| 引用本文: | 杨桂军,钟春妮,秦伯强,王玉兵,王晓平.野外模拟扰动对太湖微囊藻群体大小的影响.湖泊科学,2017,29(2):363-368. DOI:10.18307/2017.0212 |
| YANG Guijun,ZHONG Chunni,QIN Boqiang,WANG Yubing,WANG Xiaoping.Effects of in-situ simulative mixing on colony size of Micrcocystis in Lake Taihu. J. Lake Sci.2017,29(2):363-368. DOI:10.18307/2017.0212 |
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| 摘要: |
| 风浪扰动是影响湖泊生态系统重要的环境因素之一.为了解风浪扰动对湖泊微囊藻群体大小的影响，在野外模拟了风浪扰动对太湖微囊藻群体大小的影响.结果表明，实验组模拟风浪连续扰动24 h，扰动结束时实验组和对照组微囊藻群体大小分别为68.38和12.56 μm，实验组和对照组微囊藻群体大小呈极显著差异；扰动结束时实验组和对照组微囊藻胞外多糖含量分别为1.49×10-6和1.26×10-6 mg/cell，二者差异显著.表明适当强度的风浪扰动短时间内能促使微囊藻群体显著增大，有助于人们对太湖微囊藻水华暴发机理的认识. |
| 关键词: 扰动 微囊藻 群体大小 太湖 模拟 |
| DOI：10.18307/2017.0212 |
| 分类号: |
| 基金项目:国家自然科学基金重点项目（41230744，40825004）和国家水体污染控制与治理科技重大专项（2012ZX07503-002）联合资助. |
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| Effects of in-situ simulative mixing on colony size of Micrcocystis in Lake Taihu |
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YANG Guijun1, ZHONG Chunni2, QIN Boqiang2, WANG Yubing1, WANG Xiaoping1
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1.Environment and Civil Engineering School, Jiangnan University, Wuxi 214122, P. R. China;2.Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, P. R. China
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| Abstract: |
| Mixing induced by wind-wave is one of the important factors in lake ecosystems. To understand the effects of mixing induced by wind-wave on colony size of Microcystis in lake, an in-situ experiment was conducted in Lake Taihu. The results showed that the colony size of Microcystis in treatments with wind wave for 24 h and in control was 68.38 and 12.56 μm, respectively. There was a significantly difference between them. The extracellular polysaccharides concentration of Microcystis in treatment with mixing continuing for 24 h was 1.49×10-6 mg/cell, which was significant higher than that in control(1.26×10-6 mg/cell). The results suggested that appropriate intensity of mixing induced by wind-wave can significantly enlarge the colony size of Microcystis in a short time. It will helpful to understand the mechanism of the Microcystis blooms in Lake Taihu. |
| Key words: Mixing Microcystis colony size Lake Taihu simulation |
