Figure 2From: Use of LiDAR to estimate stand characteristics for thinning operations in young Douglas-fir plantationsBivariate relationships between LiDAR metrics and (a) mean top height, (b) green crown height, (c) total stem volume, (d) mean diameter at breast height, (e) basal area and (f) stand density. In all figures linear lines of the form y = a + bx have been fitted. For these equations values of a, b, followed by R2 and RMSE are (a) 2.381, 1.151; R2 = 0.85, RMSE = 1.02 m, (b) 0.3602, 0.5699; R2 = 0.71, RMSE = 0.497 m, (c) 2.501, 28.56; R2 = 0.83, RMSE = 22.1 m3 ha-1, (d) 46.74, 13.24; R2 = 0.74, RMSE = 18.9 mm, (e) 7.061, 4.632; R2 = 0.72, RMSE = 4.87 m2 ha-1, (f) 2172, -413.8; R2 = 0.33, RMSE = 430 stems ha-1.Back to article page