Comparison of 2 models to estimate tree debris (yd3) following an ice storm collected by a community using a canopy cover estimate across the entire city (TCCCITY). The NLCD (National Land Cover Database) model variable used 30-m imagery and the NAIP (National Agriculture Imagery Program) and NAPP (National Aerial Photography Program) model variables used approximately 2-m or better imagery. SEM (standard error of the mean); TCC (tree canopy cover).
| NLCD Model Adj R2 = 0.949 | NAIP/NAPP Model Adj R2 = 0.917 | |||
|---|---|---|---|---|
| Variable | Unstandardized coefficients (SEM) | P-value | Unstandardized coefficients (SEM) | P-value |
| Constant | −129,677 (72,644) | < 0.001 | −257,643 (72,644) | = 0.001 |
| Street distance (mi) | 655.1 (31.9) | < 0.001 | 638.4 (31.9) | < 0.001 |
| Ice (in) | 49,426 (19,310) | = 0.003 | 59,307 (19,310) | = 0.004 |
| TCCCITY (%) | Not Significant | = 0.207 | 2,884 (1,603) | = 0.081 |