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水体营养盐质量浓度对苦草光合荧光特性的影响

蔡 炜 宋玉芝

蔡 炜, 宋玉芝. 水体营养盐质量浓度对苦草光合荧光特性的影响[J]. 环境科学研究, 2009, 22(8): 907-912.
引用本文: 蔡 炜, 宋玉芝. 水体营养盐质量浓度对苦草光合荧光特性的影响[J]. 环境科学研究, 2009, 22(8): 907-912.
CAI Wei, SONG Yu-zhi. Effect of Water Nutrient Concentration on Photosynthetic Fluorescence Characteristics of Vallisneria natans[J]. Research of Environmental Sciences, 2009, 22(8): 907-912.
Citation: CAI Wei, SONG Yu-zhi. Effect of Water Nutrient Concentration on Photosynthetic Fluorescence Characteristics of Vallisneria natans[J]. Research of Environmental Sciences, 2009, 22(8): 907-912.

水体营养盐质量浓度对苦草光合荧光特性的影响

基金项目: 中国科学院知识创新工程重要方向项目(KZCX2-YW-419);江苏省高校自然科学基金项目(07KJD610136)

Effect of Water Nutrient Concentration on Photosynthetic Fluorescence Characteristics of Vallisneria natans

  • 摘要: 通过室内培养,利用水下饱和脉冲荧光仪(Diving-PAM)研究了不同质量浓度的营养盐对苦草光合荧光特性的影响. 结果表明:①水体中N,P营养盐质量浓度的高低对苦草叶片PSⅡ和Fv/Fm影响不显著(P>0.05). ②在日变化过程中,各处理组苦草的ΔFv/Fm′均呈升—降—升的变化趋势,但方差分析显示,水体ρ(TN)和ρ(TP)变化不直接影响苦草的ΔFv/Fm′(P>0.05).③试验第4天各处理组的苦草叶片光响应能力大小依次为处理组B>处理组C>处理组D>处理组A;在苦草生长初期,质量浓度较高的营养盐可以提高苦草叶片的光响应能力和捕光能力,并可增强叶片的光合活性;从整个试验过程来说,分别是处理组B的ρ(TN)和处理组C的ρ(TP)更利于苦草的生长.

     

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出版历程
  • 收稿日期:  2008-12-07
  • 修回日期:  2009-02-03
  • 刊出日期:  2009-08-25

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