X,(,300071):(Dematerialization),::;;:X196:A:(K)05259(1002-1264)(2006)01-0030-03DematerializationTheKeytoCircularEconomyXIEFang,LIHui2ming(EnvironmentandSocialDevelopmentResearchCentre,NankaiUniversity,Tianjin300071,China)Abstract:Therelationshipbetweendematerializationandcirculareconomywasdiscussed.Thedematerializationwasdefinedtobeusinglessmaterialswhileprovidingthesameorbetterserviceorfunction.Itdoesnotmeanthatmaterialsandenergycanbetotallysaved,butitmeantthatthehighwelfareeconomycouldberealizedthroughmaximizingtheusageofresourcesandenergy.Dematerializationwasthekeytocirculareconomy.Ithadbeenprovedthatdematerializationcouldberealizedthroughthefollowingappraches:changingtheover-consumptionconcept,providingserviceinsteadofproducts,eco-de2sign,prolongingtheusageofproducts,intensifyingtheusage,easyprocessingandmaintainingoftheproductsandsubstitut2ingmaterialswithhightechnology-basedones.Also,thelimitationofdematerializationwaspointedout.Keywords:circulareconomy;dematerialization;eco-efficiency,,,,,1,,,,,,,2(Dematerialization),2,,,,,,,,,,,0319120062URBANENVIRONMENT&URBANECOLOGYVol19,No.1Feb.2006X:(20032121);(NKC04018):2005-11-1433.120%30%(),8%,,,,,,3.2,,,,(servicedeliverymachine),[1]3.3,21,,(P)(I)(P/I),,19981863003000L,4006,,,10a,,,2000[2]3.41,4:(1),,;(2);(3)();(4)3.5,:(1),;,,,,,co-housing(2),,(3),,[3]3.6,,,,,3.7,2,,1970,,,1978198810a,215.7kg,13,44.919.516.6kg19781988181.6kg[4]4,,(),,,,?,,908kg1816kg2.6,908kg1816kg,2,,GDP,GDP,5,,,,[1]ErikSundin,BertBras.MakingFunctionalSalesEnvironmentallyandEconomicallyBeneficialThroughProductRemanufacturing[J].JournalofCleanerProduction,2005,(13):913-925.[2][].[M].:,2003.42,254.[3].[M].:,2003.175.[4],,.-[J].,1997,(4):46.:(1961-),,,,,,,10(29)5.2UASB-,,,,,,,,1.52.0mg/L5.3--,PAC,PAM,PAC:25mg/L;PAM2mg/L;PAC10%;PAM0.1%,3mg/L5.4,,,300,450m2,0.48/t0.20/t66.1UASB-,,,,6.2,--,[1].-[J].,1997,8(4):7-8.[2],,.()[M].:,2000.217.:(1963-),,,,1985,,10231912006