摘要
为掌握太湖竺山湾湖泊缓冲带区域内湿地浮游植物的群落结构及水质状况,于2012年9月至2013年8月进行了4次现场调查,共发现浮游植物112种,其中,绿藻门种类最多,为43种,占浮游植物总种数的38.4%,其次是硅藻门,共40种,占浮游植物总种数的35.7%。浮游植物数量变化在5360.0×10^4-54627.4×10^4cells/L之间,从季节变化上来看,春季〉秋季〉冬季〉夏季。浮游植物季节相似性指数在0.37-0.71之间,夏季和秋季之间的相似性指数最小,春季和夏季之间的相似性指数最大。优势度分析显示,竺山湾湖泊缓冲带区域内湿地各个季节的浮游植物优势种都在3种以上,优势种种数较多且优势度不高,变化范围在0.02-0.06之间。竺山湾湖泊缓冲带内湿地浮游植物多样性指数和均匀度指数分别在0.85-1.58和0.14-0.29之间,表明调查期间竺山湾湖泊缓冲带内湿地浮游植物分布不均匀,群落结构简单。基于绿藻指数及生物多样性指数对竺山湾湖泊缓冲带内湿地的水质综合评价表明,研究区域可能属于重富营养型,冬季为重度污染,春夏秋为中度污染。
To study the community structure of phytoplankton and assess the water quality in the wet- lands of lake buffer zone of Zhushan Bay, Taihu Lake, four investigations were carried out from September 2012 to August 2013. The results showed that a total of 112 species were found in the study area. Chlorophyta was the most dominant, with 43 species, accounting for 38.4% of the total phytoplankton species, followed by Bacillariophyta, with 40 species, accounting for 35.7% of the total phytoplankton species. The quantity of phytoplankton ranged from 5360.0 104 to 54627.4 104cells/L, with seasonal changing trend of spring〉autumn〉winter〉summer. The similarity indexes of phytoplankton ranged from 0.37 to 0.71, with the lowest value between summer and autumn and the highest value between spring and summer. The analysis of dominance indexes showed that there were more than 3 dominant species in each season and the indexes ranged from 0.02 to 0.06. The diversity indexes ranged from 0.85 to 1.58 and the evenness indexes ranged from 0. 14 to 0.29, respectively, which indicated that the phytoplankton community structure in the present study was uneven, and the community structures was simple. Chlorophyta index and biodiversity indexes were used to evaluate the water quality of the wetlands of lake buffer zone of Zhushan Bay, Taihu Lake. The results showed that the study area was under heavy eutrophication. The water quality might be heavily polluted in winter and moderately polluted in spring, summer and autumn.
出处
《海洋湖沼通报》
CSCD
北大核心
2014年第4期41-51,共11页
Transactions of Oceanology and Limnology
基金
国家水体污染控制与治理科技重大专项(2012ZX07101-009)资助
关键词
浮游植物
湖泊缓冲带
湿地
竺山湾
太湖
phytoplankton
lake buffer zone
wetlands
Zhushan Bay
Taihu Lake
