铅锌尾矿人工湿地中PFU原生动物群落特性

应用水质-微型生物群落监测-PFU法，对位于广东省韶关地区的凡口铅锌矿废水处理系统中的原生动物群落进行研究．分析了该原生动物群落的结构和群集过程的特征，结合水质的理化参数对该处理系统效能进行评价．结果表明，该处理系统中，动物性鞭毛虫和腐生性纤毛虫为其原生动物群落的主要组成部分；随着采样点距排污口的距离延长，原生动物群落的种类数和密度明显增加；群落多样性指数也随之上升．通过对原生动物群落组成与污染物浓度的分析，显示群落多样性指数、种类数与各污染物的浓度存在显著的负相关．各采样点PFU原生动物群落群集过程也可反映出各样点环境间的差异．各采样点数据间的差异说明由于该处理系统中宽叶香蒲植物的作用，使废水中的大量颗粒性悬浮物得到沉降，重金属浓度也明显降低．促进了原生动物群落在一定程度的恢复．

The characteristics of PF unit protozoan communities in a man-made wetland system for treating waste water from a Pb/Zn mine

The protozoan communities in a man-made wetland system for treating waste water from a Pb/Zn mine were studied with PF unit method. The characteristics of protozoan conmmunity structures and their colonization were analyzed. Combined with physic-chemical data of water, the efficiency of the treatment system has been monitored using protozoan community data. Results show that zoomastigophora and ciliates are major components in the system. With the distance of the sampling sites away from discharge, the species number and abundance community are increased. The species numbers and biodiversity indices of protozoan communities exhibit negative correlation with the contents of pollutants in the water. The colonization of protozoan communities at different sites show environmental differences among the sites. Results also show, the suspended particles were deposited, and the protozoan communities were recovered in some degrees because of the cattail planting.