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应用层次聚类分析法确定海菜花氨氮耐受阈值

陈书琴 储昭升

陈书琴, 储昭升. 应用层次聚类分析法确定海菜花氨氮耐受阈值[J]. 环境科学研究, 2016, 29(4): 529-537.
引用本文: 陈书琴, 储昭升. 应用层次聚类分析法确定海菜花氨氮耐受阈值[J]. 环境科学研究, 2016, 29(4): 529-537.
CHEN Shuqin, CHU Zhaosheng. Application of Cluster Analysis to Determine Ammonia Threshold of Ottelia acuminata (Gagnep.) Dandy[J]. Research of Environmental Sciences, 2016, 29(4): 529-537.
Citation: CHEN Shuqin, CHU Zhaosheng. Application of Cluster Analysis to Determine Ammonia Threshold of Ottelia acuminata (Gagnep.) Dandy[J]. Research of Environmental Sciences, 2016, 29(4): 529-537.

应用层次聚类分析法确定海菜花氨氮耐受阈值

基金项目: 国家水体污染控制与治理科技重大专项(2012ZX07105-002)

Application of Cluster Analysis to Determine Ammonia Threshold of Ottelia acuminata (Gagnep.) Dandy

  • 摘要: 为确定海菜花对NH4+-N的Nmtor(耐受阈值),通过不同水平ρ(NH4+-N)下的模拟试验,获得了30 d内各试验组海菜花生化指标〔SOD(超氧化物歧化酶)活性、POD(过氧化物酶)活性、CAT(过氧化氢酶)活性及MDA(丙二醛)含量〕及生长指标〔鲜质量、最长根长、w(Chla)〕,运用层次聚类分析法确定了海菜花对NH4+-N的Nmtor,并运用传统方法对生长指标予以分析,以验证层次聚类分析法的有效性和可靠性. 结果表明:①对海菜花SOD活性、CAT活性及MDA含量的层次聚类分析得到的海菜花对NH4+-N的Nmtor皆为0~3.0 mg/L,而由POD活性分析得到的Nmtor为0~8.0 mg/L,交集为0~3.0 mg/L;②根据鲜质量相对增长率、根长相对增长率、w(Chla)得到的海菜花对NH4+-N的Nmtor分别为0~4.0、0~8.0及0~3.0 mg/L,交集为0~3.0 mg/L;③大多数生化指标层次聚类分析结果相同,而通过生长指标结合试验现象分析所得结果则各有差异,层次聚类分析结果是生长指标分析结果的真子集.

     

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出版历程
  • 收稿日期:  2015-11-09
  • 修回日期:  2016-01-03
  • 刊出日期:  2016-04-25

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