学科分类
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24 个结果
  • 简介:Marketbasedinitiativesformanagementofdegradingecosystemsandtheirserviceshavereceivedtheaddedattentionasoneoftheinnovativeresponsesintherecentyears.Thoseinitiativessuchasdirectandindirectpaymentforecosystemserviceslikepremiumforrainforesthoney,paymentbythepeopleatthelowerreachtothoseattheupperreachforthewatershedservicesetc.havedrawntheattentionofthedecisionmakersastheyhaveprovedtobefarmorecosteffective.Thispapersynthesizesthekeymessagesfromsomeofthecelebratedbutwellestablishedmarketforecosystemservicesacrosstheworld.Theecosystemservicesconsideredinthepaperarecar-bon,watershedservicesandbiodiversity.Wefindthatwhilecrediblevaluationofecosystemservicesforallservicesremainacriticalconcernbehindsettingupthepaymentmechanism,absentofnecessaryinstitutionalframeworkmayseriouslyunderminethisinnovativeresponseformanagementofecosystems.Inthepaper,necessaryinstitution-almechanismsenablingthemarketforthoseserviceshavebeensketchedout.Keymessagesfromthosecaseshavebeensynthesized.

  • 标签: 生态经济 生态服务 评估 惩罚
  • 简介:Itisveryimportanttoanalyzeandevaluatethebenefitsofmeteorologicalservicesforpolicydecision-makingandtakingprecautionsagainstmeteorologicaldisasters.Inthisstudy,amodelforevaluatingthebenefitsofmeteorologicalservicesforindustriesisconstructed,withthecombiningmethodofdose-responseandcontingencyassessment,andalsoabsorbingothercountries'experience.Accordingtothismodel,andreferringtothepracticalvalueofthecontributionofmeteorologicalservicestotypicalenterprises,expertscalculatedthebenefitsofmeteo-rologicalservicesforeveryindustry.Byapplyingthismodel,andtakingtheevaluationframeworkof'todeterminewhichindustriesaremeteorology-sensitive'-'toevaluatethebenefitsofmeteorologicalservices'-'togetthetotalbenefitsofmeteorologicalservice',evaluationandanalysisonthetotalbenefitsofmeteorologicalserviceswasdonewithcasestudy.Accordingtothisstudy,theannualmeanbenefitsofmeteorologicalservicesareknownasnolessthan279.3billionyuan(costexcluded)inpresentnationaleconomicalenvironment.

  • 标签: 中国 工业经济 气象学 受益估测
  • 简介:TheValueoftheWorld'sEcosystemServicesandNaturalCapitalbyCostanzain1997isgenerallyre-gardedasamonumentfortheresearchofvaluingecosystemservices.However,theclassificationofecosystemser-vices,themethodofvariousservicessummationandthepurposeforstaticglobalvaluehadbeconfrontedbymanycriticisms.Basedonthesummaryofthesecriticisms,suggestions,relatedfunctionassessmentandfurtherstudydirection,thesustainabilityofecosystemservicesispresented.Thetwobasicindicatorsinecology,productivityandbiodiversity,respectivelycharacteringtheabilityofproducingandself-organizing,notonlyrepresenttheinternalfunctionofecosystem,butalsoareproportionedtoitsexternalfunctionofsupportingandprovidingforhumanlife.Onpresentingthegeneralformofecosystemservicesassessment,thispaperimprovesthemathematicalformulabygivingafunctionadjustingcoefficientcomposedofproductivityandbiodiversity.Theoretically,theintegrationofthetwoindicatorsreflectsthechangesofecosystemservicesatspatialandtemporalscales,canphysicallyassessthesustainabilityofecosystemservices,andbuildafirmscientificfundamentofvalueassessmentforecosystemservices.Objectively,itsapplicationshouldbestrictlytestedinnextstep.

