Table 3.

Summaries of models predicting PD, NRI, and PE for the North, East, and West forest regions using temperature, water, and postglacial climate stability measures. Predictors were summarized in three groups: I. Temperature relations: MAT, TMIN, or TES; II. Water relations: WBL or PRS; III. Stability relations: ACC, VT, or EHET

	Angiosperms				Gymnosperms
	Temperature	Water	Stability	R 2	Temperature	Water	Stability	R 2
PD North	MAT 0.818	WBL −0.226	EHET 0.115	0.76	MAT 0.463	WBL −0.012	VT −0.039	0.78
		PRS −0.075				PRS −0.053	EHET 0.024
PD West	MAT 0.452	WBL –0.001	EHET 0.162	0.78	MAT 0.004	WBL 0.194	EHET 0.122	0.29
		PRS 0.030			TES 0.004	PRS 0.001
PD East	MAT 1.027	WBL 0.019	EHET 0.173	0.85		WBL 0.096	ACC −0.630	0.76
		PRS −0.067				PRS −0.013	EHET 0.188
NRI North	MAT 0.284	WBL −0.069	VT −0.072	0.29		WBL 0.373	ACC 0.738	0.36
	TES 0.038	PRS 0.023	EHET 0.053			PRS 0.128	EHET −0.008
NRI West	TMIN −0.777	WBL 0.046	VT 0.006	0.46	TMIN −0.039	WBL −0.354	ACC −0.013	0.08
		PRS −0.081	EHET 0.004		TES −0.006	PRS −0.161	VT 0.011
NRI East	TES 0.636	WBL −0.003	VT 0.083	0.76	MAT 0.096	WBL 0.062	ACC 0.515	0.44
		PRS −0.167				PRS −0.004	VT 0.023
PE North	MAT 0.785	WBL −0.152	EHET 0.114	0.74	MAT 0.538	WBL 0.000	VT −0.014	0.78
		PRS −0.032				PRS −0.156	EHET 0.027
PE West	MAT 0.509	WBL 0.073	EHET 0.144	0.82		WBL 0.137	ACC 0.141	0.49
		PRS 0.056				PRS 0.010	EHET 0.165
PE East	TMIN 0.822	WBL −0.088	VT −0.224	0.91	TES −0.020	WBL 0.128	ACC −0.049	0.26
		PRS 0.022			MAT −0.011	PRS 0.001	VT −0.168

Refer to Table 2 for abbreviations. Standardized coefficients of SAR_err models were presented, and they were averaged from multiple models by Akaike weight. Predictors' importance factors were also based on Akaike weight: A predictor was shown in bold with its importance > 0.5 and omitted with <0.1. In addition, R ² values of the best OLS models were given to indicate the model's explanatory capability.