简介：Inthisarticle,alaboratory-builtexperimentalsystem-laser-inducedbreakdownspec-troscopy(LIBS),isusedtomeasuresoilsamples.Itexploreslandslidesbandsoiloffivetypicalland-slidesinXiangxi(香溪)RiverSectionoftheThreeGorgesReservoirarea,whichincludeBazimen(八字门)landslide,Baijiabao(白家堡)landslide,Jiajiadian(贾家店)landslide,Sixiangxi(泗乡溪)landslideandanunnamedlandslidethathasalreadyslipped.Soilsamplesofthefivelandslidesaretakenindif-ferentlatitudes,andinrelativelyconsistentaltitude.Throughexperimentalmeasurement,theauthorsgetspectrumofthosesoilsamples,andthendoqualitativeandquantitativeanalysesofelements(Mg,Si,K,Al,etc.)inthem.Theauthorsconcludethatmainmetalelementsinthesoilchangeaccordingtodifferentlongitudesandlatitudes,whichopensupanewwayofthinkingforthequantitativeanalysisofthefunctionofsoilandwater,andfortheestablishmentofrelationsbetweenchemicalenvironmentfactorsandsoilengineeringmechanicseffects.