Forest Ecosystems

Table 4 Coefficients of fixed-effects diameter increment models

From: Evaluation of different approaches to individual tree growth and survival modelling using data collected at irregular intervals – a case study for Pinus patula in Kenya

Predictor	Modelling approach
Predictor	Regression 1	Regression 2	Optimization
Constant	–6.14591	–5.61685	0.88882
ln(d)	3.41191	2.31925	1.15958
d	–0.15408	–0.05023	–0.08060
BAL	–0.01522	–0.00569	–0.04803
√G	–0.09034	–0.01232	–0.34133
Step	–	0.07507	–

d = diameter at breast height; BAL = basal area in larger trees; G = stand basal area; Step = length of the projection period.

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