Table 2 Number of plots by distance from edge of severity category polygon, severity category and assessment type. Lower case “a” and “b” denote initial and extended assessments.
From: Calibration and Validation of Immediate Post-Fire Satellite-Derived Data to Three Severity Metrics
Composite burn index (CBI) categories | Canopy cover (CC) change categories | Basal area change (BA4) categories | Basal area change (BA7) categories | CBI plots (n) | CC plots (n) | BA4a plots (n) | BA4b plots (n) | BA7a plots (n) | BA7b plots (n) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
Distance from edge of severity category polygon | <30 m | 0 % | 0 % | 51 | 39 | 56 | 42 | ||||
>0 % and <10 % | 54 | 64 | |||||||||
>0 % and <25 % | ≥10 % and <25 % | 106 | 115 | 63 | 65 | ||||||
≥25 % and <50 % | 75 | 80 | |||||||||
≥25 % and <75 % | ≥50 % and <75 % | 115 | 119 | 67 | 66 | ||||||
≥75 % and <90 % | 23 | 21 | |||||||||
≥75 % | ≥90 % | 72 | 82 | 81 | 88 | ||||||
≥30 m | 0 % | 0 % | 15 | 27 | 10 | 24 | |||||
>0 % and <10 % | 22 | 12 | |||||||||
>0 % and <25 % | ≥10 % and <25 % | 40 | 31 | 7 | 5 | ||||||
≥25 % and <50 % | 10 | 5 | |||||||||
≥25 % and <75 % | ≥50 % and <75 % | 42 | 38 | 5 | 6 | ||||||
≥75 % and <90 % | 3 | 5 | |||||||||
≥75 % | ≥90 % | 193 | 183 | 158 | 151 | ||||||
All-plots distance | ≥0 and <0.1 | 0 % | 0 % | 0 % | 9 | 72 | 66 | 66 | 66 | 66 | |
>0 % and <10 % | 76 | 76 | |||||||||
≥0.1 and <1.25 | >0 % and <25 % | >0 % and <25 % | ≥10 % and <25 % | 98 | 137 | 146 | 146 | 70 | 70 | ||
≥25 % and <50 % | 85 | 85 | |||||||||
≥1.25 and <2.25 | ≥25 % and <50 % | ≥25 % and <75 % | ≥50 % and <75 % | 152 | 98 | 157 | 157 | 72 | 72 | ||
≥50 % and <75 % | ≥75 % and <90 % | 67 | 26 | 26 | |||||||
≥2.25 | ≥75 % | ≥75 % | ≥90 % | 141 | 260 | 265 | 265 | 239 | 239 | ||
Total | 400a | 634 | 634 | 634 | 634 | 634 |