广州古廖涌生物修复的指示藻类

 利用氧化塘—河道原位生物修复的方法对广州市古廖涌河道黑臭水体进行治理，并对治理前、氧化塘处理、原位生物修复河段上游和下游四个不同治理阶段的水体进行水质和浮游藻类的监测，试图通过对监测结果的对比分析，确定反应河涌黑臭水体不同治理程度的藻类生态结构特征和指示种。研究结果表明，在不同的修复阶段，水体COD、BOD、氮磷等污染物逐步得到去除，透明度大大提高；浮游藻类群落结构发生显著变化，优势藻由蓝藻转变为裸藻，藻类生物多样性和均匀度增加；种群结构和优势种也发生演变，耐重有机污染种逐步减少或消失，耐中–轻污染种出现；研究还确定了可作为城市污染河涌水体修复的指示藻类。

Indicator Algae in Bio-remediation of Guliao Polluted River in Guangzhou

A composite bio-remediation technology of oxidation pond and biological repair technology in river course was employed in the polluted Guliao River of Guangzhou. Monitors of water quality and planktonic algae were conducted to compare population composition and indicator species of algae at four restoration stages of the river: original water, in oxidation pond, upstream and downstream of the restored river. Results showed that COD,BOD,nitrogen and phosphorus in the river water were gradually removed during the remediation process, the diaphaneity increased greatly, and therefore, water quality improved significantly. In the restored water, the predominant algae changed from Cyanophyta to Euglenophyta, the biodiversity and evenness increased, and the algae population composition changed greatly, eg. species tolerant to organic pollution decreased or died away, while species of clean water increased. In addition, indicator algae suitable for remediation of polluted urban river water was found out in this researched.