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Figure 10.
Figure 11.
General characteristics of forest area by forms of forest ownership in 2019
| Specification | Grand total | Of which wooded area in % of grand total area | ||||||
|---|---|---|---|---|---|---|---|---|
| Total | Tree stands by age classes | Restocking class and of a selection structure | ||||||
| I (1—20 years) | II (21—40 years) | III (41—60 years) | IV (61—80 years) | V (81years<) | ||||
| [ha] | [%] | |||||||
| Total (of which): | 9242.4 | 96.9 | 11.9 | 14.8 | 23.8 | 20.0 | 23.1 | 3.3 |
| 1. Public forests (of which) | 7460.1 | 97.3 | 12.2 | 14.0 | 22.2 | 19.4 | 25.9 | 3.6 |
| i) owned by the State Treasury | 7375.9 | 97.3 | 12.2 | 14.0 | 22.2 | 19.4 | 25.9 | 3.6 |
| ii) managed by the State Forests | 7110.0 | 97.4 | 12.5 | 14.2 | 22.2 | 19.4 | 25.5 | 3.6 |
| iii) national parks | 185.6 | 94.9 | 3.0 | 8.2 | 19.6 | 17.7 | 40.2 | 6.2 |
| iv) stock of Treasury Agricultural Property | 27.6 | 89.1 | 3.7 | 14.5 | 24.5 | 28.7 | 17.7 | - |
| v) municipally owned | 84.2 | 96.5 | 6.5 | 10.7 | 21.2 | 20.9 | 31.9 | 5.3 |
| 2. private forests | 1782.3 | 95.1 | 10.7 | 18.2 | 31.3 | 22.3 | 10.9 | 1.7 |
UA of HRL FTY based on the Polish NFI sample plots (UA = user’s accuracy, 0 = non-forest, 1 = broadleaf dominated forest and 2 = coniferous dominated forest)
| UA | HRL FTY code | Country level | Natura 2000 | Nature reserves | National parks |
| (%) | |||||
| non-tree covered areas (0) | 31.85 | 37.38 | 28.57 | 30.43 | |
| broad-leaved (1) | 70.14 | 71.32 | 77.01 | 67.63 | |
| coniferous (2) | 73.73 | 73.28 | 65.35 | 71.15 | |
HRL FTY EO based on the Polish NFI sample plots (EC = error of commission, 0 = non-forest, 1 = broadleaf dominated forest and 2 = coniferous dominated forest)
| EC | HRL FTY code | Total | Natura 2000 | Nature reserves | National parks |
| (%) | |||||
| non-tree covered areas (0) | 68.15 | 62.62 | 71.43 | 69.57 | |
| broad-leaved (1) | 29.86 | 28.68 | 22.99 | 32.37 | |
| coniferous (2) | 26.27 | 26.72 | 34.65 | 28.85 | |
General confusion matrix of HRL FTY with the NFI plots (0 = non-tree covered areas, 1 = broadleaf dominated forest, 2 = coniferous dominated forest)
| Confusion matrix between HRL FTY and NFI | HRL FTY | ||||
|---|---|---|---|---|---|
| non-tree covered areas (0) | broad-leaved (1) | coniferous (2) | Total | ||
| NFI | non-tree covered areas (0) | 1144 | 2006 | 3287 | 6437 |
| broad-leaved (1) | 1178 | 11054 | 3707 | 15939 | |
| coniferous (2) | 1270 | 2701 | 19626 | 23597 | |
| Total | 3592 | 15761 | 26620 | 45973 | |
Confusion matrix of HRL FTY with the NFI plots—national parks only (0 = non-tree covered areas, 1 = broadleaf dominated forest and 2 = coniferous dominated forest)
| Confusion matrix between HRL FTY and NFI | HRL FTY | ||||
|---|---|---|---|---|---|
| non-tree covered areas (0) | broad-leaved (1) | coniferous (2) | Total | ||
| NFI | non-tree covered areas (0) | 21 | 43 | 60 | 124 |
| broad-leaved (1) | 26 | 234 | 75 | 335 | |
| coniferous (2) | 22 | 69 | 333 | 424 | |
| Total | 69 | 346 | 468 | 883 | |
Producer’s accuracy (PA) of HRL FTY based on the Polish NFI sample plots (PA = producer’s accuracy, 0 = non-forest, 1 = broadleaf dominated forest and 2 = coniferous dominated forest)
| PA | HRL FTY code | Country level | Natura 2000 | Nature reserves | National parks |
| (%) | |||||
| non-tree covered areas (0) | 17.77 | 16.25 | 7.27 | 16.94 | |
| broad-leaved (1) | 69.35 | 71.76 | 76.72 | 69.85 | |
| coniferous (2) | 83.17 | 84.12 | 80.11 | 78.54 | |
General characteristic of forest area by forms of forest ownership in 2022
| Specification | Grand total | Of which wooded area in % of grand total area | ||||||
|---|---|---|---|---|---|---|---|---|
| Total | Tree stands by age classes | Restocking class and of a selection structure | ||||||
