Figure 4

Comparisons of soil properties between inaccessible and accessible forest and grassland. (a–f) Comparisons of exchangeable cations (a) and pH-values (b) as indicators for nutrient availability in soils, and differences in depth (c), bulk density (d), mass (e), and rock content (f) of soils. Analysis with linear mixed models found no significant relationship with human impact for any of the properties apart from Na⁺, whilst Al³⁺, K⁺, Ca²⁺, Mg²⁺ had a significant relationship with vegetation type (Table S17).