Table 5. Accuracy evaluation of land use classification for the study area in 2015 and 2019.
| Land-use | 2015 | ||||||
|---|---|---|---|---|---|---|---|
| Forestland | Grassland | Constructionland | Cultivatedland | Miningland | Waterarea | Total | |
| Forest land | 1,646 | 2 | – | – | – | – | 1,648 |
| Grassland | – | 150 | – | – | – | – | 150 |
| Construction land | 3 | – | 2406 | – | – | – | 2,409 |
| Cultivated land | – | 4 | 2 | 1737 | – | – | 1,743 |
| Mining land | – | – | 17 | – | 346 | – | 363 |
| Water area | – | – | – | – | – | 319 | 319 |
| Total | 1649 | 156 | 2425 | 1737 | 346 | 319 | 6,632 |
| Producers Accuracy | 99.82 | 96.15 | 99.22 | 1000 | 100 | 98.46 | – |
| Users Accuracy | 99.88 | 100 | 99.67 | 99.66 | 95.32 | 100 | – |
| 2019 | |||||||
| Forest land | 858 | 35 | – | – | – | – | 893 |
| Grassland | – | 37 | 34 | 10 | 1 | – | 82 |
| Construction land | – | – | 1710 | 35 | 18 | – | 1,763 |
| Cultivated land | 2 | 11 | 19 | 821 | 2 | – | 855 |
| Mining land | – | – | 2 | – | 263 | – | 265 |
| Water area | – | – | – | – | – | 231 | 231 |
| Total | 860 | 83 | 1765 | 866 | 284 | 231 | 4,089 |
| Producers Accuracy | 99.77 | 44.58 | 96.88 | 94.8 | 92.61 | 92.4 | – |
| Users Accuracy | 96.08 | 45.12 | 96.07 | 95.8 | 99.25 | 100 | – |
Notes.
In 2015, Overall Classification Accuracy = 99.50%; Overall Kappa Statistics = 0.9932; In 2019, Overall Classification Accuracy = 95.42%; Overall Kappa Statistics = 0.9361.