淀山湖浮游植物数量消长及其与环境因子的关系  

Dynamic of Phytoplankton Abundance and the Relationship with Environmental Factors in Dianshan Lake,Shanghai

作　　者：王丽卿[1] 许莉[1] 卢子园[1] 施荣[1] 王岩[2] 季高华[1] 张瑞雷[1] 范志锋[1] 

机构地区：[1]上海海洋大学水产与生命学院,上海201306 [2]浙江大学动物科学学院,杭州310008

出　　处：《环境科学》2011年第10期2868-2874,共7页Environmental Science

基　　金：上海市科委重大项目(08DZ1203103);上海市重点学科建设项目(S30701)

摘　　要：根据2004年1月～2006年12月逐月测得的淀山湖浮游植物数量,以及水温、风力、透明度、氮磷营养盐、高锰酸盐指数等环境数据,运用Pearson相关分析和典范对应分析(CCA)对淀山湖浮游植物数量消长与环境因子的关系进行了探讨,以期为有效防治淀山湖藻类水华提供科学依据.相关分析表明,在已处于中-富营养及以上水平的淀山湖水体,浮游植物数量、蓝藻数量分别与水温(r=0.487、r=0.497)、pH(r=0.415、r=0.379)和高锰酸盐指数(r=0.460、r=0.436)呈显著正相关,与透明度(r=-0.382、r=-0.394)呈显著负相关;绿藻数量与磷酸盐(r=0.466)呈显著正相关;3 a内淀山湖浮游植物群落总数量与蓝藻数量的消长趋势和最高峰值出现规律几乎一致.CCA排序表明,水温、溶解氧、透明度和磷酸盐是浮游植物数量消长的主要影响因子.在淀山湖现有特定环境条件下,气象、水文等自然因素相比营养盐更能影响藻类水华暴发及其程度.During January 2004 to December 2006,the abundance of phytoplankton and environmental factors such as the water temperature,wind speed,transparency of water（SD）,TN,TP,pH,and permanganate index were monitored monthly in Dianshan Lake.The water quality of Dianshan Lake was in the mid-eutrophication state.The correlation analysis between phytoplankton community and environmental factors were performed.It indicated that the phytoplankton abundance,cyanobacteria abundance in Dianshan Lake were positively correlated with temperature（r=0.487、 r=0.497）,pH（r=0.415,r=0.379） and permanganate index（r=0.460,r=0.436）,and negatively correlated with SD（r=-0.382,r=-0.394）.Chlorophyta abundance in Dianshan Lake was positively correlated with PO3-4-P（r=0.466）.There was also a significant positive correlation between phytoplankton abundance and cyanobacteria abundance（r=0.970）.According to（CCA） ordination analysis,temperature,DO,SD and PO3-4-P were main factors affecting dynamic characteristics of phytoplankton community.The meteorological and hydrological factors were more important than nutrition concentration related to the water bloom in Dianshan Lake.

关 键 词：浮游植物数量消长 环境因子 淀山湖 相关性 典范对应分析 

分 类 号：X173[环境科学与工程—环境科学]