期刊论文

中文

生态科学

1008-8873

2015

34

5

77-83

10.14108/j.cnki.1008-8873.2015.05.012

2012CB417004:国家重点基础研究发展计划（973计划）

本校为第一机构

通过室内模拟实验, 研究不同扰动条件对惠氏微囊藻(Microcystis wesenbegii)、四尾栅藻(Scenedesmus quadricauda)、菱形藻(Nitzschia sp.)三种藻在对数时期生长的影响。实验结果表明: 在pH≤8.3碳源充足的时候, 扰动本身对蓝藻和绿藻生长影响不大, 仅在扰动速度为0.1 m·s~(-1)的时候有微弱的促进作用, 对硅藻在0.2 m·s~(-1)和0.5 m·s~(-1)时有较大的促进作用。在pH>8.3碳源不足的时候, 扰动速度为0.5 m·s~(-1)扰动下三种藻生长均加快, 增加碳源是扰动有利于藻类生长的原因之一。水动力因素本身对蓝藻生长的影响不大, 而水动力降低引起的其他因素改变可能是导致蓝藻水华暴发的主要诱因。

Through indoor simulated experiment, the effect of different disturbance conditions on Microcystis wesenbegii, Scenedesmus quadricauda, Nitzschia sp. in logarithmic growth period was investigated. The results showed that under the condition of p H ≤ 8.3 and sufficient carbon source, the disturbance itself had little effect on the growth of blue-green algae and green algae, while weak enhancement was found only in the disturbance velocity of 0.1 m·s–1; when the disturbance velocity was at 0.2 m·s–1 and 0.5 m·s–1, it showed a great enhance...