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首页> 外文期刊>Annals of Forest Science >Number and height of unbrowsed saplings are more appropriate than the proportion of browsed saplings for predicting silvicultural regeneration success
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Number and height of unbrowsed saplings are more appropriate than the proportion of browsed saplings for predicting silvicultural regeneration success

机译：张开的树苗的数量和高度比浏览树苗的比例更合适，以预测造林再生成功

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摘要

center dot Key message The browsing level of oak (Quercus petraea and Quercus robur) and fir (Abies alba) provided only a rough estimate of the expected regeneration success. Thus, it cannot be recommended as a standard measurement to predict forest development, unless the number of saplings and the height of those saplings are considered. center dot Context Browsing by large herbivores may affect regeneration success and forest development, with an impact that lasts for decades. center dot Aims Whether the browsing level of a tree species can be used in forestry as a standard measure to assess whether the target values (for instance regeneration success) of highly selected tree species, such as oak (Quercus petraea (Mattuschka) Liebl., Quercus robur (L.)) and fir (Abies alba (Mill.)), will be reached is unclear and need specification. center dot Methods In this study, 985 sampling plots (10 m(2)) in Southern Germany (Baden-Wurttemberg) containing browsed and unbrowsed oak and fir-saplings were analysed. Both the browsing level and a measure of the expected regeneration success that considered not only the sapling density but also different height classes (<= 20 cm; 21-50 cm; 51-130 cm) were calculated. center dot Results The use of the browsing level as a proxy for the expected regeneration success was statistically only partly justified. For fir the relationship between browsing level and expected regeneration success became even weaker for a new indicator variable which considers two height classes rather than one class for saplings exceeding 50 cm (51-80 cm and 81-130 cm). center dot Conclusion According to these results, the browsing level cannot be recommended as a standard measurement and/or predictor of damage, unless the number of saplings and the height of those saplings are considered. Thus, in efforts to mitigate conflicts between foresters and hunters, a measurement is needed that addresses the successful establishment of a sufficient number of trees despite browsing, rather than the browsing of trees alone.
机译：None

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  • 来源
    《Annals of Forest Science》 |2021年第1期|共10页
  • 作者

    Hagen Robert; Kuehl Norbert; Hanewinkel Marc; Suchant Rudi;

  • 作者单位

    Leibniz Inst Zoo &

    Wildlife Res Alfred Kowalke Str 17 D-10315 Berlin Germany;

    Univ Freiburg Chair Silviculture Tennenbacherstr 4 D-79106 Freiburg Germany;

    Univ Freiburg Forestry Econ &

    Planning Tennenbacherstr 4 D-79106 Freiburg Germany;

    Forest Res Inst Baden Wurttemberg Wonnhaldestr 4 D-79100 Freiburg Germany;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 林业;
  • 关键词

    Oak; Fir; Roe deer; Damage;

    机译：橡木;冷杉;狍子;损坏;

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