广西科学2016，Vol.23Issue(2)：150-155,6.
龙江河春季浮游植物群落特征及其富营养化评价
Phytoplankton Community Structure and Eutrophication of Longj iang River in Spring
摘要
Abstract
Objective]To investigating the reason of overgrowth of Pistia stratiotes and Eichhornia crassipes in the spring of 2013,phytoplanktons were investigated in Lalang reser-voir which located in upstream of Longjiang River.[Methods]Diversity indices (Shannon-Wie-ner diversity index and Pielou)and trophic state index were used to assess the trophic state of the Longjiang River.[Results]Totally,7 phyla,42 genera and 56 species of phytoplankton were identified,among them Bacillariophyta and Chlorophyta were the dominant taxa,and their rela-tive abundances were 37.50% and 25.00%,respectively.However,the most abundant taxa was Peridiniopsis Lemmermann,and its cell density ranged from 0.12×106 to 5.13×106 cells· L-1 .For example,the relative abundance of Pyrrophyta in Nuomitan station was 9 1 .7 6%,indi-cating the dinoflagellate bloom.The biodiversity analysis showed that Shannon-Wiener diversity index ranged from 0.68 to 2.99,Pielou from 0. 18 to 0.48,and the integrated trophic state index from 42.10 to 53.60.[Conclusion]In summary, the results indicated that the water quality of Longjiang River was classified as mesotrophic and eutrophic level.关键词
龙江河/富营养化/浮游植物/营养状态Key words
Longj iang River/eutrophication/phy-toplankton/trophic state分类
资源环境引用本文复制引用
夏新建,邓渠成,韦锋,许桂苹,王晓飞,邓超冰..龙江河春季浮游植物群落特征及其富营养化评价[J].广西科学,2016,23(2):150-155,6.基金项目
广西自然科学基金项目“西江流域水环境重金属污染机制与调控”（2013GXNSFEA053001）资助。 （）
