Table 2 Descriptive statistics of validation dataset. Pp_p: Pinus pinea L. individual trees in pure stand plots, Pt_p: Pinus pinaster Ait. individual trees in pure stand plots, Pp_m: Pinus pinea L. individual trees in mixed stand plots, Pt_m: Pinus pinaster Ait. individual trees in mixed stand plots
Minimum | Maximum | Mean | Standard deviation | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pp_p | Pt_p | Pp_m | Pt_m | Pp_p | Pt_p | Pp_m | Pt_m | Pp_p | Pt_p | Pp_m | Pt_m | Pp_p | Pt_p | Pp_m | Pt_m | |
Field data | ||||||||||||||||
DBH (cm) | 34.6 | 27.2 | 26.9 | 22.5 | 71.0 | 58.6 | 57.2 | 52.6 | 44.6 | 41.0 | 40.0 | 32.7 | 7.1 | 6.9 | 7.5 | 6.2 |
Height (m) | 12.4 | 11.5 | 9.6 | 11.0 | 19.9 | 21.6 | 16.7 | 16.9 | 15.0 | 16.2 | 12.6 | 13.7 | 1.7 | 2.8 | 1.6 | 1.6 |
Live_Branch (m) | 3.8 | 2.6 | 2.4 | 2.7 | 9.8 | 14.2 | 9.1 | 11.3 | 6.4 | 8.6 | 5.4 | 7.9 | 1.7 | 3.6 | 1.5 | 1.9 |
Crown_Radius (m) | 2.6 | 1.8 | 2.1 | 1.4 | 6.0 | 3.7 | 5.9 | 3.7 | 3.9 | 2.7 | 3.8 | 2.5 | 0.7 | 0.5 | 0.8 | 0.6 |
LiDAR data | ||||||||||||||||
Max_Height (m) | 11.1 | 7.7 | 6.8 | 10.0 | 18.4 | 18.0 | 16.0 | 15.6 | 14.0 | 13.7 | 12.0 | 12.7 | 1.7 | 2.8 | 1.6 | 1.3 |
Min_Height (m) | 2.1 | 2.2 | 3.1 | 4.2 | 13.3 | 13.8 | 12.2 | 10.8 | 8.4 | 7.8 | 7.4 | 7.4 | 2.6 | 2.5 | 1.7 | 1.7 |
Crown_Area (m2) | 23.5 | 12.5 | 19.5 | 19.5 | 87.7 | 75.9 | 105.2 | 107.0 | 42.7 | 26.0 | 38.6 | 36.2 | 16.9 | 14.9 | 18.5 | 17.7 |
Crown_Height (m) | 2.3 | 1.2 | 0.5 | 1.6 | 11.9 | 14.9 | 11.2 | 10.3 | 5.5 | 5.9 | 4.6 | 5.3 | 2.1 | 3.1 | 1.7 | 1.8 |
Density (trees/ha) | 41.0 | 60.0 | 48.0 | 68.0 | 227.0 | 179.0 | 206.0 | 197.0 | 106.6 | 113.8 | 108.5 | 122.7 | 44.6 | 28.9 | 36.4 | 42.0 |
HR | 0.2 | 0.1 | 0.08 | 0.15 | 0.8 | 0.9 | 0.78 | 0.70 | 0.4 | 0.4 | 0.38 | 0.41 | 0.2 | 0.2 | 0.13 | 0.13 |
AHR | 1.7 | 0.9 | 1.53 | 1.53 | 6.1 | 5.8 | 9.01 | 9.62 | 3.0 | 1.9 | 3.23 | 2.87 | 1.0 | 1.0 | 1.53 | 1.51 |
CHR | − 5.1 | − 4.8 | 0.22 | 0.30 | − 0.7 | 0.1 | 0.92 | 0.85 | − 2.0 | − 0.9 | 0.62 | 0.59 | 1.0 | 1.0 | 0.13 | 0.13 |
Satellite data | ||||||||||||||||
Blue | 65.6 | 54.5 | 90.6 | 92.0 | 87.9 | 99.4 | 120.5 | 113.6 | 74.7 | 72.3 | 102.2 | 103.0 | 5.1 | 11.6 | 18.7 | 6.7 |
Green | 86.3 | 74.4 | 113.5 | 117.0 | 107.3 | 115.2 | 133.5 | 131.5 | 96.8 | 93.4 | 123.7 | 124.8 | 4.7 | 10.5 | 17.4 | 4.1 |
Red | 102.1 | 96.7 | 132.1 | 132.4 | 121.5 | 135.5 | 148.4 | 147.1 | 111.2 | 109.7 | 139.8 | 140.3 | 4.0 | 9.8 | 17.0 | 3.8 |
Infrared | 199.3 | 136.9 | 201.1 | 228.9 | 270.4 | 269.9 | 287.5 | 282.7 | 238.1 | 208.1 | 253.0 | 252.5 | 17.2 | 34.7 | 29.6 | 15.7 |
NDVI | 0.27 | 0.17 | 0.20 | 0.22 | 0.43 | 0.38 | 0.36 | 0.34 | 0.36 | 0.30 | 0.29 | 0.28 | 0.03 | 0.05 | 0.04 | 0.03 |
EVI | 0.45 | 0.27 | 0.32 | 0.36 | 0.76 | 0.65 | 0.61 | 0.59 | 0.63 | 0.51 | 0.48 | 0.47 | 0.06 | 0.09 | 0.08 | 0.06 |