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Table 4 Parameter estimates and AIC values for log-transformed scaling (Log N = alogD + b) and negative exponential (Log N = aD + b) functions describing the size-density distributions of the three sites Yangambi, Yoko, and Yambela

From: Model performance of tree height-diameter relationships in the central Congo Basin

Sites

Model

a (SE)

b (SE)

AIC

Yangambi

Log N = alogD + b

−2.043 (0.116)

4.76 (0.18)

−27.7

 

Log N = aD + b

−0.026 (0.001)

2.64 (0.05)

−40.4

Yoko

Log N = alogD + b

−2.070 (0.072)

4.80 (0.12)

−55.7

 

Log N = aD + b

−0.022 (0.001)

2.50 (0.07)

−20.9

Yambela

Log N = alogD + b

−1.499 (0.197)

3.26 (0.28)

−12.3

 

Log N = aD + b

−0.023 (0.004)

1.80 (0.12)

−4.9

  1. N is the stem density in a diameter bin with diameter midpoint D