Fig. 5
From: Driving factors of tree biomass and soil carbon pool in xerophytic forests of northeastern Argentina
Correlation coefficient (Pearson’s r) of the relationship among carbon pools (tree biomass carbon, soil carbon and total carbon) and different factors. pH  soil pH, C:N  soil C:N ratio, CEC  cation-exchange capacity, CLC  clay content, SLO  slope, ELE  elevation, PND  relative dominance of P. nigra, TCC  tree canopy cover, TD  tree density and BA  basal area. *significant (p < 0.05), and **highly significant (p < 0.01)