摘要
本文根据1985年2月至1986年2月对西湖浮游藻类所作的周年调查资料,就西湖浮游藻类的种类组成、数量变动及其与环境因子的关系作了研究。在20个测站260余号样品中,共鉴定出浮游藻类7门92属229种、变种和变型。优势种类为水华束丝藻、螺纽鞘丝藻、大螺旋藻、铜绿微囊藻、弯曲尖头藻、微小平裂藻、球胞鱼腥藻、克罗脆杆藻、连结脆杆藻和颗粒直链藻。西湖浮游藻类年均值为614×10~5个/升,并且以蓝藻占绝对优势,绿藻、硅藻次之。浮游藻类密度与透明度的(?)变化成负相关。
This paper deals with the results of a phytoplankton survey made at 20 sampling stations in the West Lake, during the period from February 1985 to February 1986 Altogether 204 species and varieties of phytoplankton were identified, which consist 37 sp. of Cyanophyta, 84 sp. and var. Chlorophyta, 11 sp. Euglenophyta, 57 sp. and var. Bacillariophyta, 8 sp. Chrysophyta, 4 sp. Pyrrophyta, and 3 sp. Cryptophyta.
The blue algae are the predominant group throughout the year in the lake. The average amount covers over 68.90% of the total algae population. The green algae and diatom are the secondary covering 15.85% and 12.54% respectively. The dominant species are Aphanizomenon flos-aquae, Raphidiopsis curvata, Microcystis flosaquae, M. aeruginosa, Merismopedia tenuissima, Lyngbya contorta, Spirulina major, Anabaena affinis, Fragilaria crotonensis, F. construens, Melosira granulatao Scenedesmus spp. and Dinobryon divergens are also abundant in Feb. 1986. The annual average number of phytoplankton cells is 614×10~5 cells/L. There is a tendency that number of cells increases from June to December. The outer lake area has the highest number in the West Lake.
出处
《海洋湖沼通报》
CSCD
北大核心
1989年第4期69-75,共7页
Transactions of Oceanology and Limnology
