【摘要】 星云湖入湖污染物负荷量80％来自面源,而河道是输送污染物的主要通道,为了削减入湖污染物,在大街河口末端修复湖滨湿地4．5 hm²,恢复湖湾沉水植物28．8 hm²,对表流湿地及沉水植物的净化效果进行了试验研究．研究结果表明,由于水生植物庞大的表面积吸附、分解和吸收作用、水质净化水质效果十分明显,净化大街河水317 8×10⁴m³/a,SS、BOD₅、COD_Mn、TN、TP的去除率分别为82．8％、60．1％、52．8％、49．2％、40 7％．河口湖滨湿地的修复不仅净化了水质,而且改善了河湾景观,恢复了湖泊生物多样性．更多还原

【Abstract】 About 80 percents of pollution of Lake Xingyun come from non-point sources,and rivers account prima- rily for transporting pollutants into Lake Xingyun.To reduce the pollutants,wetlands with an area of 4.5 ha was re- stored in estuarine areas of Dajie River.The total amount of purified river water was 317.8 10⁴ m³/a.It was showed that the purification efficiency was significant via the combined mechanism of absorption,decomposition and assimilation of aquatic plants.The removal rates of SS,BOD₅,COD_Mn,TN and TP were 82.8%,60.1%, 52.8%,49.2%,and 40.7%,respectively.更多还原