重庆地区酸化水体中的浮游生物  

PLANKTON IN ACIDIFIED WATERS INCHONGQING AREA

作　　者：况琪军[1] 夏宜[1] 庄德辉[1] 

机构地区：[1]中国科学院水生生物研究所

出　　处：《重庆环境科学》1994年第5期16-18,24,共4页Chongqing Environmental Science

摘　　要：对我国重酸雨区重庆市郊六个不同酸度水体中的藻类和浮游动物进行调查和比较的结果表明，酸化水体（ｐＨ＜５．０）中的藻类和浮游动物的种类数分别较同一地区正常水体的少４１．８８％和５０．０％，细胞或个体密度分别较正常水体的少７０．０％和３４～６７％。轻度酸化水体（６．０＞ｐＨ＞５．０）的上述指标亦较正常水体的低，但不如酸化水体的明显。Investigations of plankton communities in some acid waters in Chongqing City were conducted duriz1g 1991 to 1992.The results showed that the spe-cies nutnbers both of phytoplanktonand zooplankton were,reduced significantly in acidified waters(pH<6.0),only to 58.12%and 50.0%of the normal waters at the san1e area. About 70%reduction in cell density of algae and 34-67%reduction in individual numbers of zooplankton were found in aeidified waters. Both of the paralneters deterlnined were aslo redueed in subacid waters(6.0>pH>5.0),but the reductions just kept an interlnediate level.

关 键 词：水污染 酸化 水体 藻类 浮游动物 群落 

分 类 号：X520.323[环境科学与工程—环境工程]