中文摘要：

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,0-6 h内的半饱和常数（Km）和最大吸收速率（Imax）分别为3.74μmol/L和1.43μmol/（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6μmol/L处理中达到最大生物量,15μmol/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15μmol/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6μmol/L和15μmol/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。

英文摘要：

The filamentous algae collected from the dominated zone of Chaetomorpha spp. in Rongcheng Swan Lake were incubated at different phosphorus （P） levels in the laboratory to explore the uptake kinetics and optimal P con-tent of bloom-forming macroalgae--Chaetomorpha. In addition, algal biomass, P contents in algal tissue and lake water were determinated regularly. The results showed that P uptake of Chaetomorpha can be well described by the Mih- caelsi-Menton equation, and the semi-saturation constant and maximum uptake rate were 3.74 μmol/L and 1.43 μmol/g/h, respectively. Chaetomorpha showed the superior affinity for P under eutrophication condition. The mac- roalgae reached up to the maximum biomass at the treatment of 6 μmol/L and the maximum P uptake rate at 15 μmol/ Lin water. But for 30 μmol/L, the relative growth rate and P uptake rate were not prominent for Chaetomorpha. The results suggest that Chaetomorpha have vigorous growth and higher absorptive capacity under the P concentrations of 6 μmol/L and 15 μmol/L, which allows its better performance in purifying waste water at low P concentration.