The spatial distribution of soils across : A fractal …
The geographical extent of each particular type was mathematically idealized as a two-dimensional flat surface. The digital map of was overlaid with grid layers of different linear sizes (20, 40, 80, 160, 200, 800, 1600 and 2000 km), providing three orders of magnitude—i.e. from 2 × 10 1 up to 2 × 10 3.