Allometric Equations for Estimating Silk Oak (Grevillea robusta) Biomass in Agricultural Landscapes of Maragua Subcounty, Kenya

Table 12

Allometric equations for estimating foliage using DBH.

Function	Equation	MRE	R^2	SEE
Exponential	F = 4.795e^0.045DBH	2.74	0.97	0.24
Logarithmic	F = 3.62ln(DBH) + 4.020	0.02	0.84	0.22
Polynomial	F = -0.031DBH^2 + 1.270DBH + 3.235	-1.83	0.99	0.58
Linear	F = 0.295DBH + 8.452	0.003	0.97	0.23
Power	F= 2.213DBH^0.596	-2.37	0.98	0.23