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Naturalregeneration

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  • 1. Natural Regeneration after storm « Martin » in 1999 By Anne HAUKKOVAARA Jonna RITALA Raquel LOZANO Anaïs CORREIA Stéphane BAROT Vincent BERNARD Audrey SUDRIE Sébastien MARSAN Joël AMAXOPOULOS Baudouin MARLAND
  • 2. Storm
    • Formation
      • Big rainfall with electricity.
    • Damage
      • Population
      • Fire
      • Flora
      • Fauna
  • 3. Problematic : natural regeneration is a solution for to reconstitute a timber stand after the storm ?
      • Summary
      • 1)Different techniques
      • 1.1 in Spain
      • 1.2 in Finland
      • 1.3 in France
    • 2) Practical cases
    • 3) Positive and negative points of different techniques
  • 4. Regeneration Artificial Natural
  • 5. Pinus pinaster in Europe and North Africa
    • Spain research
  • 6. Pinus sylvestris in Europe and Asia Finland research
  • 7. Mr. Beau’s regeneration methods
      • Natural regeneration appears as a supprise.
      • Competition with Molinie.
      • 4000 saplings per hectare.
      • First uncommercial thinning .
      • More natural.
  • 8. Mr. Hazera’s regeneration methods
      • Good quality with long circle and high density.
      • Opportunity because in a densive stand the smallest and the weakest trees die.
  • 9. • Study of Mr. RICAUD’s plot
    • There are phytosanitary problems.
    • Heterogeneousness diameters
    • The age varies from 10 to 15 years everywhere in the stand.
  • 10. Strengths
    • Good method in drained wet lands
    • Less expensive than planting.
    • High density of the young advantage against damages and lend more opportunity to choose cutting.
    • Dead trees are common in all stands.
    • Naturally regenerated sites have more biodiversity with less treatment.
    • During the growing only the healthiest trees survive with better root system.
  • 11. Threats
      • Lobbing for the plantations and against the natural regeneration by the industry.
      • Financial support of the government focuses on the intensive silviculture.
      • The fire will proceed fast in the naturally regenerated forest than in the plantations.
      • Longer forest cycle with more time to regeneration.
      • Natural regeneration appear in good soils or in prepare areas.