太湖越冬蓝藻空间分布的初步研究  

Spatial variations of the over-winter cyanobacterial in Lake Taihu

作　　者：季健[1] 孔繁翔[1] 于洋[1] 张民[1] 阳振[1] 钱善勤[1] 吴晓东[1] 

机构地区：[1]中国科学院南京地理与湖泊研究所,南京210008

出　　处：《湖泊科学》2009年第4期490-494,共5页Journal of Lake Sciences

基　　金：江苏省太湖水污染治理科技专项(BK2007748);973计划"大中型浅水湖泊蓝藻水华暴发机理研究"(2008CB418000)联合资助

摘　　要：为确定2007-2008年冬季蓝藻在太湖各个湖区的分布及其变化规律,在冬季逐月对太湖主要湖区14个位点采集底泥和水样,应用荧光分析法测定样品中藻蓝素含量,以确定冬季太湖各个湖区的藻蓝素分布状况,比较冬季太湖各个湖区水体和底泥中蓝藻的分布差异.实验结果说明与夏季情况不同,相对于西南太湖水域,2007-2008年冬季北太湖水体和底泥中的蓝藻含量均较低,而西南湖区部分区域12月仍出现了蓝藻的聚集,底泥表面的藻蓝素含量也较高,说明调查期间,冬季越冬蓝藻主要分布于西太湖和南太湖.In order to investigate the spatial variations of the over-winter cyanobacteria in different areas of Lake Taihu, sediment and water samples were collected monthly in 14 sites in winters from 2007 to 2008. The phycocyanobilin concentration （PC） of samples was measured by the fluorometry analysis of pigments to confirm the difference of PC＇s spatial variations among three areas of Lake Taihu. The result shows that, differing from summer, the winter PC in both sediment and water from northern part was lower than western and southern part of Lake Taihu. Even in December, in some parts of western and southern areas the cyanobacteria was still blooming, and PC of surface sediment was also high. According to the result, it is clear that the over-winter eyanobacteria was mainly distributed in western and southern areas of Lake Taihu during the investigation winter seasons.

关 键 词：越冬蓝藻 藻蓝素 荧光分析法 空间分布 太湖 

分 类 号：X524[环境科学与工程—环境工程]