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1、第32卷第10期环境科学与管理Vol132No1102007年10月ENVIRONMENTALSCIENCEANDMANAGEMENTOct.2007文章编号:1673-1212(2007)10-0077-04菖蒲对不同程度富营养化水体的净化作用研究1222杨旻,吴小刚,周连凤,张维昊(1.武汉大学园林中心,湖北武汉430079;2.武汉大学资源与环境学院,湖北武汉430079)摘要:通过静态培养实验,研究了菖蒲(AcoruscalamusL.)对5种不同程度富营养化水体水质的影响,比较了+3-培养后各水体中菖蒲生物量
2、变化。结果发现,TP、TN、NH4-N、PO4-P的去除量与水体各自初始浓度正相+3-关。在实验初期TP、TN、NH4-N、PO4-P的变化速率快,后期变化速率减慢。极度富营养E组水体中营养盐去除率低于重度富营养D组水体。D组TN去除率达96.38%,TP去除率达98132%。富营养水体D、E组COD逐渐下降,中营养水体C组COD在开始水平上下轻微波动,低营养水体A、B组一周后略有上升,之后维-1持在71078mg·L以下。各组富营养化水体叶绿素a一周后都有明显下降,实验结束时叶绿素a下降率最高可达到98.01%,贫营
3、养水体A组叶绿素a维持低水平。结果发现,菖蒲可以较好地净化富营养水体,同时也能保持清洁水体水质。在水体生态修复工程中具有良好的应用前景。关键词:菖蒲;富营养化水体;净化中图分类号:X172文献标识码:BStudyontheCapacityofPurificationofAcorusCalamusL.inEutrophicWaterofDifferentDegree1222YangMing,WuXiaogang,ZhouLianfeng,ZhangWeihao(1.GardenCenterofWuhanUniversit
4、y,Wuhan430072,China;2.CollegeofResourcesandEnvironmentalSciences,WuhanUniversity,Wihan430079,China)Abstract:Withstaticexperiments,theauthorinvestigatedtheinfluencesofAcorusCalamusL.infivekindsofeutrophicwa2terofdifferentdegrees,andcomparedthevarietyofthebiomasso
5、fAcorusCalamusL.amongdifferentwaters.Wefoundthatthereduceoftotalnitrogen,totalphosphorus,ammonianitrogen,anddissolvedphosphatehavepositiverelationshipwiththeiroriginalconcentration.Totalnitrogen,totalphosphorus,ammonianitrogen,anddissolvedphosphatefellquicklyint
6、heearlydaysoftheexperimentwhileslowlylater.TheremovalrateofnutritionintheutmostEutrophicWatergroupEwaslowerthanthatofgroupD.theremovalratesofTN,TPingroupEreached96.38%and98.32%.TheCODcontentineutrophicwatergroupD,Efellgrad2ually,theCODcontentinthemiddlenutrition
7、watergroupCwavedgentlyattheshartlevel.theCODcontentinlownutritionwa2-1tergroupA,Bmoveupslightlyafteraweek,thenkeepupunder7.078mg·L.Thechlorophyll-acontentineutrophicwaterwasdecreasedsharplyinaweek,theremovalrateofchlorophyll-acontentineutrophicwatercouldreach98.
8、01%attheendoftheexperiment,thechlorophyll-acontentintheimpoverishednutritionwatergroupAcouldkeeplowlevel.Thestudyshowedthat,itcouldpurifyeutrophicwaterwell,andkeepwat
