Xiao_Agriculture 定量遥感班课件

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1、RemoteSensing---AbriefintroductionNASAEarthRemoteSensingObservatoriesGPMEarthObservingSystem(EOS)In1991NRCendorsedEOSplan($30billion,20-yearslong)2MODISimagefromTerra;TongleSapLake,MekongDelta(Cambodia/Vietnam)A8-daycomposite(5/25-6/1,2002),500-mspatialr

2、esolutionRed/Green/Blue(band1-4-3)SWIR/NIR/Red(band6-2-1)11OpticalsensorsforobservationsofvegetationTM/ETM+AVHRRVEGETATION(VGT)MODISTM1(450–520)B0(430–470)–BlueB3(459–479)TM2(520–600)B4(545–565)TM3(630–690)CH1(580–680)B2(610–680)--RedB1(620–670)*TM4(760–

3、900)CH2(725–1100)B3(780–890)--NIRB2(841–876)*B5(1230–1250)TM5(1550–1750)B4(1580–1750)–SWIRB6(1628–1652)TM7(2080–2350)B7(2105–2155)Spatialresolution:1-km1-km250m*,500m30mRevisit:16-daydailydailydailyDatafusionfrombothopticalimageandSARimageMulti-spectralo

4、pticalsensorL-bandSyntheticApertureRadar(SAR)PALSARLandsat12/6/2006ETM+1/21/20074/28/2001Band7-4-3LandscapeinKendal,Java,Indonesia.InPALSARimages,openwater(darkcolor),fishpondsandricepaddies(greenandpinkcolor)couldbevisuallydetectedeasilyfromthistwo-date

5、compositeimage.GreencolorindicatescropfieldsfloodedinDecember2006butplantedinJanuary2007;PurplecolorindicatescropfieldsplantedinDecember2006butharvestedinJanuary2007.Thisimagecoverapproximately~20kmwidth.GlobalMappingofAgricultureInputdatasets:MODISimage

6、s,2/2000topresent500-mspatialresolution,8-daytemporalresolutionGlobaldataproductsofagriculture(500-m):1.Croppingintensity,cropcalendar2.Irrigation3.Paddyrice4.Grossandnetprimaryproduction(daily)5.Transpiration(daily)GlobalMonitoringandForecastingofAgricu

7、lture(http://www.eomf.ou.edu)Satellite-basedMapping&MonitoringofAgriculturalIntensificationStructuralperspective---leafareaindexNormalizedDifferenceVegetationIndex(NDVI)ρ-ρnirredNDVI=ρ+ρnirredBiochemicalperspective---chlorophyll&waterEnhancedVegetationIn

8、dex(EVI)leafareaindexNDVIρ−ρnirredEVI=G×ρ+C×ρ−C×ρ+LLSWIleafwaternir1red2blueLandSurfaceWaterIndex(LSWI)leafchlorophyllEVIρ-ρnirswirLSWI=ρ+ρnirswirMODIS8-daycompositesofsurfacereflectanceproduct(MOD09A1)NDSINDVI,EVI,LSWISno