利用PFU原生动物群落监测北京排污河净化效能的研究  

A STUDY ON APPLYING PFU PROTOZOAN COMMUNITY TO MONITOR THE SELF-PURIFICATION EFFECTIVENESS OF THE BEIJING WASTEWATER CANAL

作　　者：许木启[1] 

机构地区：[1]中国科学院动物研究所

出　　处：《生态学报》1991年第1期80-85,共6页Acta Ecologica Sinica

摘　　要：应用PFU方法采集微型生物群落,监测北京排污河不同河段污染压迫和净化效能。五次野外生态群集试验,共采集到60种原生动物。6个采样站微型生物种类组成和数量分布存在明显的时空差异。原生动物对不同河段水质变化的反映,可用群集速度来表示。无论野外生态群集试验和室内原污水的毒性试验,还是群集过程中S_(e q)、G、t90％三个功能参数的分析,及其与水质化验数据比较,其结果均基本一致。PFU方法较准确地反映了北京排污河水体的生态效应和净化过程。The Beijing Wastewater Canal is a main one for discharge of wastewa-ter from Beijing city. It receives a great deal of domestic sewage and industrial Wastewater from urban districts.To monitor the toxic stress of the Wastewater and the effectiveness of self-purification at various sections of the water body,the artificial substrate, polyurethane foam unit (PFU) method developed by Cairns(1969)was taken for colonizing microbial community in August, 1984. Examination of the PFU samples revealed a total of 60 protozoan species in 6 sampling stations. Field and laboratory experiments of Wastewater effects on the protozoan colonization rate were carried out for five times and the contents of T P, T N, NH4-N, BOD5 and COD were analysed as well. According to the MacArthur-Wilson equilibrium model, three function parameters(Seq, G, t90%) were brought forward in the field ecological tests.The results from above investigation were found to be coincident with the degrees of pollution and the process of self-purification in the canal. An analysis of the structural and function parameters on the PFU protozoan community indicated that the self-purification of the Beijing Wastewater Canal was effectual. At the upstream sampling stations where were heavily polluted, the colonization rates of the protozoan community are lower than at the downstream sampling stations where the process of self-phurification speeds up. Terefore, it is a good method to predict the effects of discharge of Wastewater on the aquatic ecosystem with the PFU protozoan community tests.

关 键 词：原生动物群落 PFU法 群集速度 

分 类 号：Q178.14[生物学—水生生物学]