简介：ConstructedwetlandwasfirstintroducedintotheUnitedKingdominthemiddleof1980s,followingavisitbyagroupofscientisttoWesternGermany.Inthepast2decades,theapplicationsofconstructedwetlandsinthiscountryhaveexpandedsubstantially,duetothedemandforgreentechnologiesandrisingcostoffossilfuelenergies.Thispaperreportedastatisticalinvestigationoftheperformancesof78horizontalflowwetlands,representativesofsuchsystemintheUnitedKingdom.Alternativedesignequations,basedonorganicmatterremovalefficiency,havebeendevelopedfromMonodkinetics,andtheaccuracyandreliabilityofcurrentandalternativedesignapproacheshavebeenexamined.

简介：EDSSisacomprehensivesoftwaresystemforwaterqualitymanagementintidalrivernetworksingeneralandforthePearlRiverDeltainparticular.Itspurposeistoprovideapracticaltoolthatcouldassistgovernmentagenciesindecisionmakingfortheefficientmanagementofwaterresourcesintermsofbothquantityandquality.Bycombiningthecapabilitiesofgeographicalinformationsystem(GIS),databasemanagementsystem(DBMS),modelbasemanagementsystem(MBMS)andexpertsystem,theaimistoimprovethequalityofdecisionmakinginwhatisbecominganincreasinglycomplexarea.ThispaperfirstoutlinesthebasicconceptsandphilosophyadoptedindevelopingEDSS,thesystemarchitecture,designfeatures,implementationtechniquesandfacilitiesprovided.Thereafter,thecorepartofthesystemthehydrodynamicandwaterqualitymodelsaredescribedbriefly.ThefinalcontributioninthispaperdescribestheapplicationofEDSStothePearlRiverDelta,whichhasthemostcomplicatedtidalrivernetworkpatternsaswellasthefastesteconomicdevelopmentintheworld.Examplesaregivenofthereal-worldproblemsthatcanbeaddressedusingthesystem,includingcross-boundarywaterpollutionanalysis,regionaldrinkingwatertake-upsiteselection,screeningofimportantpolluters,environmentalimpactassessment,andwaterqualityzoningandplanning.ItisillustratedthatEDSScanprovideefficientandscientificanalyticaltoolsforplanninganddecision-makingpurposesintheinformationera.