长江流域资源与环境 >> 2013, Vol. 21 >> Issue (Z): 46-.

• 生态环境 • 上一篇    下一篇

 三种水华藻类在振荡条件下的磷吸收动力学及生长预测研究

陈文捷| 沈宏| 庞兴红| 吕丽媛| 谢平   

  1. (1.华中农业大学水产学院|湖北 武汉 430074; 2.中国科学院水生生物研究所|湖北 武汉 430072)
  • 出版日期:2013-09-20

COMPARATIVE STUDIES ON PHOSPHORUS UPTAKE KINETICS AND GROWTH PREDICTION OF THREE BLOOMFORMING ALGAE UNDER TURBULENCE

CHEN Wenjie| SHEN Hong2| PANG Xinghong2| LV Liyuan1| XIE Ping1,2   

  1. (1.College of Fishers,Huazhong Agricultural University|Wuhan 430074,China;2.Institute of Hydrobiology,Chinese Academy of Sciences,Wuhan 430072,China
  • Online:2013-09-20

摘要:

为了探讨水动力对不同水华发生和演替的影响,以3株常见水华藻类,铜绿微囊藻(蓝藻)、普通小球藻(绿藻)和汉氏冠盘藻(硅藻)为材料,研究了不同流速条件下(0,038 m/s)3种水华藻类的磷吸收动力学行为,并根据磷吸收动力学参数对3种水华的生长进行预测。结果表明,振荡(038 m/s)能显著降低铜绿微囊藻(Microcystis aeruginosa)和汉氏冠盘藻(Stephanodiscus hantzschii)的磷吸收速率和亲和力(p<005),但显著提高普通小球藻(Chlorella vulga)的磷吸收速率和亲和力(p<005)。根据Monod模型预测,水体扰动能不同程度的抑制铜绿微囊藻和汉氏冠盘藻的生长而促进普通小球藻的生长。3种水华藻对扰动条件的不同生理响应可能是导致河流中优势藻规律性分布与演替的原因之一。因此随着河流水体流速的减慢和磷浓度的升高,可能出现硅藻水华向蓝绿藻水华演替的风险

Abstract:

In order to explore the effect of hydrological regimes on algae bloom and succession,3 species from different phylum,Microcystis aeruginosa (Cyanophyta),Chlorella vulga (Chlorophyta) and Stephanodiscus hantzschii (Bacillariophyta),were used in present study to compare the effects of turbulent conditions (0 and 38 m/s) on the phosphorus (P) uptake kinetics in different bloomforming algae.The growth rates of three algae were predicted under standing and turbulent conditions according to their P uptake kinetic parameters.Our result showed that hydrodynamic can significantly affect the growth of algae by changing the P uptake rates and hydrodynamic impacted different algae differently.Compared to standing condition,the P uptake rates and P affinity of M.aeruginosa and S.hantzschii under turbulence declined markedly(p<005),however,the P uptake rates and P affinity of C.vulga increased significantly(p<005).Based on Monod model,the turbulence could inhibit the growth of M.aeruginosa and S.hantzschii in different degrees but boost the growth of C.vulga.Our results reveal that the difference characteristic of phosphorus uptake kinetics in three bloomforming algae under turbulent and standing conditions might result in distribution and succession of algae in rivers.With the increase of P concentration and decrease of flowing rate in rivers,the risk of blooms from diatoms to cyanobacteria will be increased.〖HJ1〗〖HJ〗

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] 刘爱霞,刘正军,王 静. 基于PCA变换和神经元网络分类方法的中国森林制图研究[J]. 长江流域资源与环境, 2006, 15(1): 19 -24 .
[2] 张晓平,樊 杰. 长江上游生态脆弱区生态屏障建设与产业发展战略研究——以昭通市为例[J]. 长江流域资源与环境, 2006, 15(3): 310 -314 .
[3] 李书恒, 郭 伟, 施晓冬, 朱大奎. 舟山群岛海洋环境资源及其开发利用[J]. 长江流域资源与环境, 2007, 16(4): 425 .
[4] 叶 浩,濮励杰,张 健. 我国粮食主产区耕地产出效率研究[J]. 长江流域资源与环境, 2008, 17(4): 584 .
[5] 张智, 张显忠. 三峡库区泥沙对不同初始浓度硅藻生长影响[J]. 长江流域资源与环境, 2006, 15(Sup1): 116 -119 .
[6] 余 斌,李星明,曾菊新. 武汉城市圈产业发展的空间优化[J]. 长江流域资源与环境, 2007, 16(5): 560 .
[7] 蔡述明, 殷鸿福, 杜 耘, 吴胜军, 李 涛. 南水北调中线工程与汉江中下游地区可持续发展[J]. 长江流域资源与环境, 2005, 14(4): 409 -413 .
[8] 程冬兵, 张平仓, 赵健, 蔡崇法. 三峡库区不同水保措施下紫色土水分特征曲线特征及模型拟合[J]. 长江流域资源与环境, 2009, 18(11): 1045 .
[9] 卢士强, 林卫青, 顾玉亮, 李巍, 张宏伟, 丁玲. 潮汐河口水库型饮用水水源地保护区划分技术方法[J]. 长江流域资源与环境, 2010, 19(2): 146 .
[10] 杨振. 火电燃料消费过程对资源环境的影响评估[J]. 长江流域资源与环境, 2011, 20(2): 239 .