简介:Contrastwithartificialenvironment,themulti-levelself-organizationalsystemofnaturehasgreatgain.Sustain-ablematerialenvironmentshouldrespectnature:non-rubbishandsuper-cyclequalityofnaturalecosystemoffersthematerialsourceofhumandevelopment,fractalstructureofnatureoffersnewfieldofspaceandinformationsourcetothishigh-densityandinformation-basedsociety,dissipativestructureofnaturelinksthenewsystemofenergywithwholeecosystemorgani-cally,andlife-chainregulationisthebaseofsustainablelifeenvironment.Natureguaranteesthephysicalhealthyenviron-mentbyitsall-dimensionhealthyfactor,constructsthementalhealthyenvironmentbyitsqualityofco-ordinateandchaos,sothatguaranteesthewholeemergenceofsustainabledevelop-mentonthe'super-science'level.Intheviewofsustainabledevelopment,construction,greeneconomyandhumanhealtharebasicfields.Withtheconceptofecosystemregulation,wecanrelatethesefieldsorganicallyandfulfillthetaskofhumanhealth,welfareandsustainabledevelopment.Ecosystemregulationisthebaseofsustainabledevelopment'snewpara-digm.
简介:Thispaperisthefirstrecordedeconomicvalueoflivingfossil,anevaluationofthebasiceconomicvalueofLingula,basedonthedirectutilizationofhouseholdsforfoodandsale.Twenty-onelocalfishermenwhocollectedLingulainTratProvincewerefocusedonbyusinginterviewquestionnaires.Theanimalhabitatsareinfluencedbytheencroachers’age,genderandharvestmethod.Thetotaleconomicvaluein2011wasaroundtwomillionbaht.ThosewhopossessfishinggearandhavemoremoneycanhavegreateraccesstotheproductThelocalcommunitiesinNongKhunsongsub-districtaresuccessfulincollectingtheLingulaandindoinglocalbusiness.Themarketchannelanalysisisconductedatlocal,provincialandnationallevelsandshortmarketchainsaredemonstratedintheformofawholesalemarketintheLingulatrade.Thisrepresentssignificantconsumptionbythelocalcommunities.Thestudyfurtherrecommendssustainableconservationandmanagementeffortsatalocalscale.
简介:Thesmallhydropower(SHP)willbelesscompetitiveintheabsenceofenvironmentalvalue.Thelackofinformationhasbecomeanimportantobstaclechallengingdecision-makersinresource-usechoices.Thispaperisanapplicationofcontingentvaluationmethod(CVM)inruralChinatoestimatethewillingness-to-pay(WTP)forenvironmentalservicesprovidedbyexitinghydropowerstation.Usingthesingle-boundedanddichotomouschoiceCVM,theecologicalvalueofTongjiqiaoReservoir(TJQR)isestimated,andtheannualmeanWTPsofsingle-boundedanddouble-boundedCVMestimationare141.05and219.52Yuan(RMB)/a,respectively.The95%confidenceintervalofannualWTPonanaverageis118.47,166.79Yuan(RMB)/aand204.41,236.22(YuanRMB)/a,respectively.Incontrast,double-boundedmodelcouldobtainmuchmoreinformationofWTPoftheinvestigated,thusreducingtheconfidenceintervalofestimation,andenhancingtheestimationaccuracyoftheWTP.AccordingtotheestimatedmeanWTPofthedouble-boundedCVM,thetotalecosystemservicevalueoftheTJQRis15.54millionYuan(RMB).Comparedwiththeconventionalelectricityoffossilpowerandlargehydropower,theSHPwillbelesscompetitiveintheabsenceofnon-marketvalue,ignoringthattheenvironmentalimpactsofexistingSHPwillunderminethehealthydevelopmentofcleanenergysector.