简介：Withworldpopulationgrowtharablelandareaisdecreasing.Salinesoilisanimportantnaturalresource.Howeverithasnotbeenwellreclaimedowingtoadverseconditions.Forestationisonewayofsaltysoilutilization;ontheotherhand,itcanimprovesoilqualityaswell.Themechanismofsalinitytoleranceisthebasisfortreespeciesselectionwhenplantinginsaltaffectedsoil.Differentplantshavevariouswayofsalinitytolerance,somearesalt-exclusion,e.g.Elaeagnusangustifolia;somearesalt-secretion,e.g.Tamarixspp.;somearesalt-dilution,e.g.Hordeumvulgare;somearesalt-avoidance,e.g.Rhizophoraapiculata.Treesarefavorable,whicharesalttolerantanddroughtorwaterloggingtolerant,aswellasgrowfast.Aftertreespecieshavebeendecided,sitepreparationincludingchangeorexchangeofsoilisnecessary.Meanwhilesuitabledensityoftreesandplantingtimemustbecarefullyconsideredintermsofsoilconditionsandclimaticcharacteristics.Nowalargescaleofforestshasbeenestablishedinsalt-affectedsoilinChinabythemeansdiscussedinthepaper,andprotectforestsystemalongcoastplaysimportantrolesinsocio-economicsustainabledevelopmentandimprovementofeco-environment.

简介：Timedomainreflectometry(TDR)isahighlyaccurateandautomaticmethodfordeterminationofporousmediawatercontentandelectricalconductivity.ThispaperfocusesonthebasicprincipleofTDRtechnologyanditsapplicationinCaijiachuanwatershed,theLoessPlateau,China,thecompositionandstructureofasetofTDR-TRIME.Theinstallation,measurementandcalibrationofTRIME-TDRintheLoessPlateauhasbeenintroduced.ThefactorsthatcaninfluencetheveracityofthemeasurementbyTDRhavealsobeenanalyzedinthearticle.