This paper investigated the trophic state of mirror lake. It shows that DO is abundant and BOD5,COD,TP,TN,Chla are very high in comparison with the standard value for water.

• 对镜湖水质富营养化的研究结果表明 ,镜湖水体溶氧丰富 ,五日生化需氧量 (BOD5)、化学需氧量 (COD)、总磷 (TP)、总氮 (TN)、叶绿素a(Chla)严重超标。