| 摘要: |
| 为探讨石油烃对海洋生物的毒性效应机制, 并对海洋石油污染的预防和治理提供理论依据, 本文研究了0#柴油石油烃对3 种海洋微藻生长的影响。实验结果表明石油烃对微藻有“低促高抑”的现象: 当石油烃质量浓度>10 mg/L 时, 抑制青岛大扁藻的生长; 当石油烃质量浓度>30 mg/L 时, 则抑制三角褐指藻的生长; 抑制聚球藻的石油烃质量浓度范围为>20 mg/L, 且质量浓度越大抑制效果越明显。但低质量浓度石油烃污染物则易促进其生长。在Logistic 生长模型的基础上, 结合Lorentz 方程和Exponential 方程, 引入石油烃污染物质量浓度项, 建立石油烃污染物条件下的海洋浮游植物生长的模型。Lorentz 方程可描述0#柴油烃对浮游植物生长速率参数的影响, Exponential 方程可描述0#柴油烃对浮游植物生物量的影响, 实验验证该模型是合理的。 |
| 关键词: 石油烃 青岛大扁藻(Platymonas helgolandica Kylin var. tsingtaoensis) 三角褐指藻(Phaeodactylum tricornutum Bohlin) 聚球藻(Synechococcus sp.) 生长动力学 |
| DOI：10.11759/hykx20130830004 |
| 分类号: |
| 基金项目:山东省自然科学基金项目(ZR2009BL030); 山东省海洋生态修复重点实验室(山东省海洋水产研究所) 开放基金资助项目(201212) |
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| Growth kinetics of 3 species of microalgae treated with petroleum hydrocarbon |
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| Abstract: |
| It is aimed to find out toxic effect of petroleum hydrocarbon on marine organism, and provide theoretical basis for prevention and control. We tested effects of 0# petroleum hydrocarbon on growth of three species of microalgae. The results show that the effective concentration, at which petroleum hydrocarbon can inhibit growth of Platymonas helgolandica, Phaeodactylum tricornutum and Synechococcus is higher than 10 mg/L, 30 mg/L, and 20 mg/L, respectively. Moreover the higher the concentration is, the stronger the inhibition is. However, lower doses of petroleum hydrocarbon can promote growth of microalgae. A growth model based on the effects of petroleum hydrocarbon on growth of microalgae, was developed by incorporating Logistic model with Lorentz and Exponential equation. Lorentz equation can describe effects of 0# petroleum hydrocarbon on growth rate of phytoplankton, while Exponential equation suggests that on biomass. It is demonstrated that the growth model showed good fitting for experimental data. |
| Key words: Petroleum hydrocarbon Platymonas helgolandica Phaeodactylum tricornutum Synechococcus Growth kinetics |
