“…The specific aims of this paper are (i) to test if a power law, the "fingerprint of fractal geometry" (Bordá-de-Agua et al, 2002;Harte et al, 1999;Ibáfiez et al, 2009;Mandelbrot, 1977;May, 1975;Ostling et al, 2003;San-José and Caniego, 2013;Sizling et al, 2011;Sugihara and May, 1990), can describe the area-richness relationships of vegetation series, pedotypes and bioclimatic belts (a diversities), where the áreas are defined in turn by the áreas of soil associations of basic pedotypes (SMU), the áreas of clusters of SMU based on their basic pedotype content, the áreas of vegetation series or potential natural vegetation (PNV) and the áreas of bioclimatic belts (BB); and (ii) to test the strength of the correlation between the B diversities (Magurran, 2004;Whittaker, 1975) of zones of a map layer described by zones of other layers. This means, according to Mantel (1967), Mantel and Valand (1970) and in terms of similarity theory (Feoli and Orlóci, 2011), quantifying the correlation between the different sets of variables used to describe independently the same set of zones, or in other words to measure the predictivity of one set of variables with respect to another set (Feoli and Orlóci, 2011).…”