PROCRUSTES ROTATION AS A WAY TO COMPARE DIFFERENT SAMPLING SEASONS INSOILS

Procrustes rotation is a powerful technique to compare subspaces. In t his paper, Procrustes rotation is used to select the minimum number of original variables that are important to describe a system and to sta tistically compare different sampling seasons. In the latter case, Pro crustes rotation methodology has been applied to determine similaritie s and differences between sampling seasons in urban soils. Four season s (during one year) were carried out to develop a monitoring scheme to control metal pollution in a medium-city area. Future efforts to moni tor metal pollution will be based on analyzing only two or (at most) t hree metals, i.e., Pb, Co, and Cd.