FIGURE 6  Potential distribution area of each species predicted by the MaxEnt model. The habitat suitability will be evaluated as high, if HIS value is between 0.40 and 0.60, and optimal if HIS value is between 0.60 and 1.00
In addition, we adopted ArcGIS 10.4 software to superimpose the appropriate potential distribution areas of each species (HSI ≥ 0.4) to obtain the potential distribution pattern of species richness (Figure 7). The results showed that on the grid scale with a resolution of 0.05° × 0.05°, the potential species richness of each grid ranged from 0 to 12. Through a combination of the distribution of the existing national and provincial nature reserves in Northwest Yunnan together with the administrative division of this region (for more details, see Ye et al., 2020a), we found that part of the grids with the highest potential species richness were located near Baima Snow Mountain and Gaoligong Mountain NNRs, while the other part of the grids with the highest potential species richness were situated in Shangri-La County (Figure 7).