简介:Buildingecocitiesbecomesanobjectiverequirementforsustainabledevelopment.Thisarticlediscussestherelationshipbetweensustainabledevelopmentandsustainableurbandevelopment.Onthebasisofdiscussingthesigificanceofsustainableurbandevelopmentandthatofaneco-cityfromdifferentperspectives,itsuggestsseveralmanagementstrategiesfordevelopinganeco-city,adesirablesustainableurbanmodel.
简介:Asthemainorganicpollutantinmunicipallivingwaste,kitchenwastecausessecondarypollutioninthecourseofitsbeinggatheredandtransportedtothelandfillbymixingwithotherrefuseandbydecomposition.Thismakespollutionpreventionmoredifficultandraisesthecostoflandfillengineering.However,theamountofsolidwastetobetreatedcanbedecreasedandsuchpollutionburdenlessenedbydisposingofthesolidwasteinlocalmunicipalareas.TheprograminBeijingalsoshowsthatthisworkswellwithoursituationinChinaandcanacceleratemarketizationandpublicparticipation.
简介:DramaticeconomicandsocialchangeshavetakenplaceinJiangyincityduetorapidandunevenurbanizationandindustrialization.Theenvironmentaldegradationhasfolloweddrivenbythesechangessincethe1980's.Withthepressuresandeffectsofenvironmentaldeterioration,thecityhasimplementedenvironmentalmanagementtoholdbackthetrendsofnegativeenvironmentalchanges.Fromtheviewpointofsystems,DPSERisagoodmodelforurbanenvironmentalchangestounderstandthecauses,pressure,state,effect,existingresponsesandfutureactionstrategies.WetookJiangyincity,adevelopedcityinSouthJiangsuprovince,EastChina,asanexample,andanalyzedthecharacteristicsofenvironmentalchangesandurbanresponsesusingDPSERmodel.Someoperationalstrategieshavebeenputforwardtodirectthecityenvironmentalmanagementtowardsasustainableroadstepbystep.
简介:Thepaperdemonstrateswhyitisnecessarytotaketherestorationofmarinecoastalecosystemhealthasanewgoalforintegratedcatchmentmanagement,incoastalareaoftheToloHarbour.Thepresentgoalofintegratedcatchmentmanagement(ICM)intheToloHarbouristomeetwithWaterQualityObjectives.TheperformanceofanICMplan,ToloHarbourActionPlan(THAP),isevaluatedbyusingmarinecoastalecosystemhealthindicatorsincludingstressindicatorsandresponsesindicators.SincetheimplementationofTHAPin1988,somesignificantreductioninpollutionloadinghasbeenobserved-reductionof83%ofBODloadand82%ofTNbetween1988and1999.TherehasbeenanimprovementinthehealthstateofToloHarbourmarinecoastalecosystemasevidencedinthetrendsofthephysical,chemicalandbiologicalindicators,althoughsomereversefluctuationsinsomeperiodsexist.However,thiscanonlybeconsideredasthefirstsignoftheecosystemhealthrestoration,sinceecosystemhealthco