Table 3.

Fitting parameters and inspection indexes under different drought conditions.

Group	Different models	α	β	R	R2	Adjustment R2	RMSE	Optimal choice of model
CS	①	1.175	0.832	0.846	0.716	0.696	0.133	√
LD	①	1.175	0.832	0.649	0.421	0.376	0.183	×
	②	1.048	0.859	0.910	0.828	0.814	0.095	√
MD	①	1.175	0.832	0.683	0.466	0.425	0.130	×
	②	1.136	0.787	0.841	0.707	0.684	0.103	√