Abstract

An investigation was conducted with the objective to demonstrate the importance of productivity to the relationship between green biomass and a bidirectional reflectance ratio. Using bidirectional reflectance data derived photographically from 22 sets of near vertical aerial photography and 56 sets of oblique ground photography, it was determined that the amount of bidirectional reflectance ratio variance accounted for by green biomass could be increased by around 6 percent with the addition of productivity. On a pasture site with low green biomass but high productivity, the bidirectional reflectance ratio was higher than for a high green biomass pasture site with lower productivity.