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