Threetypesoflandscapeboundary(forest/pepperfield,forest/cabbagefield,andforest/grassland)wereselectedinthearidvalleyofupperreachesofMinjiangRiver,southwesternChina.Onthebasisofvegetationpersity,thedepthofedgeinfluence(DEI)ondifferenttypesoflandscapeboundarieswasestimatedusingprincipalcomponentsanalysis(PCA)methodandmovingsplit-windowtechniques(MSWT).Theresultsshowedthatinthe5transects,PCAmethodwasabletodetecttheedgeinfluencedepthwith3transects,whileMSWTcouldexplain4transects.ItisconcludedthatPCAandMSWTbothcanbeusedtodetectthedepthofedgeinfluencewithin50mfromtheedgetotheinterior.Similarconclusionsweredrawnintheforestofeachtransectwiththetwomethods,butnosimilarconclusionsweredrawninthepepperfieldofeachtransect.Althoughthetwomethodshaveadvantagesanddisadvantagesrespectively,theyareusefultoolsforcharacterizingedgedynamics.Comparingthetwomethods,MSWTismoresuccessful.
