2912Vol.29No.12201512JournalofAridLandResourcesandEnvironmentDec.20151003-7578201512-131-08doi10.13448/j.cnki.jalre.2015.4133S*730000。2010Landsat-ETM+3S。2010。。139.6km185.5km39°41'07″N~40°31'14″N105°59'45″E~106°41'53″E0.9991km2。P931.3A、、1。、、。2-56-9。、、、10-17。13、14、15、16、17、18。。3S、19-22。3S。123。14、、、、、。22。*2014-11-12014-12-5。J121006541371114201209034。1987-GIS。E-mailjiap09@lzu.edu.cn.1962-、。E-mailwangna@lzu.edu.cn.。15%25%~20%321%~50%、、450%、。、、、、、、、、、、、、、、、、、、、82224。1Figure1TheexpeditionroutemapofUlanBuhDesert21125-29Landsat-ETM+、Arcgis10.0、ENVI5.0、、GoogleEarth、、。2.12010Land-sat-ETM+7~9。、、、Albers。30mDEMASTER。、、、ENVI5.0。2.220134224291。、8、81。2.32.3.17、4、2。7、4、2。、、、2。·231·291Table1Comparisonbetweensatelliteimagesoftrainingareasandfieldlandscape2.3.210DN2。2ETM+7DN22。DNND-DI、FVCMSAVI。NDDINDVI22NDDI=TIR-NIR槡TIR+NIR1FVCNDVI30NDVI=NIR-R槡NIR+R2FVC=NDVI-NDVIminNDVImax-NDVI槡min3·331·123S2ETM+Table2InterpretedtypesandqualitativesignsofUlanBuhDesertonLandsat-ETM+imagesMSAVI30MSAVI=NIR+0.5-NIR+0.52-2NIR-R槡4R-ETM+3DNNIR-ETM+4DNTIR-ETM+6DN。ENVI5.0NDVI、FVC、MSAVI。ENVI3。3。2.3.37、4、2。GoogleEarth15·431·29。ArcgisEditor。OverallAccura-cy=87.5805%Kappa0.8401。33.14。、。40°55'42.29″N106°41'42.86″E。。。G110。G11040°27'24.38″N107°04'27.76″E。。40°18'49.07″N-39°34'36.04″N。。。、、2ETM+Figure2SpectralcurvesofUlanBuhDesertfromETM+images3NDDI、FVC、MSAVIFigure3VectordataandNDDIFVCMSAVIoverlayanalysis3Table3QuantitativesystemofvisualinterpretedindicatorsNDDIFVCMSAVI0.3~0.6<0.05-0.5~-0.40.2~0.30.05~0.20-0.4~-0.30.1~0.20.21~0.50-0.3~-0.20~0.1>0.50-0.2~-0.1。·531·123S4Figure4InterpretedclassifiedmapofUlanBuhDesertfromETM+images。39°21'22.54″N105°43'29.28″E5。。、、。、、、、。30mDEM。。、、、。3.2Arcgis。0.9991km21.0750km2130.0759km2。、31-32。。33。、、。40.9991km2。3377.06km233.80%2149.14km221.52%、4091.15km240.94%4ETM+Table4ThestatisticalresultsofUlanBuhDesertinterpretedfromLandsat-ETM+imageskm2%3377.0633.802149.1421.524091.1540.94373.943.749991.29100373.94km23.74%。·631·295Figure5TheschematicdrawingofsouthboundaryforUlanBuhDesert4。、。、、、、、、-。139.6km185.5km39°41'07″N~40°31'14″N105°59'45″E~106°41'53″E0.9991km2。Landsat7-ETM+2010。。1.J.1984423-7.2.J.1973292-107.3.J.2003232165-170.4.J.1997346-49.5.J.1999193223-227.6.J.200425218-22.7.J.2007245610-617.8.J.2002163114-117.9.J.2011281168-174.10.J.200121156-65.11.50J.2004592203-212.12.J.2006264507-516.13.J.1999143229-234.14.J.2008271109-118.15.M.2009568-573.16.J.1998642-44.17.M.2005.18.40D.2013.19.3SJ.20026330-336.20.3SJ.2013586-8994.21.GISLUCCJ.2003262185-191.22.J.20102991087-1094.·731·123S23.M.1980.24.J.1997173237-242.25.J.199414284-89.26.J.2003232106-110.27.GISJ.200793132-134.28.J.20074341-6.29.3SJ.2002176330-336.30.M.2009182-186.31.50aJ.200822491-95.32.J.2000456636-640.33.D.2008.AstudyontherangeandareaofUlanBuhDesertbasedon3StechnologyJIAPengWANGNai'angCHENGHongyiLIZhuolunNINGKaiZHANGXunheLIANGXiaoyanNIUZhenminCollegeofEarth&EnvironmentalScienceCenterforHydrologicCycleandWaterResourcesinAridRegionLanzhouUniversityLanzhou730000ChinaAbstractThe2010LandsatETM+remotesensingimagedataRSGISandGPStechnologywereappliedtore-positionthescopeandboundariesoftheUlanBuhDesertbasedonthenewachievementsandresearchinthefieldoftheUlanBuhDesert.Aftertheimageenhancementsynthesisgeometricprecisioncorrectionmosaicandsplitunderthe1100000reliefmapultimatelywegottherangeandareaofUlanBuhDesertbyusingENVI5.0andArcgis10.0software.TheresultsshowthattheUlanBuhDesertlocatesinthesouthoftheHelanMountainnorthofJiLantaiandChaHaersumutheeastofWuSulawumountain-HaWulamountainHaoWen-duoermountainthewestoftheYellowRiverDengKou-LinHe.UlanBuhDesertis139.6kmlongfromeasttowestand185.5kmfromnorthtosouthrangingfrom39°41'07″N-40°31'14″N105°59'45″E-106°41'53″E.TheareaofUlanBuhDesertis0.9991millionkm2comparedwiththedataintheMiddleof90'stheareaofUlanBuhDesertdecreased0.759×103km2.ThemainreasonscausingthechangewerehumanactivityandthesurroundingoasisprocessesinthenortheastofUlanBuhDesert.KeywordsUlanBuhDesertboundariesareaoasificationremotesensing·831·29