城市公园微水体富营养化生态控制技术--以上海中山公园鸳鸯湖为例

Ecological Control Technologies of Eutrophication of Small Lakes in Urban Parks--Taking Yuanyang Lake in Shanghai Zhongshan Park as an Example

水体是公园景观的重要组成部分,以上海中山公园鸳鸯湖水体为例,通过分析公园水体富营养化形成原因,针对性地开展了污染源控制和水生植被生态系统构建,实施了水体驳岸自然化改造、湿生植被恢复、水体更新与曝气增氧等综合措施,使鸳鸯湖水质指标从劣Ⅴ类提高到Ⅳ类,水质明显改善。研究结果可为城市公园微水体富营养化控制提供借鉴。

Water is an important part of the park landscape.This paper takes Yuanyang Lake in Shanghai Zhongshan Park as a case to study the improvement of small lakes’water quality.Based on the analysis of causes of eutrophication in the lake,the paper carries on the control of the specific sources of water pollution and the ecological restoration of aquatic vegetation system.The comprehensive measures including natural transformation of waterfront barge,wetland vegetation restoration and water renewal and aeration were imposed.The lake water quality indicators upgraded from the worse than V Grade to IV Grade.Water quality improved obviously.The case can be a reference for eutrophication control of small lakes in city parks.