Basal area is a good proxy for both biomass and crown width, two important factors in determining whether an individual can dominate the space and resources around it. PCA determined that 70 percent of the variance could be accounted for by the first five of nineteen principal components, with the first component alone accounting for 21.6 percent. Note that as the proportion of variance explained decreases, the interactions within components becomes more complex. Eigenvalues of the correlation matrix. Structural Assembly Rules.
Rules are our interpretation of what factors the corresponding principle components are tracking.
Unsaturated Soils with large amounts of woody vegetation. Dense Shrub Thickets with an abundance of cedar and red bay. Figure 6 shows the plots on Parramore that show some internal stucturing based on the above three rules. Prior to classification the image was resampled to 5-m resolution using a cubic convolution filter to reduce the abrupt boundaries between pixels for display purposes. Spectral signatures were chosen for areas of known vegetation type based on visual inspection of areas outside permanent plots.