J.Geogr.Sci.2023,33(3):429-448DOI:https://doi.org/10.1007/s11442-023-2090-1©2023SciencePressSpringer-VerlagIdentificationofregionalpatternofclimatechangeriskinChinaunderdifferentglobalwarmingtargetsWUShaohong1,2,CHAOQingchen3,GAOJiangbo1,LIULulu1,FENGAiqing3,DENGHaoyu1,ZUOLiyuan1,2,LIUWanlu1,21.KeyLaboratoryofLandSurfacePatternandSimulation,InstituteofGeographicSciencesandNaturalRe-sourcesResearch,CAS,Beijing100101,China;2.CollegeofResourcesandEnvironment,UniversityofChineseAcademyofSciences,Beijing100101,China;3.NationalClimateCenter,Beijing100081,ChinaAbstract:Climatechangewillbringhugeriskstohumansocietyandtheeconomy.Regionalclimatechangeriskassessmentisanimportantbasicanalysisforaddressingclimatechange,whichcanbeexpressedasaregionalsystemofcomprehensiveclimatechangerisk.Thisstudyestablishesregionalsystemsofclimatechangerisksundertheproposedglobalwarmingtargets.ResultsofthisworkarespatialpatternsofclimatechangerisksinChina,indicatedbythedegreeofclimatechangeandthestatusoftheriskreceptors.Therefore,therisksshowsignificantspatialdifferences.Thehigh-riskregionsaremainlydistributedinEast,South,andcentralChina,whilethemedium-highriskregionsarefoundinNorthandsouth-westernChina.Underthe2°Cwarmingtarget,morethan1/4ofChina’sareawouldbeathighandmedium-highrisk,whichismoreseverethanunderthe1.5°Cwarmingtarget,andwouldextendtothewesternandnorthernregions.Thisworkprovidesregionalriskcharacteristicsofclimatechangeunderdifferentglobalwarmingtargetsasafoundationfordealingwithclimatechange.Keywords:regionalsystemofcomprehensiveclimatechangerisk;globalwarmingtargets;top-downandbot-tom-upmethods;spatialpattern;riskreceptor1IntroductionSincetheIndustrialRevolutionofthe19thcentury,thedevelopmentofhumansocietyandeconomyhascontributedtoclimatechange.Climatechangehasattractedincreasingatten-tionfromglobalgovernments,academia,andthepublic(Edenhoferetal.,2007;IPCC,2007,2012,2014a,2014b;Giddens,2009;Pindyck,2013).Thesixthassessmentreport(AR6)launchedbytheIPCCshowsthatglobalmeantemper...
