湖泊科学2019，Vol.31Issue(2)：440-448,9.DOI:10.18307/2019.0213
大型过水性湖泊——洪泽湖浮游植物群落结构及其水质生物评价
Community structure of phytoplankton and bioassessment of water quality in a large water-carrying lake, Lake Hongze
摘要
Abstract
Lake Hongze is an important storage lake for the Eastern route of the South-to-North Water Diversion Project. It plays an important role in climate regulation, flood control and drought protection, tourism and recreation, supply of water resources and aquatic products. In order to understand its phytoplankton community structure and aquatic health status, this study conducted monthly field survey for phytoplankton in Lake Hongze from August 2015 to July 2016. A total of 147 phytoplankton species were identified, belonging to 8 phyla, of which Chlorophyta, Diatomophyta, Cyanophyta were the most abundant. The annual average abundance of phytoplankton was 5.35×107±4.67×107 cells/L, and the average biomass was 14.24±8.52 mg/L. There was obvious spatial and temporal difference in the distribution of phytoplankton in Lake Hongze. In terms of spatial pattern, phytoplankton in Lake Chengzihu had the highest cell abundance, dominated by Chlorophyta; the Lihewa Lake had the second highest abundance and dominated by the Cyanophyta; the centre and south lake region had low phytoplankton abundance, and Chlorophyta or Cyanophyta was dominant in the most sites. In terms of seasonal pattern, phytoplankton were abundant in summer with Cyanophyta dominant. In winter, phytoplankton abundance was low and diatoms were dominant. Compared with the survey in the 1980 s, the number of phytoplankton species (genera) had declined in recent years, and the richness, evenness, etc. had also been lower than those of earlier investigations. The results of bioassessment of phytoplankton showed that Lake Hongze was suffered β-mesosaprobic zone pollution, and its eutrophication level was lower than that of Lake Luoma, but higher than Huaihe River and Lake Gaoyou.关键词
洪泽湖/浮游植物/群落结构/水质生物评价Key words
Lake Hongze/phytoplankton/community structure/bioassessment of water quality引用本文复制引用
吴天浩,刘劲松,邓建明,戴小琳,唐荣桂,彭凯,邹伟,蔡永久,龚志军..大型过水性湖泊——洪泽湖浮游植物群落结构及其水质生物评价[J].湖泊科学,2019,31(2):440-448,9.基金项目
国家自然科学基金项目(41671110,31270505) （41671110,31270505）
江苏省水利科技项目(2018039)联合资助 （2018039）
