Current state and productivity of age-old experimental plantations of prof. V.D. Ogievsky in the northeastern part of Ukraine
und | 19. Sept. 2021
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Article Category: Original Article
Online veröffentlicht: 19. Sept. 2021
Seitenbereich: 195 - 202
Eingereicht: 15. Dez. 2020
Akzeptiert: 19. Mai 2021
DOI: https://doi.org/10.2478/ffp-2021-0020
© 2021 M. Zhezhkun, L.V. Demianenko, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Figure 1
Forestry and assessment parameters of Scots pine stands of different species composition and origin
| Parameters | PSP 1-Sb | PSP 2-Sb | PSP 3-Sb |
|---|---|---|---|
| Origin | Natural | Planted | Planted |
| Forest species composition | First layer 100% Scots pine, single English oak | First layer 100% Scots pine + single silver birch Second layer 100% small leaved lime | First layer 100% Scots pine, single English oak, small leaved lime, wild pear, wild apple |
| Age, years | 112 | 103 | 103 |
| Average height, m | 27.8 | 32.0 | 31.5 |
| Average diameter, cm | 35.0 | 41.5 | 38.2 |
| Absolute density of stocking, m2.ha-1 | 37.2 | First layer 46.1, Second layer 16.5 | 48.2 |
| Relative density of stocking | 0.72 | First layer 0.92, Second layer 0.48 | 1.01 |
| Tree density: total/pine, trees ha-1 | 390/386 | 1324/335 | 611/410 |
| Wood stock: total/pine, m3.ha-1 | 482/481 | 784/503 | 660/553 |
| Mortality: total/pine, m3.ha-1 | 15/15 | 78/78 | 44/44 |
| Dead wood: total/pine, m3.ha-1 | – | 28/28 | 16/16 |
| Survival of stands, % | – | 3.4 | 4.1 |
| Site index class | 1 | 1а | 1а |
| Forest type | B2dC | B2dC | B2dC |
Distribution of Scots pine trees by categories of health condition
| PSP | Proportion of Scots pine trees by categories of health condition [%] | HCI | ||||||
|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | total | ||
| 1-Sb | 44.0 | 40.9 | 5.8 | – | – | 9.3 | 100 | 1.99 |
| 2-Sb | 41.2 | 36.3 | 4.7 | – | – | 17.9 | 100 | 2.35 |
| 3-Sb | 29.3 | 43.1 | 17.3 | – | 4.4 | 5.9 | 100 | 2.25 |
| 6-Sb | 37.3 | 30.0 | 10.9 | 1.8 | – | 20.0 | 100 | 2.57 |
| 7-Sb | 23.6 | 43.6 | 28.6 | 1.4 | 3 | 1.5 | 100 | 2.22 |
| 8-Sb | 34.8 | 31.4 | 23.7 | 4.2 | 1.7 | 4.2 | 100 | 1.79 |
| 9-Sb | 1.0 | 33.0 | 53.4 | 4.9 | 1.0 | 6.7 | 100 | 2.92 |
| 10-Sb (sowing) | 28.6 | 54.0 | 12.3 | 2.0 | – | 6.1 | 100 | 2.12 |
| 10-Sb (planting) | 31.5 | 44.5 | 10.9 | – | 2.2 | 10.5 | 100 | 2.29 |
| 11-Sb | 24.3 | 64.8 | 12.2 | – | – | 8.7 | 100 | 2.23 |
| 12-Sb | 30.2 | 40.3 | 12.2 | 0.7 | 2.2 | 14.4 | 100 | 2.50 |
Forestry and assessment parameters of Scots pine stands in the permanent sample plots
| Parameters | PSP 6-Sb | PSP 7-Sb | PSP 8-Sb | PSP 9-Sb |
|---|---|---|---|---|
| Stand composition | ||||
| First layer 100% Scots pine + English oak, single silver birch | First layer 100% Scots pine Second layer 70% English oak, 20% Norway maple, 10% silver birch | First layer 100% Scots pine Second layer 80% silver birch, 20% English oak | First layer 100% Scots pine, single silver birch, English oak | |
| Age, years | 105 | 105 | 105 | 105 |
| Average height, m | 31.5 | 30.7 | 30.6 | 30.3 |
| Average diameter, cm | 38.0 | 35.3 | 33.4 | 33.5 |
| Absolute density of stocking, m2.ha-1 | 50.5 | Second First layer layer 41.8 4.1 | І 49.0 ІІ 3.1 | 42.3 |
| Relative density of stocking | 1.06 | Second First layer layer 0.82 0.24 | Second First layer layer 0.97 0.21 | 0.87 |
| Tree density: total/pine, trees ha-1 | 577/419 | 1021/425 | 1090/555 | 530/475 |
| Wood stock: total/pine, m3.ha-1 | 687/659 | 655/623 | 682/659 | 571/568 |
| Mortality: total/pine, m3.ha-1 | 44/40 | 11/10 | 21/21 | 31/31 |
| Dead wood: total/pine, m3.ha-1 | 10/10 | 8/8 | 12/9 | 49/49 |
| Survival of stands, % | 4.2 | 4.3 | 5.6 | 5.3 |
| Site index class | 1 | 1 | 1 | 1 |
| Forest type | B2dC | B2dC | B2dC | B2dC |
Forestry and assessment parameters of Scots pine stands created by sowing and planting
| Parameters | PSP 10-Sb | PSP 11-Sb | PSP 12-Sb | ||
|---|---|---|---|---|---|
| sown | planted | together | |||
| Stand composition | 100% Scots pine | 100% Scots pine, single English oak | 100% Scots pine, single English oak | 100% Scots pine, single English oak | 100% Scots pine, single English oak |
| Age, years | 105 | 105 | 105 | 105 | 104 |
| Average height, m | 28.0 | 28.0 | 28.0 | 30.0 | 30.9 |
| Average diameter, cm | 33.9 | 34.0 | 34.0 | 37.0 | 39.2 |
| Absolute density of stocking, m2.ha-1 | 16.5 | 28.8 | 45.3 | 45.3 | 43.3 |
| Relative density of stocking | 0.34 | 0.59 | 0.93 | 0.91 | 0.89 |
| Tree density: total/pine, trees ha-1 | 182/182 | 328/316 | 510/498 | 434/418 | 394/346 |
| Wood stock: total/pine, m3.ha-1 | 207/207 | 362/362 | 569/569 | 604/603 | 580/568 |
| Mortality: total/pine, m3.ha-1 | 14/14 | 27/25 | 41/39 | 51/45 | 41/35 |
| Dead wood: total/pine, m3.ha-1 | 3/3 | 21/21 | 24/24 | 3/3 | 25/25 |
| Survival of stands, % | 1.3 | 2.3 | 3.6 | 3.1 | 2.6 |
| Site index class | І | І | І | І | І |
| Forest type | B2dC | B2dC | B2dC | B2dC | B2dC |