3.4 Analysis of future habitat changes
The areas and proportions of the four habitats of B. gargarizansby 2050 and 2070 are shown in the Table S7. Compared with the current distribution, the future suitable habitat of B. gargarizans will be reduced in 2050, and the ranges of highly suitable habitat, medium suitable habitat, poorly suitable habitat are -1.3 ~ 0, -3.41 ~ -0.68, and -3.98 ~ 1.32, and the mean values are -0.72, -2.43, and -1.42 respectively. The suitable habitat of B. gargarizans will shrink further in 2070, and the ranges of highly suitable habitat, medium suitable habitat, poorly suitable habitat are -1.42 ~ -0.37, -3.71 ~ -1.59, and -3.94 ~ -0.03, and the mean values are -0.93, -2.71, -2.04 respectively(Fig.4). And the overall change trend and degree of suitable habitats of B. gargarizans in China is shown in Fig.5 and Table S8. In addition, the potential distribution area of Chinese toad in the future shows a trend of fragmentation, which is gradually serious over time, and this trend is related to RCPs to a certain extent (RCPS8.5 is the most serious)(Fig. S1)