清水型生态系统构建技术在玄武湖的应用研究

Research on the application of clear water ecosystem construction technology in Xuanwu Lake

为改善南京市玄武湖水质,于2022年5月利用清水型生态系统构建技术对玄武湖北湖部分区域生态系统进行修复与构建。结果表明:清水型生态系统的构建可以有效改善玄武湖北湖水质,研究区内水体各项营养盐质量浓度较外湖有明显降低,水体藻华暴发风险减小。除TN外,研究区TP、NH3-N和CODMn质量浓度整体可以达到地表水Ⅲ类水标准,本研究为玄武湖后续水生态恢复工程提供借鉴。

In order to improve the water quality of Xuanwu Lake in Nanjing,a clean water ecosystem construction technology was used in May 2022 to repair and construct the ecological system in some areas of North Lake.The results indicate that the construction of a clear water ecosystem can effectively improve the water quality of the North Lake of Xuanwu Lake.The concentration of various nutrients in the water body of the study area is significantly lower than that of the outer lake,and the risk of algal blooms in the water body is reduced.Except for TN,the overall mass concentrations of TP,NH3-N,and CODMn in the study area can meet the ClassⅢsurface water standard,providing reference for the subsequent water ecological restoration project of Xuanwu Lake.