Analysis of general additive model on the relationships between chlorophyll-a concentrations and environmental factors in Beihu Lake of Chongming Island
Author(s): LIU Jia, HUANG Qinghui, LI Jianhua
Pages: 1291-1295
Year: 2009 Issue: 12
Journal: China Environmental Science
Keyword: regression models; generalized additive model(GAM); chlorophyll-a; environmental factors; Beihu Lake of Chongming Island;
Abstract: 以崇明北湖为例,采用广义加性模型(GAM)对该湖的叶绿素a浓度与相关环境因子进行分析.结果表明,叶绿素a浓度与总氮、总磷和水温之间存在较好的非线性关系(P＜0.05),叶绿素a浓度与总磷之间的关系先为单调递增,当总磷浓度达到0.12mg/L时,变为单调递减;不同总氮浓度区间上,总氮对叶绿素a浓度的影响不同,氮浓度为0.6～1.8mg/L时,对叶绿素a浓度的影响不大;水温在24～26℃时,叶绿素a浓...
Pages: 1291-1295
Year: 2009 Issue: 12
Journal: China Environmental Science
Keyword: regression models; generalized additive model(GAM); chlorophyll-a; environmental factors; Beihu Lake of Chongming Island;
Abstract: 以崇明北湖为例,采用广义加性模型(GAM)对该湖的叶绿素a浓度与相关环境因子进行分析.结果表明,叶绿素a浓度与总氮、总磷和水温之间存在较好的非线性关系(P＜0.05),叶绿素a浓度与总磷之间的关系先为单调递增,当总磷浓度达到0.12mg/L时,变为单调递减;不同总氮浓度区间上,总氮对叶绿素a浓度的影响不同,氮浓度为0.6～1.8mg/L时,对叶绿素a浓度的影响不大;水温在24～26℃时,叶绿素a浓...
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