城市公园水体富营养化的水生植物修复效果研究  

Study on the Remediation Effect of Aquatic Plants on Eutrophication in Urban Park Water Bodies

作　　者：查伟 孔巧灵 王文豪 曹有莉 万宇 ZHA Wei;KONG Qiaoling;WANG Wenhao;CAO Youli;WAN Yu(Laboratory of Water Conservancy and Water Transportation Engineering Ministry of Education,Chongqing Jiaotong University,Chongqing 400074,China;Chongging Jiaotong University National Inland Waterway Regulation Engineering Technology Research Center,Chongqing 400074,China)

机构地区：[1]重庆交通大学水利水运工程教育部重点实验室,重庆400074 [2]重庆交通大学国家内河航道整治工程技术研究中心,重庆400074

出　　处：《环境影响评价》2024年第3期78-83,共6页Environmental Impact Assessment

基　　金：重庆市城市管理局科研项目(城管科字[2021]第28号)。

摘　　要：该研究针对城市公园水体富营养化问题,选取挺水植物再力花、浮水植物睡莲、沉水植物苦草等常见水生植被,对比分析其不同组合方式以及不同生长期对轻度、中度、重度富营养化水体营养盐的去除效果。研究结果显示,3种水生植物的7种组合配置在不同生长期对水体营养盐均有去除效果,其中以再力花+睡莲+苦草组合方式效果最佳。尤其对于中度富营养化水体,该组合方式对总氮、总磷、氨氮、化学需氧量的去除率分别为97.0%、89.2%、75.5%、58.2%。综合比较植被对总氮、总磷、氨氮、化学需氧量的去除效果,发现对总氮的去除效果最好,为68.0%~97.0%,其次是总磷,为72.2%~97.2%。此外,随着底物浓度的降低,去除率随植被的生长周期基本呈现下降的趋势。研究成果可为城市公园水体的生态修复提供理论依据。This study addresses the issue of eutrophication in urban park water bodies.Common aquatic plants such as Ranunculus,Nymphaea,and Myriophyllum were selected for their ability to thrive in water.Their various combinations and growth stages were compared to analyze their effectiveness in removing nutrients from mildly,moderately,and severely eutrophic water bodies.The findings indicate that the seven combinations of these three aquatic plants exhibit nutrient removal effects during different growth stages.Among them,the combination of Ranunculus,Nymphaea,and Myriophyllum shows the most promising results.Particularly for moderately eutrophic water bodies,this combination demonstrated removal rates of 97.0%for total nitrogen,89.2%for total phosphorus,75.5%for ammonia nitrogen,and 58.2%for chemical oxygen demand.Overall comparison reveals that the removal efficiency for total nitrogen is the highest,ranging from 68.0%to 97.0%,followed by total phosphorus at 72.2%to 97.2%.Furthermore,as substrate concentration decreases,the removal rates generally exhibit a declining trend over the growth cycle of the vegetation.These research findings provide a theoretical basis for ecological restoration of urban park water bodies.

关 键 词：水生植物 净化效果 富营养化 公园水体 

分 类 号：X82[环境科学与工程—环境工程]