华东师范大学学报(自然科学版) ›› 2012, Vol. 2012 ›› Issue (1): 11-18.

• 环境工程 地理学 • 上一篇    下一篇

不同氮磷浓度对铜绿微囊藻生长特性的影响

郑晓宇1， 金 妍1， 任翔宇1， 顾詠洁1， 朱永青2， 杨漪帆2   

  1. 1. 华东师范大学 城市化生态过程与生态恢复重点实验室，上海 200062；
    2. 上海市环境科学研究院，上海 200233
  • 收稿日期:2011-01-01 修回日期:2011-04-01 出版日期:2012-01-25 发布日期:2012-01-26

Influence of nitrogen and phosphorus concentrations on the growth characteristics of Microcystis aeruginosa

ZHENG Xiao-yu 1, JIN Yan 1, REN Xiang-yu 1, GU Yong-jie 1,ZHU Yong-qing 2, YANG yi-fan 2   

  1. 1. Shanghai Key Laboratory for Urban Ecology and Sustainability, East China Normal University, Shanghai 200062, China;
    2. Shanghai Academy of Environmental Sciences,Shanghai 200233, China
  • Received:2011-01-01 Revised:2011-04-01 Online:2012-01-25 Published:2012-01-26

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摘要： 在不同氮（N）、磷（P）初始浓度的培养液中对铜绿微囊藻（Microcystis aeruginosa）进行培养.利用Monod方程分别计算铜绿微囊藻对氮、磷的半饱和常数（Ks）.结果表明：以单一元素为限制底物时，满足铜绿微囊藻正常生长的氮浓度大于4.0 mg·L-1，磷浓度大于0.50 mg·L-1；铜绿微囊藻最适生长的氮浓度范围为32.0~64.0 mg·L-1，磷浓度范围为1.0~1.50 mg·L-1；以磷为限制底物时的半饱和常数Ksp远远小于以氮为限制底物时的半饱和常数KsN(KsN>Ksp)，说明铜绿微囊藻对磷的亲和性高于氮.与铜绿微囊藻最大现存量（X）呈高度线性相关时的氮浓度范围为0.20~64.0 mg·L-1，磷浓度范围为0.02~1.50 mg·L-1.铜绿微囊藻比增长速率（μ）连续增加的氮浓度范围为0.20~1.60 mg·L-1，磷浓度范围为0.02~0.50 mg·L-1.

关键词: 铜绿微囊藻, 氮, 磷, 生长特性

Abstract: Microystis aeruginosa was cultured in solutions of different initial nitrogen and phosphorus concentrations. The semi-saturation constants (Ks) of Microystis aeruginosa to P and N were calculated respectively by using the Monod equation. The results show that the Microystis aeruginosa grew normally when the concentrations of N and P were greater than 4.0 mg·L-1 and mg·L-1 respectively. The optimum concentration ranges of N and P for Microystis aeruginosa growth were 32.0~64.0 mg·L-1 and 1.0~1.50 mg·L-1 respectively. KsN is higher than Ksp,  which indicates that the affinity of P to Microystis aeruginosa is higher than N. When the concentration ranges of N and P were 0.20~64.0 mg·L-1 and 0.02~1.50 mg·L-1 respectively，they had high liner correlation with the largest extent quantity of Microystis aeruginosa. The special growth rate increases continuously when the concentration ranges of N and P are 0.20~1.60 mg·L-1 and 0.02~0.50 mg·L-1 respectively.

Key words: Microcystis aeruginosa, nitrogen, phosphorus, growth characteristics

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