Fig. 2

Climatic variable selection and trend analysis. a Principal component three-dimensional load diagram. b Correlation matrix heat map of 22 environment variables. c Jackknife test of the relative importance of environmental variables for P. pseudocerasus in China. d Response curves of Bio2, Bio8, Bio14, Bio15, and Bio18. e Changes in important climate variables for SSP126-2090s and SSP585-2090s. In a, each ball in the three-dimensional coordinate system represents an independent sample, with different colors denoting different environment variables. In i-n, the dashed line indicates outliers with a factor of 1, the box range represents standard deviation, the solid line in the middle of the box denotes the median, the white squares indicate averages, and the grey dots represent the data for each distribution