广州市区人工湖泊PFU原生动物群落群集过程及其对水质差异的指示作用

应用PFU法(GB／T12990-91)对广州市区主要湖泊——流花湖、荔湾湖和麓湖的原生动物群落与水质进行研究．结果表明：用PFU法所测定和计算的原生动物群集的种类数、植鞭虫指数、群集参数(SeqG、T90%)、群落多样性指数d和群落污染值(CPV)等都能较好地指示3个人工湖泊水质的差异，水质由优到劣的排列顺序为麓湖＞荔湾湖＞流花湖．流花湖、荔湾湖和麓湖目前虽仍处于富营养状态，但清污截流等对城市湖泊污染的综合治理措施可以减少湖泊外部营养物负荷及沉积物内负荷，降低水体的营养盐含量，有助于原生动物群落的恢复．图3表3参16

PFU PROTOZOAN COMMUNITY COLONIZATION PROCESS AND ITS INDICATION OF WATER QUALITY IN GUANGZHOU URBAN ARTIFICIAL LAKES

With the PFU method (GB/T12990 91 ), the protozoan community colonization process was studied in three urban artificial lakes. Liuhua Lake, Liwan lake, and Luhu Lake in Guangzhou. The result indicated that the numbers of protozoan species, phytomastigophora index, colonization process parameter ( S eq , G , T 90% ) , diversity index d and community pollution value(CPV) could well show the water quality. In these three lakes, totally 181 species of protozoan, including 53 phytoflagelates, 24 zooflagelates, 24 sacrcodinas and 80 ciliates were found during the investigation. The species and phytomastigophora index of Liwan Lake were 100 and 24%, while those of Liuhua Lake were 107 and 26.16%, and those of Luhu Lake were 138 and 27.54%, respectively. The PFU protozoan community colonization in Liuhua Lake reached its species maximum of 65 on the 3rd day, while that in Liwan Lake and Luhu Lake reached the species maximum of 66 and 90 on the 5th day. Though the three lakes were still in eutrophication condition, the comprehensive prevention and contermeasures including pollution cutting engineering and cleaning out the substrate sludge could decrease the inside and outside loading of nutrition and sediments, reduce the nutrition salt content of water column, and help restore the protozoan community. Fig 3, Tab 3, Ref 16