阳澄湖浮游植物群落结构与环境因子的典范对应研究

2013年4月（春季）和10月（秋季）对阳澄湖6个点位的浮游植物群落结构进行了调查,共发现浮游植物8门91属184种,其中硅藻门为阳澄湖的主要优势门类,硅藻门中的小环藻属占主要优势种.对六个点位的浮游植物结构组成与9个环境因子的关系进行典范对应分析,结果表明东湖南与中湖北的浮游植物群落结构与其他4个点位差异性较大,pH、高锰酸盐指数、总磷、氨氮、水温是影响浮游植物分布的主要环境因子.

Canonical Correspondence Analysis Between Phytoplankton Community and Environmental Factors in Yangcheng Lake

Field investigations on phytoplankton community were carried out in April（spring） and October（autumn） 2013 in Yangcheng Lake of Suzhou. Results indicated that there were 184 species, 91 genus,8 phylum phytoplankton, which is mainly composed of the Bacillariophyta. The relationship among 184 species of phytoplankton and 9 environmental factors from 6 sampling sites was analyzed by Canonical Correspondence Analysis. The results showed the phytoplankton communities of Donghunan and Zhonghubei were different significantly from Other sites. Furthermore, pH, permanganate indexes, total phosphorus, ammonia nitrogen and water temperature were the main environmental factors correlated with the composition of phytoplankton community.