摘要
为了解近年来滇池湖泊生态系统状况及变化,设立7个采样点,调查了滇池草海及外海浮游生物种类组成及数量特征。共鉴定出浮游植物7门27科120种;原生动物26种;原腔动物15种;节肢动物22种。结果表明,草海水域浮游动物个体数为3 819±918个/L,外海为18 924±4419个/L,浮游植物在草海水域中均数为(2.4±0.589)×107/L,外海为(2.548±0.244)×107/L,均低于以往报道结果,但浮游植物种类出现少许回升。发现滇池草海浮游动物数量低于外海,外海中东部浮游动物数量显著低于西南部。浮游生物种类和密度显示滇池水质仍然处于较差状态。
Through the survey on the phytoplankton and zooplankton at 7 sampling sites, the species composition and its characteristics was analyzed in order to understand the ecological situation of Dianchi Lake and its change. 120 species of phytoplankton were identified which belong to 27 families and 7 Phylums. 26 species of Protozoa , 15 species of Aschelminthes, and 22 species of Arthropoda. The Dianchi Lake be devided into two parts, namely the Grass Lake and the Out lake. The average abundance of zooplankton were 3 819±918/L and 18 924±4 419/L in Grass Lake and Out Lake respectively, and that of phytoplankton were (2. 4 ±0. 589 ) ×107/L and (2. 548 ± 0. 244) ×107/L respectively. Compared with previous reports, the numbers of plankton in this study were less, but phytoplankton had a tendency of recovery, the number of zooplankton in the east part was higher than that in south-west part. In general, the water quality of Dianchi Lake was still in a ooor condition.
出处
《西部林业科学》
CAS
2016年第1期74-80,共7页
Journal of West China Forestry Science
关键词
滇池
浮游生物
浮游植物
浮游动物
物种
污染
Dianchi Lake
plankton
phytoplankton
zooplankton
species
pollution