satellite remote sensing of forest resources， three decades of research development.pdf

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1、ProgressinPhysicalGeography29,1(2005)pp.1–26Satelliteremotesensingofforestresources:threedecadesofresearchdevelopmentD.S.Boyd1,*andF.M.Danson21ResearchandInnovation,OrdnanceSurvey,RomseyRoad,SouthamptonSO164GU,UK2CentreforEnvironmentalSystemsResearch,SchoolofEnvironmentandLifeSciences,Universit

2、yofSalford,ManchesterM54WT,UKAbstract:ThreedecadeshavepassedsincethelaunchofthefirstinternationalsatellitesensorprogrammedesignedformonitoringEarth’sresources.Overthisperiod,forestresourceshavecomeunderincreasingpressure,thustheirmanagementanduseshouldbeunderpinnedbyinformationontheirpropertiesa

3、tanumberoflevels.ThispaperprovidesacomprehensivereviewofhowsatelliteremotesensinghasbeenusedinforestresourceassessmentsincethelaunchofthefirstEarthresourcessatellitesensor(ERTS)in1972.Theuseofremotesensinginforestresourceassessmentprovidesthreelevelsofinformation;namely(1)thespatialextentoffores

4、tcover,whichcanbeusedtoassessthespatialdynamicsofforestcover;(2)foresttypeand(3)biophysicalandbiochemicalpropertiesofforests.Theassessmentofforestinformationovertimeenablesthecomprehensivemonitoringofforestresources.Thispaperprovidesacomprehensivereviewofhowsatelliteremotesensinghasbeenusedtoda

5、teand,buildingontheseexperiences,thefuturepotentialofsatelliteremotesensingofforestresourcesishighlighted.Keywords:biophysicalandbiochemicalproperties,dynamics,extent,forestresources,foresttype,satelliteremotesensing.IIntroductionanalysisandmonitoringoftheEarth’snaturalAnunmannedsatellitewaslau

6、nchedon23resources.OneimportantnaturalresourceJuly1972aspartoftheEarthResourcesbasethathasbenefitedfromdevelopmentsinTechnologySatellite(ERTS)programmesatelliteremotesensinginthethreedecades(laterknownasLandsat).TheMultispectralsincethelaunchofERTS-1isthatofforests.Scanner(MSS)carriedonboardERTS

7、-1wasThispaperreviewshowtheopportunitiesdesignedspecificallyforthecollectionofprovidedbysatelliteremotesensinghavemultispectralremotesensingdataforthebeenexploitedforthecollectionof*Authorforcorrespondence:Tel.,+442380792248;fax,+