Corrine grassland are identified by isolating class 231 (pastures) and excluding all other classes including class 321 (natural grasslands).
CORINE classes are converted to a broad set of general classes using the following look up table:
| DN | From to just-less-than | Category |
| 1 | 111 – 143 | Artificial cover |
| 2 | 211 – 214 | Arable cover |
| 3 | 231 – 232 | Pastures |
| 4 | 311 – 314 | Woodlands |
| 4 | 324 – 325 | Woodland |
| 6 | 244 – 245 | Agroforestry |
| 7 | 321 – 322 | Natural grasslands |
| 8 | 322 – 323 | Moors and heathland |
| 9 | 331 – 336 | Bare areas |
| 10 | 323 – 324 | Sclerophyllous vegetation |
| 11 | 411 – 413 | Inland marsh & peat bogs |
| 12 | 421 – 424 | Marine marshes and flats |
| 13 | 511 – 522 | Water bodies & courses |
| 14 | 522 – 524 | Estuaries & Sea / Ocean |
CORINE Broad Clases
According to CORINE data Welsh land cover is dominated by grasslands.
| Category | Hectares |
|---|---|
| Artificial cover | 124,189 |
| Arable cover | 134,688 |
| Pastures | 1,084,175 |
| Woodlands | 233,647 |
| Natural grasslands | 244,728 |
| Moors & heathland | 171,515 |
| Bare areas | 12,794 |
| Inland marsh & peat bogs | 60,110 |
| Marine marshes & flats | 30,707 |
| Water bodies & courses | 7,053 |
| Estuaries, Sea & Ocean | 18,826 |