Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Basic input parameters and definitions for the Kljun et al_ (2004) FFP model_
| Input | Description |
|---|---|
| zm | measurement height above ground (m) |
| z0 | roughness length (m) |
| d | displacement height (m) |
| u_mean | mean wind speed at zm (m/s) |
| L | Obukhov length (m) |
| sigma_v | standard deviation of lateral velocity fluctuations after rotation (m/s) |
| u* | friction velocity (m/s) |
Land categories of the FFP area over the period of 2015–2020 at a height of 30 m_
| Land type | Species | Area (ha) | Increment (m3/ha/y) | Growing stock (m3) | % of the FFP |
|---|---|---|---|---|---|
| Forest land | Alnus incana | 0.1 | 0.5 | 7.6 | 0.2 |
| Forest land | Alnus glutinosa | 0.2 | 0.8 | 22.7 | 0.4 |
| Forest land | Populus tremula | 4.3 | 8.9 | 368.6 | 6.9 |
| Forest land | Betula spp. | 6.8 | 34.1 | 1179.5 | 11.1 |
| Forest land | Picea abies | 15.4 | 99.6 | 4234.5 | 25.0 |
| Forest land | Pinus sylvestris | 28.2 | 100.2 | 8448.0 | 45.8 |
| Forest land | Unknown | 2.8 | |||
| Isle in the forest | - | 0.4 | 0.6 | ||
| Buildings | - | 0.0 | 0.0 | ||
| Electric power lines | - | 1.4 | 2.4 | ||
| Roads | - | 0.2 | 0.4 | ||
| Ditches | - | 0.6 | 1.0 | ||
| Clear area | Clear-cut | 1.0 | 1.6 | ||
| Total | - | 61.5 | 100.0 | ||
| Total forest area | - | 55.0 | 89.4 | ||
Forest site types in the FFP measured at a height of 30 m_
| Forest site type | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | Average area (ha) | % of FFP area | Average increment (m3/ha/a) | % of FFP area | Average stock (m3) | % of FFP area |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mineral dump | 3.5 | 3.9 | 3.6 | 3.9 | 3.8 | 3.5 | 3.7 | 6.0 | ||||
| Filipendula | 8.4 | 8.6 | 9.1 | 8.8 | 9.0 | 8.8 | 8.8 | 14.3 | 35.9 | 14.7 | 1560.1 | 10.9 |
| Oxalis | 1.9 | 2.0 | 1.8 | 1.7 | 1.9 | 1.6 | 1.8 | 2.9 | 4.6 | 1.9 | 282.4 | 2.0 |
| Oxalis-Myrtillus | 1.5 | 3.2 | 2.6 | 2.8 | 1.9 | 2.1 | 2.3 | 3.8 | 16.0 | 6.5 | 660.0 | 4.6 |
| Oxalis drained swamp | 3.9 | 6.4 | 4.0 | 5.4 | 4.5 | 3.9 | 4.7 | 7.6 | 26.2 | 10.7 | 925.9 | 6.5 |
| Myrtillus | 22.8 | 22.9 | 22.0 | 22.3 | 22.8 | 21.2 | 22.3 | 36.3 | 99.8 | 40.9 | 6622.5 | 46.4 |
| Uliginosum | 14.2 | 13.1 | 11.7 | 12.7 | 12.4 | 12.2 | 12.7 | 20.7 | 45.9 | 18.8 | 2916.4 | 20.5 |
| Oxycoccus | 5.4 | 5.4 | 5.3 | 4.8 | 5.1 | 5.0 | 5.2 | 8.4 | 15.6 | 6.4 | 1293.5 | 9.1 |
| Total | 61.6 | 65.4 | 60.2 | 62.3 | 61.4 | 58.3 | 61.5 | 100.0 | 244.0 | 100.0 | 14260.9 | 100.0 |
Growing stock (m3/ha) and increment (m3/ha/y) changes during the six-year period_
| Characteristic | Unit | Year | |||||
|---|---|---|---|---|---|---|---|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | ||
| Area | ha | 2888.86 | 2891.82 | 2864.11 | 2938.29 | 2914.90 | 2886.02 |
| Stock in summer | m3 | 605713 | 603467 | 592571 | 618805 | 607847 | 610235 |
| Thinning & harvesting | m3 | 8481 | 10666 | 5577 | 9394 | 5943 | |
| Increment | m3 | 9187 | 9335 | 9134 | 9500 | 9551 | 9701 |
| Stock in next summer | m3 | 606418 | 602136 | 596127 | 618910 | 611455 | |
| Stock in summer | m3/ha | 209.67 | 208.68 | 206.90 | 210.60 | 208.53 | 211.44 |
