控制与治理科技重大专项(2013ZX07502001-005) （2013ZX07502001-005）
