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首页> 外文期刊>South-East European Forestry >New Silvicultural Treatments for Conifer Peri-Urban Forests Having Broadleaves in the Understory - The First Application in the Peri-Urban of Xanthi in Northeastern Greece
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New Silvicultural Treatments for Conifer Peri-Urban Forests Having Broadleaves in the Understory - The First Application in the Peri-Urban of Xanthi in Northeastern Greece

机译：地下有阔叶树的针叶林近郊森林的新造林方法-在希腊东北部克桑西的近郊首次应用

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Background and Purpose: In Greece, forest practice did not develop special silvicultural treatments for planted conifer peri-urban forests where broadleaf trees appear as natural regeneration in the understory. The aims of this study are: a) to analyze the new proposed selective silvicultural treatments for the planted peri-urban forest of Xanthi and for analogous planted conifer forests, where broadleaf trees are naturally established in the understory b) to check the research hypothesis that the new selective silvicultural treatments exhibited higher intensity in terms of the basal area of cut trees, compared to that of traditional treatments in the studied peri-urban forest. Materials and Methods: In the traditional treatments, in the pine overstory cuttings, apart from the dead trees, mainly the malformed, damaged, suppressed and intermediate trees were cut. In the lower stories, the goal of the thinning was the more or less uniform distribution of broadleaf trees. In the proposed selective treatments, the main aim of pine cuttings is to release the broadleaf formations growing in the lower stories, while the treatments of the broadleaf trees will be a form of “positive selection” thinning. Plots were established in areas where the two types of treatments were going to be applied. In each plot, tree measurements and a classification of living trees into crown classes took place. After the application of the treatments the characteristics of cut trees were recorded. Results: In the established plots, before the cuttings (and thinning), total basal area was not statistically significantly different between the two types of treatments. In selective treatments, the basal area of all cut trees was statistically significantly higher than that of the results of traditional treatments. In the broadleaf cut trees there were statistical differences in the ratios of dominant, intermediate and suppressed trees between the two silvicultural approaches. Conclusions: The research hypothesis was verified. The intensity of treatments in terms of the basal area of cut trees was higher in the selective approach, compared to the traditional treatments in the Xanthi peri-urban forest. However, the overstory cutting intensity of the selective treatments depends on the spatial distributions and densities of broadleaved and conifer trees. In the broadleaf trees, the different objectives of the two types of treatments resulted in thinning with different qualitative characteristics. The proposed silvicultural treatments will accelerate the conversion of peri-urban conifer forests having an understory of broadleaf trees into broadleaved forests, or into mixed forests of conifers and broadleaf trees.
机译：背景和目的：在希腊，森林实践并未为针叶树近郊的人工林开发特殊的造林方法，在这些森林中，阔叶树在地下被自然再生。这项研究的目的是：a）分析新提议的针对克桑西人工林和类似的针叶林的选择性造林方法，其中在阔叶林中自然建立了阔叶树b）检查研究假设与研究的近郊森林中的传统处理相比，新的选择性造林处理方法在砍伐树木的基础面积上表现出更高的强度。材料和方法：在传统的处理方法中，在松树上的cutting插中，除枯死的树木外，主要砍伐畸形，损坏，压抑和中间的树木。在较低的故事中，间伐的目的是使阔叶树或多或少均匀分布。在提议的选择性处理中，松枝的主要目的是释放下层生长的阔叶地层，而阔叶树的处理将是“正选择”间伐的一种形式。在将要使用两种治疗方法的区域中建立了图。在每个样地中，都进行了树木测量并将活树分类为树冠等级。应用处理后，记录砍伐树木的特征。结果：在已建立的样地中，在cutting插（和疏伐）之前，两种处理之间的总基面积没有统计学显着差异。在选择性处理中，所有砍伐树木的基础面积在统计学上均显着高于传统处理结果。在这两种造林方式之间，阔叶砍伐树木的优势树，中间树和抑制树的比率存在统计学差异。结论：研究假设得到了验证。与在克桑西近郊森林中的传统处理方法相比，选择性方法中以砍伐树木的基础面积计算的处理强度更高。然而，选择性处理的过度伐伐强度取决于阔叶树和针叶树的空间分布和密度。在阔叶树中，两种处理方法的目标不同，导致变薄且具有不同的定性特征。拟议的造林措施将加速将阔叶林下层的近郊针叶林转变为阔叶林，或转变为针叶树和阔叶树的混交林。

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