Height-Diameter Modeling of Cinnamomum tamala Grown in Natural Forest in Mid-Hill of Nepal

Table 2

Models selected for further evaluation, their designation, and parameters of the models.

Model	Designation	Parameter	Reference
	M1	2	[7]
	M2	3	[33]
	M3	3	[36]
	M4	2	[37]
	M5	2	[38]
	M6	2	[39]
	M7	2	[1, 2]
	M8	2	[40]
	M9	2	[41] cited in [13]
	M10	3	[42]
	M11	2	[43]
	M12	2	[40, 44]
	M13	3	[45]
	M14	3	[46]
	M15	2	[2]

is total height (m) of tree i = 1, 2, 3,…,n, D-diameter at breast height (cm), b₀, b₁, and b₂ are parameters to be estimated, 1.3 is added to avoid prediction of zero height when D approaches zero, and is a random error term which is assumed to be normally and identically distributed with mean 0 and variance [NID (0, σ²)].