Forest Ecosystems

Table 2 Model parameters. R2 and RMSE have been calculated for the back-transformed non-logarithmic height increment

From: Height increment of understorey Norway spruces under different tree canopies

Predictor	Coefficient	Estimate
Constant	b₀	−0.437
√h	b₁	0.162
SI	b₂	0.0138
P	b₃	−0.00653
G	b₄	−0.0108
G _s	b₅	−0.0335
√D	b₆	0.157
	s(u_j)	0.466
	s(e_ij)	0.533
	R2 Fixed	0.510¹⁾
	R2 Full	0.773⁽²⁾
	N	5601
	RMSE Fixed	9.45⁽¹⁾
	RMSE Full	6.43⁽²⁾

⁽¹⁾Calculated for the fixed part of the mixed-effects model.
⁽²⁾Calculated for the full mixed-effects model, including the random plot factor.

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