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附着物对菹草光合作用速率的抑制效应

张亚娟 刘存歧 张 晶 王军霞

张亚娟, 刘存歧, 张 晶, 王军霞. 附着物对菹草光合作用速率的抑制效应[J]. 环境科学研究, 2014, 27(1): 86-91.
引用本文: 张亚娟, 刘存歧, 张 晶, 王军霞. 附着物对菹草光合作用速率的抑制效应[J]. 环境科学研究, 2014, 27(1): 86-91.
ZHANG Ya-juan, LIU Cun-qi, ZHANG Jing, WANG Jun-xia. Inhibition Effects of Epiphyte on Photosynthesis Rate of Potamogeton crispus[J]. Research of Environmental Sciences, 2014, 27(1): 86-91.
Citation: ZHANG Ya-juan, LIU Cun-qi, ZHANG Jing, WANG Jun-xia. Inhibition Effects of Epiphyte on Photosynthesis Rate of Potamogeton crispus[J]. Research of Environmental Sciences, 2014, 27(1): 86-91.

附着物对菹草光合作用速率的抑制效应

基金项目: 国家水体污染控制与治理科技重大专项(2009ZX07209-008);河北省科技厅科学技术研究与发展计划项目(12273603)

Inhibition Effects of Epiphyte on Photosynthesis Rate of Potamogeton crispus

  • 摘要: 年5月对白洋淀不同营养水平的8个区域进行现场调查,研究了菹草(Potamogeton crispus)附着物的生物量(以w计)与营养盐水平的关系及其对菹草光合作用速率的影响. 结果表明,随着ρ(TN)、ρ(TP)的增加,菹草上附着物的生物量、w(Chla)和净初级生产力逐渐升高,在营养盐水平较高的王家寨〔ρ(TN)为6.074mg/L,ρ(TP)为0.161mg/L〕达到高峰,附着物的生物量为0.073~0.384mg/g,w(Chla)为0.019~0.112 mg/g,净初级生产力为0.007~0.154mg/(g·h). 附着物对菹草的光合作用速率产生明显的抑制作用,并且随着附着物生物量的增加,抑制作用明显增强,在营养水平较高的王家寨,抑制率可达72%;南刘庄和端村次之,抑制率分别为64%和55%;而在营养水平较低的光淀,抑制率仅为11%. 初步推测附着物对菹草的光合作用的影响可能源于附着物的遮荫作用.

     

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出版历程
  • 收稿日期:  2013-08-02
  • 修回日期:  2013-09-17
  • 刊出日期:  2014-01-25

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