Allometric Models for Estimating Tree Volume and Aboveground Biomass in Lowland Forests of Tanzania

Table 2

Parameter estimates and performance criteria of five ht-dbh models.

Site	Model	Parameter estimates			Error	RMSE		AIC
		Dindili	1	19.5933					0.0415	0.9023	0.314 × dbh^0.6304	2.65	0.67	402.76
2	24.0599		18.3594	5.6557	0.317 × dbh^0.6271	2.64	0.68	402.32
3	17.9649		2.0739	0.0797	0.317 × dbh^0.6315	2.65	0.66	404.64
4	0.4239		0.8893	0.0398	0.318 × dbh^0.6264	2.64	0.68	402.28
5	19.8856		0.0554	0.9246	0.315 × dbh^0.6296	2.65	0.67	402.7
Rondo	1	23.3447	0.0639	1.0728	2.239 × dbh^0.1469	2.90	0.61	1593.02
	2	27.5692	11.2866	2.0427	2.374 × dbh^0.1306	2.92	0.61	1595.18
	3	22.8525	1.9824	0.0888	2.145 × dbh^0.1591	2.89	0.61	1591.6
	4	1.9292	0.3691	0.0369	2.399 × dbh^0.1273	2.92	0.61	1594.98
	5	23.2808	0.0534	1.0454	2.233 × dbh^0.1477	2.904	0.61	1592.98
All	3	21.2679	2.1776	0.0993	1.681 × dbh^0.2539	3.03	0.57	2099.2
	4	2.3468	0.3489	0.0398	1.835 × dbh^0.2088	3.06	0.57	2101.98