Prezentace aplikace PowerPoint

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Close to nature management in forests with
prevailing ecological and social functions
Dr. Martin Moravcík at al.
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Target of contribution

• To present proposal of procedures of forest
  management planning aimed at close to nature
  management in forests with prevailing ecological
  and social functions on the example of
  mountain forests in Norway spruce vegetation
  zone (SVZ)

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Starting points for proposal of procedures of
forest management planning in SVZ

• Forests fulfil their ecological and also social
  functions the best in such status that is
  responding to the status of primeval forests -
  untouched by man.
• Targets of management should be aimed at
  conser-vation of permanent existence of forest,
  with suitable spatial, age and tree species
  structure, preserved self-regulating abilities
  and good health conditions.
• For enforcement of these targets is needed to
  improve procedures of forest management planning,
  mainly management models and detailed planning
  including determination of need and urgency of
  measures so that they meet the requirements of
  close to nature forestry.

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Specification of the tasks

• To secure collection, processing and evaluation
  of empirical material with the aim to acquire new
  knowledge on functionally desirable status of the
  forests of SVZ.
• To derive management models on the basis of the
  processed empirical material and literary
  sources.
• To complete into the system of forest management
  planning indicators suitable for detection,
  monitoring and evaluation of the status and
  development of forests with strong differentiated
  stand structure (indicators of height and
  diameter variability, slenderness coefficient,
  crown length etc.)
• To propose objective procedure for determination
  of need and urgency of measures (especially in
  dependence on naturalness class).

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Empirical material for realization of specified
tasks was obtained mainly from 122 circle
research plots with size from 2 to 10 are so
that there were at least 25 trees on each
research plot. Status of the forest ecosystems on
the research plots was complexly analysed
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Frequency and distribution of the empirical
material
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Outlook target stand structure
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Man-made forests in SVZ
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Available target stand structure
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Basic decisions
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Need and uregeny of the measures (interventions)
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Criteria for evaluation of the naturalness class
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Table for determination of the degree of
diameter dispersion
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Determination of the share of canopy levels ()

• Canopy levels are specified by distribution of
  stand profile from terrene to upper height in
  thirds
• Each tree on the research (sample) plot is
  involved into that level which interferes with
  its top

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Evaluation of static stability
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Evaluation of the health conditions

• Damage by injurious agents and defoliation (loss
  of foliage) are evaluated.
• By their combination is evaluated health
  condition as follows
• Excellent
• Slightly declined
• Mediumly declined
• Strongly declined
• Caduceus or died forest

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Evaluation of status of the natural regeneration

• According to existing spatial and age stand
  structure are compared both actual status and
  desired status of natural regeneration (NR) as
  follows
• Fully corresponding NR (91 100 )
• Sufficient NR (61 90 )
• Medium NR (41 60 )
• Slight NR (11 40 )
• Minimal NR (to 10 )