%0 Journal Article
%T Effect of Combined Plant-Rope Ecological Floating Beds on Improvement of Eutrophic Water Quality
%A ZHANGYa-juan
%A LIUCun-qi
%A WANGJun-xia
%A SUNLei
%A LIHong-bo
%A WUYi-hong
%J 重庆师范大学学报(自然科学版)
%P 122-128
%D 2012
%R 10.11721/cqnuj20120323
%X Recently,lakeeutrophicationhasbecomeaseriousconcernanditscausesandcontrolshaveattractedgrowingattentionworldwide.Intheexperimentsdescribedhere,wehaveusedIpomoeaaquaticaasanexperimentalplantforusewithecologicalfloatingbeds.Threekindsofcombinedecologicalfloatingbedsystemswereconstructedbyhangingtwokindsofrope(hempandPST)belowthebeds,andtheireffectivenessforimprovingwaterqualitywasinvestigated.Theresultsshowedthattheplantecologicalfloatingbed,plant-PST-ropecombinedbed,andplant-hemp-ropecombinedbedprovidedsignificantremovaleffectsonTN,NH4+-N,TPandDIP.Removalefficiencieswere39.09%,49.46%and60.43%,44%55%,67.79%and70.05%,63.68%,54.72%and71.70%,and53.70%,50.62%and64.20%,respectively.Theplant-hemp-ropecombinedfloatingbedhadespeciallyhighNandPremovalrates.Inthethreekindsofecologicalfloatingbeds,thecontributionsofplantabsorptiontoNandPremovalwere36.13%and71.85%,32.15%and87.07%,27.11%and74.34%,respectively.ThissuggestedthatforNremovalinthesystem,plantuptakeaccountedforarelativelysmallportionoftotalabsorption,andthatdenitrificationbymicroorganismsmightplayamoreimportantrole.However,plantuptaketooktheleadingroleinPremovalinallthreekindsoffloatingbeds.Therefore,thecombinedecologicalfloatingbedhavingbothropesandplantswasaneffectivewayforimprovingthequalityofeutrophicwater.
%K ecologicalfloatingbed
%K Ipomoeaaquatica
%K eutrophication
%K PSTrope
%K hemprope
%K N
%K P
%U http://cqnuj.cqnu.edu.cn/oa/DArticle.aspx?type=view&id=120323