资源描述：
《Reducing Drought Risk-Bridging Theory and Practice》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、ReducingDroughtRisk:BridgingTheoryandPractice123MichaelJ.Hayes;OlgaV.Wilhelmi;andCodyL.KnutsonAbstract:DroughteventsacrosstheUnitedStatessince1995illustratethecountry'scontinuingvulnerabilitytodrought.Of®cialsarebeginningtorecognizetheneedforenhancedm
2、itigationactionstoreducetheincreasingeconomic,environmental,andsocialimpactsofdroughts.Onewaytobetterunderstandaregion'sdroughtvulnerabilityandidentifytheappropriatemitigationactionstotakeistoconductadroughtriskanalysis.However,droughtriskcanbeaconfus
3、ingconceptformanyplanners.Forthisreason,asimpli®ed,¯exibleframeworkforconductingadroughtriskanalysisispresented.Thisframeworkisbasedonacombinationofnaturalhazardstheoryandinteractionswithavarietyofdroughtplannersinthe®eld,andisintendedtobeapractical,a
4、ction-orientedmodeltoassistdroughtplannersonavarietyofpoliticalandgeographicscales.Severalcasestudiesarealsodiscussedtodemonstratetheapplicationofsuchamodel.DOI:10.1061/~ASCE!1527-6988~2004!5:2~106!CEDatabasesubjectheadings:Droughts;Risk;Riskanalysis;
5、Planning;Models.Introductionnaturalhazardsandtoexplorealternativecoursesofaction~Natu-Despitesigni®cantimprovementsinweatherforecastingandral2001!.AccordingtotheCaucus,thecurrentfederal-state-localwarningsystems,governmentprograms,publiceducation,andr
6、elationship,whichprovidesresourcesafteradisasterandverythedevelopmentofnewtoolsandtechnologies,thecostsresult-fewmitigationresourcesbefore,requiresseriousattention,andingfromdisastersaroundtheworldandintheUnitedStatesaretheybelievethattheemphasisneeds
7、toshifttowardmitigationstillhighandrising,indicatinggrowingsocietalvulnerabilitytoeffortstopreventcitizensfrombecomingdisastervictimsinthenaturalhazards~Changnonetal.2000;Wilhite2000a;Bender®rstplace.Mitigationinthiscontextisgenerallyconsideredtobe200
8、2!.Asimilartrendofincreasingvulnerabilityexistswiththeactionstakenbeforeanaturalhazardeventthatwouldpoten-droughts~Changnon1993,2000!illustratedbyrecentdroughtstiallyreducethenegativeimpactsassociatedwiththeevent.InacrosstheUnitedStatessince19
