【摘 要】
:
为探究绿潮优势藻-硬毛藻对水体中磷的吸收动力学特征及其最适生长含量,在荣成天鹅湖硬毛藻暴发区域采集新鲜硬毛藻,设置不同磷含量水平进行室内模拟试验,定期监测藻的生长状
【机 构】
:
烟台大学海洋学院,山东烟台264005
论文部分内容阅读
为探究绿潮优势藻-硬毛藻对水体中磷的吸收动力学特征及其最适生长含量,在荣成天鹅湖硬毛藻暴发区域采集新鲜硬毛藻,设置不同磷含量水平进行室内模拟试验,定期监测藻的生长状况、藻体及水体中磷的含量变化.结果表明,硬毛藻对磷的吸收过程符合米氏方程,0~6h内的半饱和常数(Km)和最大吸收速率(Imax)分别为3.74 μmol/L和1.43 μmol/(g·h),在富营养化水平下表现出较高亲和力.硬毛藻在磷含量为6 μmol/L处理中达到最大生物量,15 μmol/L条件下藻体对磷的吸收速率最大,而在30μmol/L处理中藻体的相对生长速率及吸收速率均小于15 μmol/L处理.结果说明,硬毛藻对水体中磷具有较高富集能力,且在水体磷含量为6 μmol/L和15 μmol/L时,硬毛藻表现出较高生长力和较强吸收能力,适宜对低磷水平污水的净化.
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