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New Zealand Journal of Forestry Science

Table 3 Statistics and coefficients of models fitted to mean top height ( H m ), volume ( V ) and mean diameter ( D ) for the highest pulse density (10 pulses m −2 )

From: The influence of LiDAR pulse density on the precision of inventory metrics in young unthinned Douglas-fir stands during initial and subsequent LiDAR acquisitions

Variables in model

Parameter values

Model statistics

y

x

α

β

λ

R 2

RMSE

H m

H 70

2.749

1.144

−

0.85

1.01 m

V

H 10

24.41

16.20

1.561

0.83

21.3 m3 ha−1

D

H 95

11.91

23.88

−0.721

0.73

18.0 mm

  1. Shown are the parameters (α, β and λ) for a model with the form y = α + βx + λx2. Also shown are the coefficient of determination (R2) and root mean square error (RMSE) of each model.
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