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Understanding 3D structural complexity of individual Scots pine trees with different management history

机译：了解各个苏格兰松树的3D结构复杂性与不同的管理历史

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摘要

Tree functional traits together with processes such as forest regeneration, growth, and mortality affect forest and tree structure. Forest management inherently impacts these processes. Moreover, forest structure, biodiversity, resilience, and carbon uptake can be sustained and enhanced with forest management activities. To assess structural complexity of individual trees, comprehensive and quantitative measures are needed, and they are often lacking for current forest management practices. Here, we utilized 3D information from individual Scots pine (Pinus sylvestris L.) trees obtained with terrestrial laser scanning to, first, assess effects of forest management on structural complexity of individual trees and, second, understand relationship between several tree attributes and structural complexity. We studied structural complexity of individual trees represented by a single scale‐independent metric called “box dimension.” This study aimed at identifying drivers affecting structural complexity of individual Scots pine trees in boreal forest conditions. The results showed that thinning increased structural complexity of individual Scots pine trees. Furthermore, we found a relationship between structural complexity and stem and crown size and shape as well as tree growth. Thus, it can be concluded that forest management affected structural complexity of individual Scots pine trees in managed boreal forests, and stem, crown, and growth attributes were identified as drivers of it.
机译：树功能性状与森林再生，生长和死亡率等过程影响森林和树木结构。森林管理本身影响了这些过程。此外，森林结构，生物多样性，弹性和碳吸收可以持续和增强森林管理活动。为了评估个体树木的结构性复杂性，需要全面和定量措施，并且通常缺乏当前的森林管理实践。在这里，我们利用了从地面激光扫描获得的单个苏格兰松（Pinus Sylvestris L.）树的3D信息，首先，评估森林管理对个体树木结构复杂性的影响，第二，了解几棵树属性与结构复杂性之间的关系。我们研究了由单一规模独立的公制表示的单个树木的结构复杂性，称为“框尺寸”。本研究旨在识别影响北方森林条件中各个苏格兰松树的结构复杂性的驱动因素。结果表明，稀疏增加了个体苏格兰松树的结构复杂性。此外，我们发现了结构复杂性和茎和茎冠和形状与树冠的关系。因此，可以得出结论，森林管理层受到管理北欧森林中各个苏格兰松树的结构复杂性，以及茎，冠和生长属性被确定为它的驱动因素。

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