Table 4. Parameters, standard errors, and performance metrics of biomass allometric equations based on the power function model for the young tree group by independent variables.

Independent variable	Parameters			SEE^a	Adjusted R²	RMSE^b	MBE^c
Independent variable	α	β₁	β₂	SEE^a	Adjusted R²	RMSE^b	MBE^c
DRC^d	28.1402	2.0293	-	1.5210	0.8935	100.0943	3.6273
H^e	0.0011	2.3236	-	1.5060	0.1898	276.0763	84.3704
DRCㆍH	0.1966	1.1910	-	1.2100	0.9047	94.6881	29.4355
DRC²ㆍH	1.2131	0.7651	-	1.2670	0.9506	68.1624	16.8551
DRC, H	0.1256	1.1019	1.2940	1.2240	0.8645	111.3303	36.4808

SEE: Standard error of estimate
RMSE: Root mean squared error
MBE: Mean bias error
DRC: Diameter at root collar
H: Height.