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Doubling wood harvest with tree group planting

Doubling wood harvest with tree group planting. Rem Khlebopros Andrei Zinovyev. M. T 3 > T 2 > T 1. T 3. T 2. T 1. N 0. N. Forest trajectory on NxM plane. Total biomass. Number of trees. Von Hahn’s experiments. Graphs of growth parameters for group planting (triangles)

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Doubling wood harvest with tree group planting

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  1. Doubling wood harvest with tree group planting Rem Khlebopros Andrei Zinovyev

  2. M T3 > T2 > T1 T3 T2 T1 N0 N Forest trajectory on NxM plane Total biomass Number of trees

  3. Von Hahn’s experiments Graphs of growth parameters for group planting (triangles) and for natural pine first-class forest (squares).

  4. “Forest Hahn” Model • Simple (somewhere naive) • Qualitative • Deterministic • “Geometric”

  5. C HC H D Individual tree growth H – tree height; D – tree diameter; HC, C – crown height and diameter respectively. Dt+1 = Dt + keDt/th

  6. S1 S2 S Trees competition discriminative relation degree of competition

  7. Factor 1. Horizontal crown moving NC(i)- the number of competitors

  8. A A Factor 2.Vertical crown moving free crowded

  9. RIP Factor 3.Depression and mortality 

  10. ay ax Experiments Variants of tree planting: Poisson (random), equidistant, in groups

  11. Random planting

  12. Group planting

  13. Phase portraits random group

  14. Mortality

  15. Diameters and masses

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