The code used for analysis, mammalian species occurrence points, prediction accuracy(AUC), and prediction distribution. Specifically, The main nodes are named "network efficiency.R" and "network efficiency_random.R", which can be run in RStudio software (download at https://posit.co/), and the files "hfp_expanded.csv" and "EN_length_expanded.net" are example data. "Terrestrial mammalian species occurrence points.csv" is the latitude and longitude coordinates of occurrence records. "AUC_prediction accuracy of Maxent.xlsx" is the prediction accuracy of each species in the Maxent model. "all_species_maxent.zip" is the composite terrestrial mammalian species distribution of equal weight overlapping the spatial distribution of each species ("each_species_maxent.zip").