3.5 Geographical Changes and PAs
Overlapping profiles between macaques’ geographic distribution and the existing PAs are listed in Table S3. Their 87% distribution in 1970-2000 and the 2050s (SSP2 and SSP5) are /would not be covered by current PAs. Further, based on the highly suitable habitat areas and PAs’ resistance layers, we established the potential passing corridors for macaques in different periods (Figure 5). As for 1970-2000, macaques should have 164 passages in highly suitable habitats, principally in Central and Southwest (Figure 5A). As for SSP2 in the 2050s (Figure 5B), compared with Figure 5A, such corridor number (115) would decrease significantly in the southern Central and Southwest regions. Referring to SSP5 in the 2050s (Figure 5C) and compared with Figure 5A, that number in northern Central would decrease but increase in southern Central. However, corridor lengths would become shorter following more fragmented habitats. As a result, the period’s corridor number would be 182.