Belarusian Polish Forest Mapping Belarusian Polish Forest Mapping

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Table 3.5. Distribution of BIFs according to criteria in different land user categories in Belarus BIF criteria Local Authorities Ministry of Forestry Ministry of Defence Ministry of Education Ministry for Emergency Situations National Academy of Science Presidential Administration of Republic of Belarus ha % ha % ha % ha % ha % ha % ha % ha % 1. Little or no signs of human influence - - 50,938.2 6.6 - - - - 44,144.3 75.8 - - 86,897.4 49.6 181,979.9 17.4 2. Average age of stand more than X years 3. Considerable amount / long continuum of dead wood of different types, rich flora of wood rotting fungi. 1б299.2 34.0 87,143.4 11.3 5,071.4 16.6 436.8 12.9 283.8 0.5 2903.9 37.5 67,512.1 38.5 164,650.6 15.7 247.5 6.5 22,886.1 3.0 55.8 0.2 276.6 8.2 1,085.2 1.9 702.1 9.1 16,865.9 9.6 42,119.2 4.0 5. Forests on steep (more than 30°) slopes. 35.9 0.9 317.4 - - - - - - - - - - - 353.3 - 6.1. Five or more species in main layer and at least 55 years old (excluding 1,847.4 48.4 289,822.6 37.7 2,908.1 9.5 931.9 27.5 2,856.2 4.9 3386.5 43.7 30,719.6 17.5 332,472.3 31.7 understory); 6.2. Age of trees varies more than 30 years and average age is more than 80 472.5 12.4 45,512.9 5.9 1,033.0 3.4 200.4 5.9 495.9 0.9 1868.8 24.1 27,422.9 15.6 77,006.4 7.3 years; 6.3. Presence of trees 20 years older than in the table (cr. 2) 984.3 25.8 105,308.4 13.7 2,171.0 7.1 588.0 17.4 1,328.3 2.3 2431.1 31.4 58,455.3 33.4 171,266.4 16.3 7. Forests after large-scale natural disturbance (fire, storm, beaver, bark 11.9 0.3 2,797.3 0.4 1,051.8 3.4 - - 356.9 0.6 - - 861.1 0.5 5,079.0 0.5 beetle) and left for natural regeneration. 8. Endangered vegetation types 67.4 1.8 180,069.4 23.4 19,350.0 63.3 789.3 23.3 17,102.9 29.4 613.1 7.9 40,197.3 22.9 258,189.4 24.6 9. Populations of several endangered forest dependent species of plants and - - 28,965.1 3.8 349.3 1.1 13.6 0.4 - - - - 6,230.7 3.6 35,558.7 3.4 animals. 10. Rare broad-leaved species present in canopy layer (Norway maple, smallleaved 395.9 10.4 63,249.7 8.2 239.5 0.8 58.2 1.7 352.6 0.6 473.3 6.1 3,679.3 2.1 68,448.5 6.5 lime, elms). 11. Small water courses; surface springs, flooded areas; partly already included 2.0 0.1 156,155.7 20.3 3,184.9 10.4 764.7 22.6 - - 1549.3 20.0 5,529.2 3.2 167,185.8 16.0 above. Total 3,818.5 100.0 768,855.6 100.0 30547.9 100.0 3,386.4 100.0 58,227.7 100.0 7750.3 100.0 175,268.8 100.0 1,047,855.2 100.0 Total
Belarusian-Polish Forest Mapping project The biggest share of Forests after large-scale natural disturbance is located on the lands of The Ministry of Defense. Post-fire succession forests have developed in the areas used for military training. On peat soils, such forests are left for natural regeneration, but in other places they are usually re-planted. As much as 63% of such forests have also been qualified as Endangered Very few sites were selected as Habitat of endangered forest species, as the creation of such a database for Belarus has only started. This project used information partly filtered from the forestry database, and partly obtained from the results of other projects. Only a small part of Belarusian territory has rich forest soil, where earlier forests were intensively logged. Due to this, less than 1% of Belarusian forests contain rare broadleaved species (maple, lime, elms). At present logging of these species is forbidden, so there is a chance that their presence in stands will with increase with time. Riparian forests as well as all riverside belt forests were selected by the criterion Small water courses. These forests play an important role in water and riverbank protection and are noted everywhere in Belarus during forest inventories, except for National Parks and reserves, who have anyway stricter protection regimes. Most of the forests that match this BIF criterion were of the mesotrophic humid and wet and bog forest types. Approximately 75% of BIFs satisfy only one criterion. Two criteria are fulfilled by 19% of BIFs, 5% of BIFs satisfy three criteria, and only 1% satisfies from four to six criteria. (Fig. 3.6). Oligotrophic dry pine Oligotrophic slightly wet pine Oligotrophic moist pine Oligotrophic wet & bog pine Oligo-Mesotrophic slightly wet conifers Oligo-Mesotrophic slightly wet deciduous Oligo-Mesotrophic moist conifers Oligo-Mesotrophic moist deciduous Oligo-Mesotrophic wet & bog conifers Oligo-Mesotrophic wet & bog deciduous Mesotrophic slightly wet conifers Mesotrophic slightly wet deciduous Mesotrophic moist conifers Mesotrophic moist deciduous Mesotrophic wet & bog conifers Mesotrophic wet & bog deciduous Eutrophic slightly wet conifers Eutrophic slightly wet deciduous Eutrophic moist conifers Eutrophic moist deciduous Temporary flooded riparian forest 0% 20% 40% 60% 80% 100% 1 criterion 2 criteria 3 criteria 4 or more criteria Fig.3.6. Share of BIFs that meet one or more criteria within individual forest types in Belarus Oligo-Mesotrophic wet and bog conifer forests turned out to have the highest conservation value, with 22% of forests selected according to four criteria, and another 21% by three criteria. These forests cover only about 1500 hectares, most of them being “island” spruce forests in Polessie which are relics of the Holocene period. Most of them satisfy the Average age of stand more than X years, Endangered vegetation types, and Uneven age/canopy structure criteria. Over 50% of temporary flooded riparian forests and about 40 % oligotrophic wet and bog pine and mesotrophic wet and bog conifers satisfied two criteria. Oligotrophic and oligo-mesotrophic forests on dry soil have easy access and are intensively utilized. This is probably why 80-90 % of BIFs were filtered by one criterion only. 27
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