陶志英 陈文静 余智杰 张燕萍 王昌来 朱桂根 李左宏 李艳芳

摘要 2013年5月—2014年3月在太泊湖布点，隔月进行1次采样，监测分析该湖浮游植物群落结构的时空变化和水质情况。结果表明，在该湖中共鉴定浮游植物79种，隶属于7门，主要为绿藻、蓝藻、硅藻；浮游植物细胞丰度在夏、秋、冬季较高，且逐渐增大，春季最低，空间分布上有差异；其优势种集中在绿藻门，藻类污染指数值为3的小球藻一直是优势种，9月优势种种类最多，绿藻商为12；湖水富趋于重富营养化状态。对高丰度藻类和环境因子进行相关性分析发现，蓝藻门和绿藻门呈显著正相关，蓝藻门和绿藻门的细胞丰度与总硬度呈极显著负相关，与钙呈显著负相关，黄藻门的细胞丰度与镁呈显著负相关；各藻类细胞丰度和环境因子典范对应分析（CCA）表明，不同藻类受不同环境因子影响。

关键词 太泊湖；浮游植物；富营养化；相关性分析；CCA分析

中图分类号 X173 文献标识码 A 文章编号 0517-6611（2017）13-0063-05

Correlation Analysis of Phytoplankton Community Structure and Environmental Factors in Taibo Lake

TAO Zhi-ying，CHEN Wen-jing*，YU Zhi-jie et al

（Jiangxi Fisheries Research Institute， Nanchang， Jiangxi 330039）

Abstract During the period from May 2013 to March 2014， layout of sampling points in the lake， and sampling once every other month， the spatial and temporal variations of phytoplankton community structure and water quality were monitored and analyzed. The results showed that 79 species of phytoplankton were identified in this lake，its belongs to 7 phyla， with the main dominance of Green algae， Cyanobacteria and Diatoms；cell abundance of phytoplankton in spring， summer， autumn and winter was higher， and gradually increased， spring was the lowest， there were differences in the spatial distribution；its dominant species concentration in Chlorophyta （green algae）， algae pollution index value for 3 of the Chlorella has been the dominant species， most types of the dominant species in September， green algae provider was 12；Lake water was eutrophication trend heavy eutrophication status. Correlation analysis was carried out on the high abundance of algae and environmental factors ， it was found that the Cyanophyta and Chlorophyta had a significant positive correlation， the cellular abundance of Cyanophyta and Chlorophyta and total hardness had a extremely significantly negative correlation，and calcium had a significant negative correlation， the cellular abundance of Xanthophyta and magnesium was significantly negatively correlated；the CCA analysis of the cell abundance of Phytoplankton and environmental factors. The results showed that different algae was affected by different environmental factors.

Key words Taibo lake；Phytoplankton；Eutrophication；Correlation analysis；CCA analysis

浮游植物是水體中重要的初级生产者，能吸收水体中的氮、磷等营养元素，并通过光合作用释放出氧气，是整个水生态系统物质循环和能量流动的基础[1]。它是滤食性鱼类的天然饵料，为水质评价提供了生物学参数[2]。

太泊湖是江西省彭泽县境内第一大湖，属长江干流下游上段右岸水系，是因地质运动而自然演变形成的河迹洼地型淡水湖泊，其水面宽阔，光照充足，雨量充沛，是该省重要的商品鱼生产基地，著名的彭泽鲫就产于该湖；……