Table 5.
National and regional 2011 land cover classification accuracies for version 1 (V1) and version 2 (V2) of the NLCD 2011 land cover product. Cell entries are user’s accuracy (UA) and producer’s accuracy (PA) and their associated (standard errors) expressed as percent of area. Agreement is defined as a match between the map label and either the primary or alternate reference label (see Wickham et al., 2017). The column Δ is V2 – V1 with statistically significant changes shown in bold type. Overall accuracy (OA) is reported at the bottom of the UA panel.
| UA | National | East | West | ||||||
|---|---|---|---|---|---|---|---|---|---|
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| Class | V1 | V2 | Δ | V1 | V2 | Δ | V1 | V2 | Δ |
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| 11 | 92 (2) | 95 (2) | 2 | 89 (3) | 94 (3) | 5 | 86 (2) | 95 (2) | 9 |
| 12 | 36 (10) | 88 (12) | 52 | − | − | − | 36 (10) | 88 (12) | 52 |
| 21 | 57 (3) | 57 (4) | 0 | 55 (4) | 60 (5) | 5 | 61 (4) | 52 (6) | −9 |
| 22 | 69 (3) | 75 (3) | 6 | 70 (4) | 75 (4) | 5 | 67 (4) | 73 (6) | 6 |
| 23 | 79 (3) | 76 (4) | −3 | 76 (4) | 75 (4) | −1 | 84 (3) | 77 (7) | −7 |
| 24 | 83 (3) | 84 (3) | 1 | 81 (4) | 82 (4) | 1 | 87 (4) | 87 (4) | 0 |
| 31 | 60 (4) | 59 (6) | −1 | 43 (7) | 29 (9) | −14 | 62 (4) | 63 (7) | 1 |
| 41 | 84 (4) | 89 (1) | 5 | 87 (2) | 92 (1) | 5 | 68 (4) | 70 (5) | 2 |
| 42 | 88 (4) | 89 (1) | 1 | *4 (2) | 85 (2) | 1 | 89 (1) | 90 (2) | 1 |
| 43 | 59 (3) | 57 (3) | −2 | 64 (2) | 60 (3) | −4 | 33 (6) | 31 (6) | −2 |
| 52 | 88 (1) | 86 (1) | −2 | 28 (3) | 43 (5) | 15 | 93 (1) | 88 (1) | −5 |
| 71 | 81 (1) | 82 (2) | 1 | 39 (3) | 49 (5) | 10 | 85 (2) | 84 (2) | −1 |
| 81 | 72 (2) | 75 (2) | 3 | 75 (3) | 75 (2) | 0 | 65 (4) | 72 (5) | 7 |
| 82 | 88 (1) | 93 (1) | 5 | 86 (2) | 92 (1) | 6 | 89 (2) | 94 (1) | 5 |
| 90 | 70 (3) | 69 (3) | −1 | 74 (3) | 74 (3) | 0 | 37 (5) | 40 (9) | 3 |
| 95 | 60 (4) | 57 (4) | −3 | 61 (5) | 56 (6) | −5 | 58 (5) | 58 (5) | 0 |
| OA | 82 (0.5) | 83 (1) | 1 | 76 (0.8) | 79 (0.8) | 3 | 86 (0.7) | 85 (0.7) | −1 |
| PA | |||||||||
| Class | V1 | V2 | Δ | V1 | V2 | Δ | V1 | V2 | Δ |
| 11 | 84 (3) | 86 (3) | 2 | 87 (4) | 90 (4) | 3 | 81 (6) | 81 (6) | 0 |
| 12 | 100 (0) | 100 (0) | 0 | − | − | − | 100 (0) | 100 (0) | 0 |
| 21 | 30 (3) | 57 (3) | 27 | 54 (1) | 52 (4) | −2 | 71 (5) | 67 (6) | −4 |
| 22 | 56 (4) | 59 (4) | 3 | 59 (1) | 56 (4) | −3 | 50 (5) | 65 (7) | 15 |
| 23 | 65 (5) | 64 (5) | −1 | 61 (6) | 59 (6) | −2 | 73 (6) | 72 (9) | −1 |
| 24 | 52 (5) | 71 (7) | −1 | 75 (7) | 74 (7) | −1 | 67 (10) | 67 (14) | 0 |
| 31 | 81 (6) | 64 (7) | −17 | 60 (14) | 42 (12) | −18 | 83 (8) | 67 (8) | −16 |
| 41 | 81 (1) | 78 (2) | −3 | 82 (1) | 79 (2) | −3 | 70 (5) | 73 (5) | 3 |
| 42 | 79 (1) | 81 (1) | 2 | 62 (2) | 68 (2) | 6 | 89 (2) | 89 (2) | 0 |
| 43 | 65 (4) | 80 (3) | 15 | 65 (4) | 80 (3) | 15 | 63 (8) | 79 (10) | 16 |
| 52 | 89 91) | 87 (1) | −2 | 48 (5) | 42 (5) | −6 | 90 (1) | 89 (1) | −1 |
| 71 | 87 (1) | 85 (2) | 2 | 65 (6) | 70 (6) | 5 | 88 (2) | 86 (2) | −2 |
| 81 | 68 (2) | 73 (2) | 5 | 79 (3) | 88 (2) | 9 | 48 (3) | 42 (4) | −6 |
| 82 | 88 (1) | 94 (1) | 6 | 86 (2) | 93 (1) | 7 | 90 (2) | 94 (1) | 4 |
| 90 | 86 (2) | 90 92) | 4 | 87 (3) | 92 (2) | 5 | 72 (8) | 78 (8) | −2 |
| 95 | 71 (4) | 80 (4) | 9 | 76 (6) | 82 (5) | 6 | 63 (7) | 76 (7) | 13 |