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

Table 2

Coefficients of regression of SUR using the system of the best linear models.

Tree component	Weight function	(±SE)	(±SE)	(±SE)
Roots		0.1404 (±0.5950)	0.0046 (±0.0002)^*
Stem wood		0.1025 (±0.4193)	0.0070 (±0.0001)^*
Stem bark		0.1076 (±0.3150)	0.0001 (±0.0001)
Crown		−1.8559 (±1.5017)	0.1124 (±0.0044)^*
Total tree		−1.5053 (±1.8765)	0.0117 (±0.0002)^*	0.1124 (±0.0044)^*

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