NASA STI Repository (National Aeronautics and Space Administration) · 1973 · 2.9K citations · 0 references
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Natural ResourcesEarth SciencesLandscape EcologyRangeland MonitoringRemote SensingTerrestrial EcologyInfrared Remote SensingRangeland Condition AssessmentRemote Sensing Of RangelandsVegetation Cover AssessmentVegetation IndicesVegetation MonitoringPhenological IndicatorsPhenological Vegetation IndicesRadianceRemote Sensing Of PhenologySatellite-based Vegetation MonitoringSpectral RadianceSun Angle CorrectionVegetation Condition Monitoring
The Great Plains Corridor rangeland project utilizes natural vegetation systems as phenological indicators of seasonal development and climatic effects upon regional growth conditions. A method has been developed for quantitative measurement of vegetation conditions over broad regions using ERTS-1 MSS data. Radiance values recorded in ERTS-1 spectral bands 5 and 7, corrected for sun angle, are used to compute a band ratio parameter which is shown to be correlated with aboveground green biomass on rangelands.