矿化度对清水型水生态系统结构的影响

Salinity Influence on the Structure of the Clear Water Ecosystem

对比分析大源公园湖和麓湖水生态系统,得出矿化度对湖泊水质的好坏、沉水植物和浮游生物种类演替的影响。结果表明:矿化度对沉水植物和浮游动植物影响较显著。大源公园湖的沉水植物以马来眼子菜和篦齿眼子菜为优势种群,浮游藻类以硅藻和蓝藻为优势种群,浮游动物种类稀少;麓湖的沉水植物以黑藻和苦草为优势种群,浮游植物以蓝藻和绿藻为优势种群,浮游动物以轮虫为主。

The ecological system of Dayuan Park Lake and Lu Lake is compared to study the influence of the salini- ty on the lake water quality and the succession of the submerged plants and plankton. The results show that the sa- linity greatly influences the submerged plants and plankton. In Dayuan Park Lake, Potamogeton malaianus and Potamogeton pectinatus are the dominant submerged plants, and Cyanobacteria and Bacillariophyta are the dominant phytoplankton, but the plankton is rarely seen. In Lu Lake, the submerged plants are dominated by Hydrilla verti- cillata and Allisneria spiralis, the dominant phytoplankton is Cyanobacteria and Chlorophyta, and the zooplankton is mainly Abundant and Rotifer.