  • 标签: 生物多样性 生态服务 理论模式 生态经济
  • 简介:一、引言随着企业管理系统的广泛应用,数据的产生与统计都由系统自动完成,对于这些快速积累的数据,该如何被解读和运用才能有效地协助企业经营者作出决策,就变成了系统开发设计人员的重要工作。一般而言,我们会将积累的数据以图表的方式呈现,除了便于呈现,方便观看外,更易于多方面进行分析。

  • 标签: 企业应用 SERVER SQL 企业管理系统 企业经营者 设计人员
  • 简介:Basedonacomprehensiveanalysisonvariousclassificationsofnaturalresourcevalues,thispapersummarizesanecologicalservicessystemofconstructedwetland(CW)ecosystemsfortheaccountingofecologicaleconomicvalue.Withtheresearch,thewetlandecosystemservicescanbeclassifiedintosixcategories,thatiswastetreatment,foodandmaterialproduction,watersupply,gasregulations,disturbanceandwaterregulations,habitatandrefugeprovision.Fordecisionmakingintermsofenvironmentaleconomicsforwetlandconstruction,ecosystemservicesvalueforthewetlandinSuzhouTaihuLakeNationalTouristandHolidayResortisaccountedfor7,088,769USD/yrthroughEnvironmentalEconomicsAnalysis.Ecosystemservicesvalueofwastetreatmentis825,000USD/yr,thatoffoodandmaterialproductionis1,430USD/yr,thatofwatersupplyis4,752,000USD/yr,thatofgasregulationis2,251USD/yr,thatofdisturbanceandwaterregulationsis1,3721USD/yr,andthatofhabitatandrefugeprovisionvalueis1,494,367USD/yr.TheecosystemservicesvaluesofapilotconstructedwetlandinSuzhouarecomparedwiththoseofotherwetlandsasameanandofatypicalhuman-interferedwetlandinWenzhouofChina.Resultsshowthatinbothfiniteandinfinitetimehorizonsconsidered,thewetlandinSuzhouTaihuLakeNationalTouristandHolidayResorthasthelargestservicesvalue.ThispaperanalyzesalltheprobabilitythatmayweakenthevalueoftheSuzhouTaihuWetlandinordertoprovidesomeadvicesforthewetlandprotection.

  • 标签: 生态系统服务价值 湿地生态 苏州 太湖 环境经济学 旅游度假区
  • 简介:Inthepast,evaluationsofecosystemfunctionsweremostlybasedonCostanza'smodel,whereasthespatial,qualityandtemporalcharacteristicsofregionalecosystemswerenotconsideredinthemodel.Focusingontheseissues,coefficientsofregionaldifference,spatialheterogeneityandwillingness-to-pay(WTP)wereestablishedtomodifyCostanza'smodel,andanewcomprehensivevaluationmodelofecosystemfunctionsisproposed.TheanalyticalresultsindicatethatthecomprehensivemodelcouldevaluateregionalecosystemfunctionsinChinaaccuratelyandprovidemorehelpfulinformationfordecision-making.TheempiricalstudyonZhangbeiCountyinHebeiProvinceshowsthattheintensivehumanactivitiescouldlimittheprovisionofecosystemfunctionswhiletheplannedecologicalprogramsmightpromotetherestorationofecosystemfunctions.

  • 标签: 生态经济学 生态系统 价值 研究
  • 简介:ValuationofecosystemserviceshasbeensoughtaseffectivetoolsthatenablethedecisionmakersindesigningthecosteffectiveresponsepoliciesformanagementofecosystemstowardsalleviatingthepovertyespeciallyineconomicallypoorregionslikeSouthAsia.Variousdirectionsandlinkagesbetweenpovertyanddegradationofecosystemandreducedflowofecosystemservicescanbetterbeunderstoodiftheregulatingserviceslikehydrologicalflowandcarbonsequestrationbyforest,andnutrientcyclingandbioremediationbywetlandscanbecapturedinmonetaryunit.SouthAsiancountriesincludingIndia,Nepal,PakistanandBangladesharethehotspotsofpovertywherepoordependuponvariousecosystemservicesfortheirlivelihoodsandallocationofresourceforconservationofecosystemswouldhaveadditionalmeritifregulatingservicesarecapturedandinternalizedintothepublicpolicy.Thepaperfirstraisesproblematicissuesinvaluationofregulatingecosystemservices,andattemptstolinkitwiththedependenceofpoor.Second,complexitiesofpoverty-ecosystemdynamicsarediscussed.Thirdly,thepossibleinterventiontoachievepovertyalleviationgoalisanalyzedwiththehelpofsomeexamplesfromaccountingandvalua-tionofregulatingservicesofIndianforest.Finally,thepapersuggeststhatgreaterattentionisneededtodocredibleandbettervaluationofregulatingservicessothatinsightsfromthesecanbeusedinunderstandingtheimpactofdegradationofecosystemsonpoorpeople.

  • 标签: 生态系统服务 南亚地区 贫困 证据 生态系统管理 生态系统保护