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Thinning effects on growth and occurrence of rotting in aspen stands

Author

Listed:
  • Alina Nasibullina

    (Institute of Silviculture and Forest Protection, Dresden University of Technology, Tharandt, Germany)

  • Marieke van der Maaten-Theunissen

    (Chair of Forest Growth and Woody Biomass Production, Dresden University of Technology,Tharandt, Germany)

  • Ernst van der Maaten

    (Chair of Forest Growth and Woody Biomass Production, Dresden University of Technology,Tharandt, Germany)

  • Holger Fischer

    (Institute of Silviculture and Forest Protection, Dresden University of Technology, Tharandt, Germany)

  • Sven Wagner

    (Institute of Silviculture and Forest Protection, Dresden University of Technology, Tharandt, Germany)

Abstract

Poplar species such as aspen (Populus tremula L.) play a very important role in the forest formation process not only in Eastern European regions. Unfortunately, such aspen stands are often severely affected by fungal diseases, causing mainly core rot. In this study, the indirect effects of thinning on the phytosanitary condition of aspen by promotion of tree growth were investigated. Two thinning methods, manual (thinning from below) and mechanical thinning (schematic), were applied to young stands dominated by Eurasian aspen to study their effects on tree growth and health. All trees were measured at breast height and diameter frequency distribution was determined twice, i.e. three and 24 years after the beginning of the experiment. In addition, during the second measurement, tree-ring samples were obtained from individual trees to evaluate growth and wood decay damage. Neither manual nor mechanical thinning of aspen significantly increased its growth at the stand level, but positive effects on individual trees were observed in plots where mechanical thinning was applied. The thicker the trees, the less decayed they were. The analysis suggests that thinning in general should not be used to increase stand production, but the positive effects of mechanical thinning on individual aspens can be recommended to promote the growth of individual vigorous trees.

Suggested Citation

  • Alina Nasibullina & Marieke van der Maaten-Theunissen & Ernst van der Maaten & Holger Fischer & Sven Wagner, 2023. "Thinning effects on growth and occurrence of rotting in aspen stands," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 69(12), pages 525-538.
  • Handle: RePEc:caa:jnljfs:v:69:y:2023:i:12:id:103-2023-jfs
    DOI: 10.17221/103/2023-JFS
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