简介：Toevaluatetheeffectofvegetativefilterstripsonsedimenttrapping,thespatialdistributionofdepositedsediment,andthesizedistributionofdepositedparticlesfromhyperconcentratedflows,asimulatedgrassfilterstripexperimentwasconductedwithplasticgrassusinganadjustableslopesteelflume.Thesimulatedvegetationcoverwas36%,andtheinflowsedimentconcentrationsappliedwere147,238,320,and429kgm~(-3).Thesedimentconcentrationintheoutflow,andthesedimentparticlesizeweredetermined.Theresultsshowedthatthegrassfilterstripstrappedmostofthesedimentfrominflowatlowsedimentconcentration.Thedepositionefficiencydecreasedwithincreasingsedimentconcentration,being55.2%and15.7%inthe147and429kgm~(-3)sedimenttreatments,respectively.Mostofthedepositedsedimentsweredistributedintheupperflume.Inaddition,thegrassfilterstripsmainlytrappedthecoarsesediment(particlesize>10μm).