Additional file 4 of Assessment of suitable cultivation area for Paris polyphylla var. chinensis and var. yunnanensis under anthropogenic disturbance based on ensemble modeling and germplasm identification

Supplementary Material 4. Fig S4. The ecological niche overlap of Pc and Py. (A) The green and pink shadings represent densities of species occurrences, blue represents overlap. (B) Correlation and contribution of each variable to the first two components of the PCA-env. (C) histograms of niche equivalency distributions, diamond lines represent observed values. p-value = 1 indicating statistically significant niche differentiation.