Fig. 4From: A generalized self-thinning relationship for multi-species and mixed-size forestsRelationship between site index and fertility parameters. Relation between the harmonic mean of species fertility parameters K i,p approximated by the model presented in Eq. 7 and fertility given by the dominant height (reference age, 100 years). A simple linear relationship has been drawn whose R 2 is indicated. Intercept and slope are −22.7 and 1.57, respectivelyBack to article page