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引用本文:范帆,李文朝,柯凡.巢湖市水源地铜绿微囊藻(Microcystis aeruginosa)藻团粒径时空分布规律.湖泊科学,2013,25(2):213-220. DOI:10.18307/2013.0206
FAN Fan,LI Wenchao,KE Fan.Spatio-temporal distribution of Microcystis aeruginosa colony diameters in the water source region of Chaohu City. J. Lake Sci.2013,25(2):213-220. DOI:10.18307/2013.0206
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巢湖市水源地铜绿微囊藻(Microcystis aeruginosa)藻团粒径时空分布规律
范帆1, 李文朝2, 柯凡2
1.苏州科技学院, 苏州 215009;2.中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室, 南京 210008
摘要:
于2011年4-8月按月对巢湖市水源保护湖区不同水深及不同区位的铜绿微囊藻藻团粒径进行抽样调查,利用统计分析方法,归纳了巢湖水源保护湖区铜绿微囊藻藻团粒径的时空分布规律.湖区铜绿微囊藻藻团出现在4月中旬至5月中旬之间,S1与S2点位表层的藻团粒径与中、底层的均存在显著差异.粒径小于200μm的藻团在各水深的分布都比较均匀,没有明显的趋向性;粒径在200~800μm范围内的藻团更易集中在湖水表层;粒径超过800μm的藻团更易集中在湖水底层.各月份外湖区S2点位藻团粒径水平均高于内湖湾S1点位.由于易受短时气象条件的影响,藻团粒径按月时间尺度变化的规律性不强.藻团形状在整个空间分布上没有显著差异性,但随着季节变化,逐渐由狭长形向规则形变化.藻团粒径的分布范围表明,大型仿生式蓝藻清除设备的过滤筛网对水源湖区铜绿微囊藻藻团的理论过滤效率为99.81%.
关键词:  铜绿微囊藻  藻团粒径  形状因子  分布  巢湖
DOI:10.18307/2013.0206
分类号:
基金项目:国家水体污染控制与治理科技重大专项项目(2008ZX07103-005-03)资助
Spatio-temporal distribution of Microcystis aeruginosa colony diameters in the water source region of Chaohu City
FAN Fan1, LI Wenchao2, KE Fan2
1.Suzhou University of Science and Technology, Suzhou 215009, P.R.China;2.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, P.R.China
Abstract:
An investigation of Microcystis aeruginosa colony diameters in different water depths and locations was carried out monthly in the protection zone of water source region of Chaohu City from April to August,2011.The spatio-temporal distribution characteristics of the colony diameter were summarized using statistical analysis.The M.aeruginosa colony appeared between mid-April and mid-May,there was significant difference between the surface layer and lower-middle layers on colony diameters at both sampling sites of S1 and S2.Colonies with diameters less than 200 μm distributed vertically homogeneously in the water column,colonies with diameters between 200 μm and 800 μm tended to gather in the water surface,and colonies with diameters greater than 800 μm were apt to aggregate in the bottom layer.The level of colony diameter of outer sampling site (S2) was higher than that of inner sampling site (S1) in each month.Because the colony diameters were easily affected by the short-term meteorological condition, the variance of colony diameters didn't show conspicuously regular monthly.There was no significant difference in the spatial distribution of colony shape,while it shifted gradually from elongated to regular with seasons changing.The distribution range of colony diameters indicated that,in theory,99.81% of the total M.aeruginosa colonies can be filtered by the large bionic equipment for clearing cyanobacteria.
Key words:  Microcystis aeruginosa  colony diameter  shape factor  distribution  Lake Chaohu
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