海珠湿地植物群落与水质的关系

Relationship between plant communities and water quality in Haizhu wetland

以海珠国家湿地公园一期为研究对象,设置8个样点对海珠湿地的水质状况进行监测.结果表明,再力花(Thalia dealbata)+美人蕉(Canna indica)-苦草(Vallisneria natans)群落、美人蕉+菖蒲(Acorus calamus)-苦草群落、再力花+风车草(Cyperus alternifolius)-苦草群落和花叶芦竹(Arundo donax var. versicolor)+铜钱草(Vallisneria natans)-苦草群落等4个植物群落生长的水体中总磷、总氮、NH_4^+-N和化学需氧量的浓度均较低,水体水质较好,由此推测苦草对水质净化效果明显.

The water quality of8sampling points in the first phase of Haizhu National Wetland Park were monitored.The results showed that the concentration of total phosphorus,total nithogen,NH+4-N and chemical oxygen demand were lower in the communities of Thalia dealbata+Canna indica-Vallisneria natans,Canna indica+Acorus calamus-Vallisneria natans,Thalia dealbata+Cyperus alternifolius-Vallisneria natans,and Arundo donax var.versicolor+Hydrocotyle vulgaris-Vallisneria natans,which showed much better water quality.It was speculated the purification effect of Vallisneria natans on water quality was obvious.