Fig. 2

Stages of the analysis to study the stability of ALS metrics produced for three different ALS data sets that were taken over the same Eucalyptus plantation on the same day and that had only three technical flight parameters altered: elevation, laser power, and pulse frequency rate. Two sets of best predictive models were obtained for each data set based on two approaches: a basic approach using noncollinear metrics and an exhaustive search, and a second approach that added a pairwise Kolmogorov-Smirnov test to select stable metrics