上海海洋大学学报2012，Vol.21Issue(1)：73-77,5.
冬季苦草与伊乐藻对贡湖水源地水质净化效果研究
Study of the depuration effect of Vallisneria spiralis and Elodea Canadensis in water sources area of Gong Hu in winter
摘要
Abstract
This paper studied the depuration effect of two kinds of submerged macrophytes Vallisneria spiralis and Elodea Canadensis in winter,after cold acclimation in laboratory.From 5 to 25 November 2009,ten large embankment enclosures were set up in Dong Jing River of the water source area in Gong Hu,Suzhou Vallisneria spiralis and Elodea Canadensis were planted in the enclosures.Experiments were made in 4 groups： Vallisneria spiralis,Elodea Canadensis,Vallisneria spiralis ＋ Elodea Canadensis and control group.Each treatment had three replicates.Sampled once every five days,to test the water quality inside of the enclosure and the outside enclosure.The results showed that：（1） In the enclosures grown submerged macrophytes： concentrations of NH4-N,NO3-N,TN,were significantly lower than those before the experiment（P0.01）,and the concentrations in Vallisneria spiralis control,Elodea Canadensis control,Vallisneria spiralis ＋ Elodea Canadensis control are reduced to 78.76%,70.20%,83.42%,81.85%,72.30%,75.55%,88,80%,78.80%,86.21%,respectively,while the control group and the water outside the enclosures have a lesser extent nitrogen concentrations,in which TN concentrations decreased 37.12% and 15.87%;（2）The control of Vallisneria spiralis ＋ Elodea Canadensis have high reduction rate in decreasing the TP and CODMn,which were 86.97% and 76.16%,significantly higher than other controls（P0.05）.（3） The effect of purifying water of Vallisneria spiralis and Elodea Canadensis is better in winter,and the purifying effect： Vallisneria spiralis ＋ Elodea CanadensisVallisneria spiralis Elodea Canadensis.This paper provides a theoretical basis for the recovery of submerged plants of lake ecological restoration,species selection and reasonable allocation.关键词
苦草/伊乐藻/路基围隔/净化效果Key words
Vallisneria spiralis/Elodea canadensis/subgrade mesocosms/depuration effect分类
天文与地球科学引用本文复制引用
王阳阳,吴海龙,霍元子,曲宪成,陈群芳,何培民..冬季苦草与伊乐藻对贡湖水源地水质净化效果研究[J].上海海洋大学学报,2012,21(1):73-77,5.基金项目
国家水体污染控制与治理科技重大项目 （）
上海市科学技术委员会重点科技攻关项目 （）
上海市科学技术委员会应用基础研究项目 （）
上海市水生生物学重点学科建设项目 （）
上海海洋大学博士启动基金 （）
