Table 4 Statistics and population of NUTS-3Â units used by study periods, The transition from 89 to 86 department administrative units (NUTS-3) is due to the annexation of the Alsace-Moselle region. Gironde was excluded from the whole paired t tests but it was kept in all other calculations (Annex 4)
Periods | Statistics used | Number of NUTS-3 used in analyzes | ||||||
|---|---|---|---|---|---|---|---|---|
Decennial agricultural statistics (1892) | Daubrée statistics (1908) | Decennial agricultural statistics (1929) | NFI (20081) | Whole French forest | Ownership category | Forest management type | Tree species | |
1892–1908 | X | X |  |  | 86 | 86 | 86 |  |
1908–1929 |  | X | X |  | 89 | 89 | 86 |  |
1892–1929 | X |  | X |  | 86 | 86 | 86 |  |
1908–2008 |  | X |  | X | 89 | 89 | 86 | 86 |