| I (1—20 years) | II (21—40 years) | III (41—60 years) | IV (61—80 years) | V (81years<) | ||||
| [ha] | [%] | |||||||
| Total (of which): | 9260.3 | 97.2 | 11.5 | 14.2 | 21.5 | 21.6 | 24.4 | 4.0 |
| 1. Public forests (of which) | 7474.6 | 97.5 | 12.0 | 13.6 | 19.9 | 20.5 | 26.9 | 4.6 |
| i) owned by the State Treasury | 7390.6 | 97.5 | 12.1 | 13.6 | 20.0 | 20.3 | 26.9 | 4.6 |
| ii) managed by the State Forests | 7121.4 | 97.6 | 12.4 | 13.8 | 20.1 | 20.5 | 26.3 | 4.5 |
| iii) national parks | 183.5 | 95.0 | 1.9 | 7.3 | 15.2 | 16.0 | 45.9 | 8.7 |
| iv) stock of Treasury Agricultural Property | 27.6 | 91.5 | 4.1 | 11.6 | 23.7 | 29.5 | 22.6 | - |
| v) municipally owned | 84.0 | 97.6 | 4.1 | 9.7 | 18.0 | 25.1 | 34.5 | 6.2 |
| 2. private forests | 1785.7 | 95.8 | 9.4 | 16.5 | 28.1 | 26.4 | 13.6 | 1.8 |
Confusion matrix of HRL FTY with the NFI plots – Natura 2000 areas only (0 = non-tree covered areas, 1 = broadleaf dominated forest, 2 = coniferous dominated forest)
| Confusion matrix between HRL FTY and NFI | HRL FTY | ||||
|---|---|---|---|---|---|
| non-tree covered areas (0) | broad-leaved (1) | coniferous (2) | Total | ||
| NFI | non-tree covered areas (0) | 117 | 245 | 358 | 720 |
| broad-leaved (1) | 88 | 1395 | 461 | 1944 | |
| coniferous (2) | 108 | 316 | 2246 | 2670 | |
| Total | 313 | 1956 | 3065 | 5334 | |
Confusion matrix of HRL FTY with the NFI plots—nature reserves only (0 = non-tree covered areas, 1 = broadleaf dominated forest and 2 = coniferous dominated forest)
| Confusion matrix between HRL FTY and NFI | HRL FTY | ||||
|---|---|---|---|---|---|
| non-tree covered areas (0) | broad-leaved (1) | coniferous (2) | Total | ||
| NFI | non-tree covered areas (0) | 4 | 27 | 24 | 55 |
| broad-leaved (1) | 6 | 201 | 55 | 262 | |
| coniferous (2) | 4 | 33 | 149 | 186 | |
| Total | 14 | 261 | 228 | 503 | |
OA of HRL FTY based on assessment of NFI plots and by age classes (n = number of sample plots, OA = overall accuracy, 0 = non-forest, 1 = broadleaf dominated forest and 2 = coniferous dominated forest)
| OA | Age class | Country level | Natura 2000 | Nature reserves | National parks |
| (n) number of plots | |||||
| Regeneration phase | 6263 | 809 | 62 | 137 | |
| 1–10 | 2883 | 279 | 6 | 44 | |
| 11–20 | 3970 | 308 | 19 | 68 | |
| 21–30 | 3615 | 323 | 25 | 62 | |
| 31–40 | 3359 | 364 | 25 | 55 | |
| 41–50 | 3647 | 408 | 34 | 72 | |
| 51–60 | 5160 | 576 | 47 | 99 | |
| 61–70 | 4561 | 457 | 30 | 92 | |
| 71–80 | 2954 | 337 | 34 | 54 | |
| 81–90 | 3075 | 381 | 33 | 66 | |
| 91–100 | 2148 | 302 | 41 | 30 | |
| 101–110 | 1477 | 248 | 36 | 43 | |
| 111–120 | 980 | 193 | 32 | 18 | |
| 121–130 | 1315 | 349 | 79 | 43 | |
| >130 | 565 | NA | NA | NA | |
| Total | 45973 | 5334 | 503 | 883 | |
| [%] | |||||
| Regeneration phase | 17.69 | 16.31 | 7.27 | 15.57 | |
| 1–10 | 48.70 | 45.16 | 50.00 | 43.18 | |
| 11–20 | 69.60 | 74.68 | 89.47 | 58.82 | |
| 21–30 | 75.30 | 77.40 | 72.00 | 75.81 | |
| 31–40 | 79.19 | 83.24 | 84.00 | 74.55 | |
| 41–50 | 81.71 | 80.64 | 85.29 | 83.33 | |
| 51–60 | 81.47 | 79.86 | 61.70 | 77.78 | |
| 61–70 | 82.92 | 80.74 | 70.00 | 80.43 | |
| 71–80 | 84.09 | 85.16 | 79.41 | 85.19 | |
| 81–90 | 84.98 | 88.71 | 75.76 | 84.85 | |
| 91–100 | 82.27 | 81.79 | 41.67 | 73.33 | |
| 101–110 | 78.74 | 79.03 | 75.00 | 72.09 | |
| 111–120 | 79.49 | 82.90 | 84.38 | 77.78 | |
| 121–130 | 59.47 | 56.73 | 28.57 | 60.00 | |
| >130 | 59.47 | 56.73 | 28.57 | 60.00 | |
| Overall accuracy | 69.22 | 70.45 | 70.38 | 66.59 | |
HRL FTY EO based on the Polish NFI sample plots (EO = error of omission, 0 = non-forest, 1 = broadleaf dominated forest and 2 = coniferous dominated forest)
| EO | HRL FTY code | Country level | Natura 2000 | Nature reserves | National parks |
| (%) | |||||
| non-tree covered areas (0) | 82.23 | 83.75 | 92.73 | 83.06 | |
| broad-leaved (1) | 30.65 | 28.24 | 23.28 | 30.15 | |
| coniferous (2) | 16.83 | 15.88 | 19.89 | 21.46 | |