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1、NASANATIONALAERONAUTICSANDSPACEADMINISTRATIONMANNEDSPACECRAFTCENTERFACTSPUBLICAFFAIRSOFFICEHouston,TexasEARTHRESOURCESSpeciallyequippedaircraftplayabigroleinNASA'sEarthResourcesprovidedfromgroundandspacemissions.TheMannedSpacecraftSurveyProgram,bringingbackphotographsanddatatoaugmentthatCenteris
2、inthebackground.CHANNEL1UlTRAVIOlETBLUEGREENREDINFRARED",--ROTATINGG-_MIRRORRADIATIONFROMGROUNDAllWAVELENGTHSAmultispectraltelevisioncamerosystemaboardtheEarthResourcesvastcollectionofforests,crops,bodiesofwater,andgeologicalandTechnologySatellitewillrecordtheplanet'scolor"signature,"frommineral
3、ogicolpointsofinterest.whichground-basedtechnicianscanidentifyandanalyzetheworld's"WearedeterminedthatthedecadeofthetheEarth'sresourceshaverisenandseemlikelyseventieswillbeknownasthetimethiscountrytocontinuetosoar.Bytheyear2000,itisesti•regainedaproductiveharmonybetweenmanandrnatedthattheworld's
4、populationwillbeovernature."6billion;todayitstandsatabout3billion.SoPresidentRichardM.Nixon,januar!ll,1970.onechallengethatfacesmankindwithinthenext30yearsistodoubletheentirefoodproductioncapabilitythathasbeenachievedsincetimebegan.SophoclesfoundtheEarth"rugged"andSpaceprogramssuchasl'imbus,Gem
5、ini,and"allnourishing."CenturieslaterShakespeareApolloshowthatcertainphenomenarelatedtoEarthcalledita"goodlyframe."canbebetterunderstoodwhenviewedfromagreatdistance.Forthefirsttime,manhastheabilityButnowmanypersonsfear,liketheDirectorofsurveying(remotesensing)largesectionsoftheoftheHarvardCenter
6、forPopulationStudies,thatEarthanditserivironmentwithinaver'limitedthe"21stcenturymaywitnessaworldofhalf•timeframe..starved,depressedhumanmasses,gaspingforair,Earthresourcesaredefinedhereasthosenatu•shortofsweetwater,strugglingtoavoidoneanother,rallyoccurringmaterials,suchasmineraldeposits,livin
7、gatadegradedsubsistencelevel...."timberlands,cropsandfreshwater,andculturalSpaceflighthasshownnotonlyhowbeautifulresourceswhichareofvaluetomankind.Compre•andsmalltheEarthisbutalsohowsimilaritishensivestudyoftheEarth'ssurface