| Thinning & harvesting | m3/ha | 2.94 | 3.69 | 1.95 | 3.20 | 2.04 | |
| Increment | m3/ha | 3.18 | 3.23 | 3.19 | 3.23 | 3.28 | 3.36 |
| Stock in next summer | m3/ha | 209.92 | 208.22 | 208.14 | 210.64 | 209.77 | |
Forest site types in the FFP measured at a height of 70 m_
| Forest site type | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | Average area (ha) | % of FFP | Average increment (m3/ha/a) | % of FFP | Average stock (m3) | % of FFP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mineral dump | 418.0 | 445.5 | 397.4 | 415.5 | 429.0 | 406.6 | 418.7 | 12.703 | ||||
| Myrtillus | 564.2 | 567.9 | 553.1 | 578.1 | 576.1 | 554.3 | 565.6 | 17.161 | 848.4 | 18.0 | 77460.9 | 25.4 |
| Vaccinium | 36.4 | 34.1 | 36.6 | 36.5 | 39.3 | 36.8 | 36.6 | 1.111 | 39.6 | 0.8 | 6332.8 | 2.1 |
| Raised bog | 42.9 | 45.7 | 36.2 | 25.3 | 52.6 | 18.0 | 36.8 | 1.116 | 19.5 | 0.4 | 414.8 | 0.1 |
| Uliginosum | 73.2 | 75.7 | 73.3 | 74.5 | 75.4 | 73.6 | 74.3 | 2.253 | 71.9 | 1.5 | 9110.2 | 3.0 |
| Transitional bog | 87.0 | 95.0 | 85.0 | 93.0 | 89.8 | 85.3 | 89.2 | 2.706 | 63.0 | 1.3 | 10211.7 | 3.3 |
| Filipendula | 1233.1 | 1254.7 | 1205.3 | 1296.9 | 1236.7 | 1231.0 | 1242.9 | 37.711 | 2024.0 | 42.9 | 122544.0 | 40.1 |
| Oxalis | 160.4 | 133.1 | 129.4 | 109.5 | 129.1 | 134.1 | 132.6 | 4.024 | 364.6 | 7.7 | 12762.4 | 4.2 |
| Oxalis-Myrtillus | 172.0 | 207.5 | 198.4 | 206.6 | 180.1 | 222.9 | 197.9 | 6.005 | 488.1 | 10.3 | 19911.9 | 6.5 |
| Oxalis drained swamp | 489.7 | 448.3 | 517.3 | 487.7 | 506.7 | 499.7 | 491.6 | 14.914 | 759.6 | 16.1 | 44217.1 | 14.5 |
| Aegopodium | 7.769 | 6.710 | 6.730 | 5.983 | 5.995 | 6.990 | 6.7 | 0.203 | 21.2 | 0.4 | 1866.7 | 0.6 |
| Hepatica | 2.982 | 2.982 | 2.982 | 2.982 | 2.982 | 2.982 | 3.0 | 0.090 | 21.2 | 0.4 | 414.6 | 0.1 |
| Cladonia | 0.280 | 0.000 | 0.222 | 0.000 | 0.000 | 0.000 | 0.1 | 0.003 | 0.1 | 0.0 | 21.9 | 0.0 |
| Total | 3296.0 | 100.0 | 4721.2 | 100.0 | 305268.8 | 100.0 | ||||||
Land categories of the FFP area over the period of 2015–2020 at a height of 70 m_
| Land type | Species | Area (ha) | Increment (m3/ha/y) | Growing stock (m3) | % of FFP |
|---|---|---|---|---|---|
| Forest | Alnus incana | 37.2 | 186.9 | 3251.9 | 1.1 |
| Forest | Alnus glutinosa | 464.5 | 1693.0 | 76381.2 | 14.1 |
| Forest | Populus tremula | 242.7 | 786.6 | 20652.5 | 7.4 |
| Forest | Betula spp. | 1007.9 | 3449.5 | 224027.0 | 30.6 |
| Forest | Picea abies | 450.0 | 2205.8 | 135347.7 | 13.7 |
| Forest | Pinus sylvestris | 470.5 | 1027.0 | 145716.4 | 14.3 |
| Forest | Other species | 0.1 | 0.1 | 58.0 | 0.0 |
| Forest (bog) | Pinus sylvestris | 40.7 | 52.5 | 1004.7 | 1.2 |
| Forest | Clear-cut | 183.6 | 5.6 | ||
| Bog | Without forest | 35.5 | 1.1 | ||
| Fen | Without forest | 9.8 | 0.3 | ||
| Agricultural land | - | 120.4 | 3.7 | ||
| Clear area | - | 83.8 | 2.5 | ||
| Buildings | - | 2.3 | 0.1 | ||
| Standing water | - | 3.8 | 0.1 | ||
| Isle in the forest | - | 30.4 | 0.9 | ||
| Roads | - | 37.1 | 1.1 | ||
| Watercourse | - | 40.1 | 1.2 | ||
| Yard | - | 11.8 | 0.4 | ||
| Other land | - | 0.3 | 0.0 | ||
| Power lines | - | 23.5 | 0.7 | ||
| Total forest land | - | 2897.3 | 87.9 | ||
| Total area | - | 3296.0 | 100.0 | ||