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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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野外模拟扰动对太湖微囊藻群体大小的影响
杨桂军1, 钟春妮2, 秦伯强2, 王玉兵1, 王晓平1
1.江南大学环境与土木工程学院, 无锡 214122;2.中国科学院南京地理与湖泊研究所, 南京 210008
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.
Effects of in-situ simulative mixing on colony size of Micrcocystis in Lake Taihu
YANG Guijun1, ZHONG Chunni2, QIN Boqiang2, WANG Yubing1, WANG Xiaoping1
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
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
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