Hostnik presentation e mo-nfur ljubljana 2012

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Hostnik presentation e mo-nfur ljubljana 2012

  1. 1. The 6 cities’ forestsThe comparative analysis of urban forests’potentials of six largest cities in SloveniaRobert HOSTNIKSlovenia Forest ServiceEMoNFUr LIFE+ project workshop, Ljubljana, May 15 th, 2012
  2. 2. Landscape Diversity
  3. 3. Forest Cover58,5 % of total area
  4. 4. Urban Forest Areas
  5. 5. Urban Forest Areas Maribor Velenje Kranj Celje Ljubljana Novo mesto
  6. 6. Comparitive analysis• Urban forests of 6 selected cities• Urban forests vs. forests on local and regional level URBAN ~ 400 ha of forest area PERI-URBAN ~ 1.600 ha of forest area LOCAL ~ 8.100 ha of forest area REGIONAL ~ 89.000 ha of forest area• Data of regular forestry inventory• Forest stand as basic unit
  7. 7. Research topics• Urban forest cover• Urban forest ecosystems Naturalness Structure of development phases Tree species diversity Growing stock and structure Stand’s potentials• Urban forest functions 10 social functions 4 environmental functions 3 productive functions• Ownership structure characteristics of private forests• Legal aspects
  8. 8. Defining research area CORINE Land Cover (CLC 2006) Urban level • min. 90 % of densely populated area • inclusion of traditional urban forests Peri-urban level • 2 kilometres circle around urban area (1/2 hour walking distance)
  9. 9. Forest Cover
  10. 10. Forest cover (in %) Country’s average 58,5% 58 % 25 % Ljubljana 22 % 15 % 42 % 42 % Maribor 24 % 14 % 49 % 43 % Celje 29 % 13 % 67 % 49 % Kranj 29 % 10 % 71 % 49 % Velenje 42 % 31 % 63 % 49 %Novo mesto 42 % 15 % Urban level Peri-urban level Local level Regional level
  11. 11. Naturalness
  12. 12. Naturalness– the comparison between current and potentially natural tree species composition on particular forest site.4 categories:• Preserved forests (70%+ site original tree species)• Changed forests (30 – 69%)• Strongly changed forests (10 – 29%)• Altered forests (less than 10 %)
  13. 13. Share of preserved forest stands (in %) Urban level Peri-urban level Local level Regional level%9080 82 79 77 7570 70 6660 63 57 55 545040 43 35 3530 33 29 28 24 2520 21 18 19 16 1510 6 0 Ljubljana Maribor Celje Kranj Velenje Novo mesto
  14. 14. Forest Development Phases
  15. 15. Share of older forest development phases (in %) Urban level Peri-urban level Local level Regional level%90 89 89 86 8380 78 74 7670 72 72 71 72 71 70 68 66 6460 61 62 62 5750 51 51 5240 43302010 0 Ljubljana Maribor Celje Kranj Velenje Novo mesto
  16. 16. Growing Stock
  17. 17. Growing stock (in m3/ha) Urban level Peri-urban level Local levelm3 /ha 400 399 369 350 379 323 300 304 303 314 Country’s 286 average 266 269 281 288 265 276 250 283 256 290 273 278 m3/ha 200 150 100 50 0 Ljubljana Maribor Celje Kranj Velenje Novo mesto
  18. 18. Big Trees
  19. 19. Share of trees with diameter over 50 cm (in % of growing stock) Urban level Peri-urban level Local level%25 23 22 2120 20 20 19 18 18 17 17 1615 15 15 14 13 1210 9 10 5 0 Ljubljana Maribor Celje Kranj Velenje Novo mesto
  20. 20. Tree Species Diversity
  21. 21. Number of tree species in urbanforests All Minority tree species Introduced tree species 38 37 3634 30 29 18 16 15 14 14 10 5 5 4 4 3 2Ljubljana Maribor Celje Kranj Velenje Novo mesto
  22. 22. Recreation
  23. 23. Share of forest areas with recreational function (in %) Urban level Peri-urban level Local level Regional level%100 98 95 90 94 90 89 85 80 70 72 68 67 64 60 59 50 40 37 30 33 31 29 24 23 24 20 15 10 11 13 10 9 6 0 Ljubljana Maribor Celje Kranj Velenje Novo mesto
  24. 24. Wood Production
  25. 25. Share of forests with important wood production function (in %) Urban level Peri-urban level Local level Regional level%100 99 99 98 96 98 99 98 96 93 94 90 84 83 80 70 67 60 57 50 40 30 20 10 0 0 0 0 0 0 0 0 5 4 0 Ljubljana Maribor Celje Kranj Velenje Novo mesto
  26. 26. Ownership
  27. 27. Share of public forests (in %) Urban level Peri-urban level Local level Regional level%60 5450 4740 41 37 3530 30 26 24 2520 18 18 16 16 16 1310 12 12 12 11 12 10 8 3 3 0 Ljubljana Maribor Celje Kranj Velenje Novo mesto
  28. 28. ConclusionsUrban forests vs. forests on local & regional level Differences: - forest cover - forest functions - ownership - legal aspects Similarities: - forest ecosystems’ characteristics Differences betwen cities.
  29. 29. Thank you for your attention.robert.hostnik@zgs.gov.si
  30. 30. The 6 cities’ forestsThe comparative analysis of urban forests’potentials of six largest cities in SloveniaRobert HOSTNIKSlovenia Forest ServiceEMoNFUr LIFE+ project workshop, Ljubljana, May 15 th, 2012

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