Radiance

Ecology

Biology

Agroforestry

Geotechnical engineering

Vegetation (pathology)

Physical geography

Geology

Rangeland

Oceanography

Geography

Hydrology (agriculture)

Biomass (ecology)

Environmental science

Remote sensing

Medicine

Atmospheric sciences

Phenology

Pathology

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.

Monitoring vegetation systems in the great plains with ERTS