ArticleAcceleratingglobalmountainforestlossthreatensbiodiversityhotspotsGraphicalabstractHighlightsdForestlossinmountainareasworldwideisrapidlyacceleratingdAgriculture,fire,andcommercialforestryaremajorcausesofmountainforestlossdTropicalmontaneforestsweremostaffected,occurringincriticalbiodiversityareasdProtectedareashavereducedmountainforestlossinbiodiversityhotspotsAuthorsXinyueHe,AlanD.Ziegler,PaulR.Elsen,...,JosephHolden,DominickV.Spracklen,ZhenzhongZengCorrespondencezengzz@sustech.edu.cnInbriefMountainforestlosssignificantlyacceleratedinthepasttwodecadesworldwide,includingwithintropicalsensitivebiodiversityhotspots.Whileprotectedareaswereeffectiveinp...