Biomass Modelling of Androstachys johnsonii Prain: A Comparison of Three Methods to Enforce Additivity

Table 3

Fit statistics of SUR using the system of the best linear models.

Tree component	Weight function	Adj. (%)	(kg)	CV (%)	MRSE (kg)	MR (kg)
Roots		56.00	34.9040	73.1758	0.2750	0.3227^*	0.1503
Stem wood		22.17	116.6327	94.0069	0.5181	1.1685^*	1.7454
Stem bark		−29.22	18.1996	128.1809	0.8488	0.1751^*	0.0432	1.0028
Crown		81.50	28.5040	48.8144	1.4814	−0.1298^*	0.1087
Total tree		63.19	249.5561	102.1272	0.2332	1.5366^*	14.4049

“*” = significant at α ≥ 5%; “ ” = not significant at any probability level.