6种沉水植物对富营养化水体化感抑藻效果研究  

Allelopathic Effect of Six Submerged Macrophytes on Algae Growth in Eutrophied Water

作　　者：张之浩[1] 李威[1] 吴晓芙[1] 

机构地区：[1]中南林业科技大学院系生命科学与技术,湖南长沙410000

出　　处：《湘潭大学自然科学学报》2017年第2期55-60,共6页Natural Science Journal of Xiangtan University

基　　金：“十二五”国家科技惠民计划项目(2012GS430203);2015年湖南省环境保护厅环保科研课题(湘财建指[2015]109号)

摘　　要：将6种沉水植物:狐尾藻(Myriophyllum verticillatum)、苦草(Vallisneria natans)、轮叶黑藻(Hydrilla verticillata)、金鱼藻(Ceratophyllum demersum)、菹草(Potamogeton crispus)和伊乐藻(Elodea Canadensis)种植于以绿藻和硅藻为优势种群的富营养化水体中,对比研究其化感抑藻效应.结果表明:在自然状态下,苦草、轮叶黑藻和狐尾藻针对富营养化水体中的浮游藻类具有明显且稳定的抑制效果,化感抑藻效应更具广谱性,可优先考虑应用于实际工程中.In order to compare and evaluate the allelopathic effect of submerged macrophytes on algae growth under natural conditions,six species of submerged macrophyte（Myriophyllum verticillatum,Vallisneria natans,Hydrilla verticillata,Ceratophyllum demersum,Potamogeton crispus,and Elodea Canadensis）were planted in eutrophied water.The water samples used in the experiment were collected from a polluted pond rich in Chlorophyta and Bacillariophyta as dominant algae species.The results obtained from the analyses indicated that Vallisneria natans,Hydrilla verticillata and Myriophyllum verticillatum had the most significant and stable inhibiting effect on the growth of phytoplankton.The allelopathic effects of these three species also extended for longer period in comparison with other tested submerged macrophytes.The experimental results suggest that Vallisneria natans,Hydrilla verticillataand Myriophyllum verticillatumcan be used as phytoremediation species for control of algae growth in eutrophied water.

关 键 词：沉水植物 富营养化水体 化感效应 抑藻作用 

分 类 号：X173[环境科学与工程—环境科学]