广州田美河水生态修复对水质改善研究

Study on Water Quality Improvement by Ecological Restoration of Tianmei River in Guangzhou

以广州市花都区田美河(区政府段)河道构建示范段实施水生态修复,修复长度约为200 m,修复面积约为3000 m2。通过构建沉水植物群落为主的水生态系统,田美河示范段在实施构建后,CODMn从5.36 mg/L下降到4.30 mg/L,NH3-N从1.82 mg/L下降到1.19 mg/L、TP从0.274 mg/L下降到0.159 mg/L,较水生态构建前分别削减了19.8%、34.6%、42.0%,对河涌水质有一定改善作用,为田美河全流域和广州市类似河涌的水质提升和生态修复提供示范作用。

The demonstration section of Tianmei River(district government section)in Huadu District of Guangzhou city was constructed to carry out water ecological restoration.The restoration length was about 200m and the restoration area was about 3000m2.Through the construction of submerged plant community based aquatic ecosystem,the demonstration section of Tianmei River CODMn decreased from 5.36 mg/L to 4.30 mg/L,NH3-N decreased from 1.82 mg/L to 1.19 mg/L,TP decreased from 0.274 mg/L to 0.159 mg/L,which decreased by 19.8%,34.6%and 42.0%compared with that before the construction of aquatic ecosystem.It can be used as a model for water quality improvement and ecological restoration.